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VOL" xT, PART if. (NATURAL HiIsTORyY,. &C) (Nos. I to 1V.—1903.) EDITED BY THE NaTuRaL fiisToRY SECRETARY, oe ee Tt will flourish, if naturalists, chemists, antiquaries, philologers, and men of science in different parts of Asia, will commit their observations to writing, and send them to the Asiatic Society of Calcutta. It will languish, if such communications shall be long intermitted; and it will die away, if they shall entirely cease.’ SiR WM. JONEs. cS eo Ol ee CALCUTTA : es ha PRINTED AT THE BAPTIST MISSION PRESS, AND PUBLISHED BY THE ASIATIC SOCIETY, 57, PARK STREET. 1904. a DY Se ae Ti 7. L ' } ue / 4 ' . 4 4 A I : “ : ietismat. ise Wis Aer eo Fee, MAE os aie. Hifi, et - ie 2 “Seat a ee MR Pte Lai ae AT ; } ‘ . ere Dates of Issue. Part II, 1908. No. I.—Containing pp. 1-10, was issuedon 4th May, 1903. » i1—Containing pp. 11-60, was issued on 17th June, 1903. III.—Containing pp. 61-110, and Plates IVI, was issued on 12th September, 1903. IV.—Containing pp. 111-257, was issued on. 6th February, 1904, LP) _ / -( . - San ) j | ) B92" Bets | avadl Lam so Al ee i Bee 9, | GORE peu, ih oo banewi ape, Jf=5- eee os - Cas S08f f eunl ui mod doses esi GO-LE tH abicldmD== 309 a Ae “BSE ua Bop a MC; iy =~. aotalt & Bia. Ai es icy saan TE Ramey. | AUST prigaed ad i0dso banaad any, Seu apgapinhonct— a 575 ds os . ’ -— 2 . < - es FP TRY EPP ES tl, CPS a ES LIST OF CONTRIBUTORS. Game, J. Syxes ;—See Kino, Sir Georce and (FAMBLE, J. SYKES, Hooper, Davin ; Silajtt: an Ancient Hastern Medicine... ...veo.sseve ——-———- ; The occurrence of Melanterite in Baluchistan...... Kine, Sir George and Gamsie, J. Sykes ;—Materials for a Flora erre Malayan Peninsula. No. L4.ci, csisnses.n0n00 sen vesneauen acs Littiy, C.;—Himalayan summer storms and their influence on mon- moon ramsal. ti Northern InGt@ . vrssecenactsasaneievssaeues sce sebene ean — On two remarkable rain-bursts in Bengal; and some of the more prominent features of the monsoon in Northern India TN OO 2) ag eras tees aertaeastiaas eaeind Sts schiee ps -Ieiaaiswessaasi «sais seneen Prat, H. W. ;—Contributions rere a Moncjraph of ie Oriental Aleurodidx. Part I.. dpataeke Sean cea syuein dennis. -;—The Funelion o the v dato 0: aiee of oe Aisi. dide.. Tee saa : ee saat arsapainine —- ihe 7 Chaar Fe ‘5 cna et spear as ee on Birds.. b Sate Sia tb rae oe Se Bie Wins bc San wae panlante stay Prain, D.;—Novicisze aioe XX. ‘Bame Additional Scrophularines, Ray, P. C.;—A study on the Constitution of Dimercurammonium salts. — ;—Dimercurammonium Nitrate........004 sobs sate aa Sresaina, H. P.;—A first note on the Life- eee of Ohemnts abietis aes Steb. MS... SUaieP alge seeder ceive sheen cot amplositsmrelaes ; A note on the diacoeer of Dinas Sp. prox. a ae in the N.-W. Himalayas with some remarks on tts life- ia 2 assis sieteiafulsisuis oe vezie'n/alvis sBelonciewe een ees Oe the iequicilion " alas ape aeres 3 the Gone ke of iterates abietis picese ALS. in the N.-W. Himalayas......... - ; On the life-history of Arbela tetraonis, Moore, a destruc- tive Insect-pest in Casuarina Plantations tn Madras.....o.scseoees Watton, H. J.— ; Notes on the occurrence of Motacilla taivana Mowimoe) Near CalCutid \icssiaivsestveasien nce uss seeaonone.*setea séesnp Page 98 236 111 239 57 252 9 [ © ie 750 peas = es Rey tae A 7 t iS s >. 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BOE oa ees AS) COC ROw OF MORES Ss PEREEM isin SRS eee peed noes oti ees F ; - : u es ) Ae . j "; ne ae vat ai STOEL pay ye Ss sf} ah yD a ane ae oH BE S oi a - ‘ 2 oe - meer. ENG o.-«h eae WORD TRuAeet.. VE eee ae ooh ‘ASB dliakes etl - Bs | ; : 43 % ef a: GL. auntaaby i goM MR EI? Ao pimle teste ah ix ag ; ‘ sary - gi Sow h> te SMO: Fi Types ' : ; acede cen aseume ne ‘i ; : a el soayind Bisa spond SSeS oy sav ipa ak ph. Be at rhe gl “0 Ee ese tae een Soonen eealinn ane ak ‘nek 5a NN ely? Pal ok "mad ‘ * + va as C ; ‘ . 4 a - . : ~ 3 = x: a ¥ > ie ind 1 ‘ a « ong Pp = ’ * 4 is al y ; ros id “ty , i> see ae os JOURNAL OF THE ASIATIC SOCIETY OF BENGAL, —sehe— Vol. LXXII. Part Il.—NATURAL SCIENCE. No. 1.—1908. A Study on the Constitution of Dimercurammonium Salts.—By &. C. Rhy, D.Sc. [Read 3rd December 1902. ] A solution of mercuric chloride with ammonia yields what is com- monly known as the infusible white precipitate for which two different formule have been proposed from time to time, according as it is regarded as the amido-derivative of the sublimate: NH,-HgCl or as the mono- substitution product of sal-ammoniac: Hg. NH, Cl. Rammelsberg and Pesci even go a step further ; they propose to double the formula of the compound and look upon it as a double salt of ammonium chloride and di-mercurammonium chloride: NH,C1+ NHg,Cl. Hofmann and Marburg, who have recently repeated the experiments of Rammelsberg and Pesci, have come to the conclusion that through the researches of the last named chemists the formule of the mercurammonium compounds have been unnecessarily complicated, and they further main- tain that the infusible white precipitate may be regarded as amido mer- curic chloride, and as the salts of Millon’s base contain “water of con- stitution,” they should be looked upon as oxyidmercurammonium salts of the type OHg,—= NH,X.1 1 Zur Kenntniss der Stickstoffquecksilber-verbindungen Annalen: Bd. 305, p. 191. A eg a | 2 P. C. Ray—Constitution of Dimercurammonium Salts, [No. 1, It is somewhat surprising that Hofmann and Marburg should have overlooked the valuable contributions of André, which throw considerable light on the constitution of the compounds in question. The French chemist has carefully studied the interaction of corrosive sublimate and ammonia under varying conditions and degrees of dilution,! and finds, moreover, that a solution of the sublimate and ammonium chloride when treated with potash (l.c.p. 1110) yields a compound which may be viewed as made up of equal molecules of dimercurammonium and dimer- curoxy ammonium chlorides: NHg,Cl+NH,OHg¢g,Cl. It should be noted, however, that this rather complex formula admits of being simplified as 2NHg,Cl+ H,0. Judging from analogy, I was naturally led to expect that mercuric nitrite solution with ammonia. would yield a compound of the formula NH,-Hg-NO,. The expectation was in a way realised, only in place of the mono-, a di-substitution product was invariably obtained, viz., N.Hg. Hg.NO, or dimercurammonium nitrite with a semi-molecule of water. When this nitrite is treated with hydrochloric acid and gently warmed, it dissolves to a clear solution, evolving nitrous fumes, On evaporation a crystalline double chloride of the formula 2 HgCl,.+ NH,Cl is obtained ; hydrobromic acid also yields a compound of analogous constitution. The aqueous solutions of these double salts again, when treated with an excess of alkali, throw down precipitates of the type NHg, X: where X repre- sents a halogen atom.? The haloids as obtained by me, however, seem to conform to the general formula 2 NHg,.X.H,O. The water is obstinately held by these salts—even at 160° C.; and hence this water may be regarded as “‘ water of constitution.” It may be urged that the hydrated compounds, in view of their high molecular weights, may all be taken to have one instead of a semi-molecule of water, and the percentages of mercury and nitrogen, d&c., may still fall | fairly within the range of “errors of experiment;” but the concurring testimonies of the analyses of the different compounds under the respec- tive heads speak in favour of a semi-molecule. As regards the question whether these salts should be regarded as of the type mercuroxy—or mercurammonium derivatives, my answer is in favour of the latter. On treating the double salt 2 HgBr,.NH,Br. with an alkali I have succeeded in preparing not only the hydrated bromide 2 NHg,Br.H,O, but also a salt of the formula 2 NHg,Br.HgBr, which is absolutely non-hydrated. A corresponding chloride has been described by Kane, though prepared under different conditions. [ Ann. Chem. Phys. 1 Compt. Rend. TT. 108, pp. 235, 290, 1108, 1164. ® Trans. Chem, Soc. (1902), Vol. 81, p. 644. _ 1908.] PP. C. Ray—Oonstitution of Dimercurammonium Salts. 3 (2) 72, 215.] Again, the mercuroxy-ammonium chloride, if it exists at all, when heated, decomposes into ammonia, nitrogen, water, and calomel (Kane). But both the chloride and the bromide as obtained by me de- compose according to the equation: 2 NHg,X.H,O—=N,+2 HgX + Hg, + H,O—a reaction which has been established quantitatively, as will be shown in a subsequent communication. Scarcely a trace of ammonia could be detected even by Nessler’s reagent; I thus find myself in agree- ment with Weyl’s observations, though his salt is non-hydrated. André, as has been already noted, goes halfway between Kane and Weyl and believes in the existence of two distinct compounds: NHg,Cl and OHg, = NH,Cl, often formed side by side. In the case of infusible white precipitate, as we have already seen, Kane attributes to it the formula, NH,HgCl. Rammelsberg, on the other hand, looks upon it as a ‘‘ double salt,” having the composition, NHg,Cl1+ NH,Cl. He is supported in his contention by the compound “‘dissocia- ting” into NHg,Cl and NH, Cl on treatment with H.OH, or better K.OH. A study of the decomposition of the compound under the action of heat, on the other hand, corroborates the other view of its constitution. For, if Rammelsberg’s formula be accepted, the decomposition might be ex- pected on the following lines (cf. decomposition under heat of ammonio- magnesium chloride) :— NHg,Cl NH,Cl. NHg,Cl+NH,Cl, N+Hg+HgCl+NH,Cl. But the amount of ammonium chloride was relatively insufficient, nor was there any free mercury found. The slight amount of ammonium chloride may well be due to a secondary reaction between calomel and ammonia. Here the decomposition is found rather toagree with Kane’s view of the constitution. | We thus find that both these views about the constitution of the in- fusible white precipitate are supported by experimental data, which can well be explained by having recourse to considerations of “tautomerism.” Although we know little or next to nothing about the molecular configura- tion of the so-called “double salts,” it would be interesting to note that such instances of “tautomerism” are given in inorganic chemistry. (¢f. in this respect, Hantzsch, on the tautomerism of hyponitrous acid and its salts, Annalen, Bd. 292, 340). The so-called mercuroxy-ammonium chloride, NH,( Hg.OHg )Cl, 4 P. OC. Ray—Dimercurammonium Nitrate. [No. 1, which we have regarded as NHg, C1+H,0, breaks up, according to Kane, into nitrogen, ammonia, water, mercury, and calomel. The anhydrous salt, NHg,Cl, according to Weyl, breaks up into HgCl+Hg+N. Our results with the hydrated variety conform to Weyl’s result with the anhydrous salt. It would thus appear that there is no necessity for set- ting up two distinct types of compounds, vzz., (1) mercuroxy-ammonium, and (2) dimercurammonium, for the salts supposed to belong to the former class do not yield any appreciable ammonia as they are stated, by Kane, todo. Therefore the salts regarded as mercuroxy-ammonium compounds may very reasonably be looked upon as (hydrated) dimercurammonium salts. [ef. . Trans. Chem. Soc., Vol. 81, (1902), pp. 645-46]. This conclusion is further corroborated by the corresponding bromine compound, which behaves exactly like the chloride. Buta stronger argu- ment in favour of the non-oxylic constitution of this class of compounds seems to be based upon a study of the dimercurammonium nitrate, which I have prepared according to two distinct methods (see below). Dimercurammonium Nitrate-—By P. C. Ray, D.Se. Preliminary When dimercurammonium nitrite is treated with halogen acid, nitrous fumes are evolved and a clear solution is obtained, which on concentration yields the double salt, 2 HgCl,.NH,Cl, or 2 HgBr, NH,Br, as the case may be. [Vide Journ. Chem. Soe., Trans., Vol. 8k (1902), p. 648]. The behaviour of nitric acid towards the nitrite, how- ever, affords a marked contrast, giving rise to the formation of a prac- © tically insoluble compound. Here, the nitrite molecule evidently does not undergo a complete “break-up” and the reaction seems to consist in the replacement of the radical NO, by NO,, just as silver nitrite under similar. conditions is converted into silver nitrate. For making a comparative study, the so-called mercuroxy-ammo- nium ! nitrate was also prepared and its properties studied. Preparation.—To the pale yellow dimercurammonium nitrite strong. nitric acid is added from a pipette, till the evolution of nitrous fumes ceases. After a time the clear supernatant acid liquid is decanted off and the substance dried over sulphuric acid till the weight is constant. The mother liquor on testing indicates the presence of traces of mercury, show- ing that the compound is only very slightly soluble in nitrie acid. I The nomenclature adopted is as given in the new Edition of Watts’ Dictionary of Chemistry. 1903: ] P. C. Ray—Dimercurammonium Nitrate. 5 The nitrate thus obtained is a white amorphous powder; it retains moisture, which is not driven off even when the salt is dried in the steam- oven. It approaches closely to the formula 2NHg,NO;+H,0. Analysis.—The analyses given below are of distinct preparations :— Table of Analyses. °/, Mercury °/, Nitrogen °/, Water 2NHe.NO,+H,Orequires ... 82°47 > ... 5°77 Hive) AcOC BEE iis wadesn 4) Oe Pear yr SU sexe I 1t-o92 | (140 ae {en sea . 592 SAS” iseues NHg,NO; requires... ra OU” "sedeenk OOO Behaviour.—Wbhen heated in a bulb tube the salt decomposes, with- out fusion, with a sudden puff, giving off nitrous fumes, mercury, and water, and leaving a reddish yellow residue, consisting mainly of mer- curic oxide. “Mercurory’-ammonium Nitrate.. Preparation.—To a moderately strong solution of mercuric nitrate containing the minimum amount of the free acid dilute ammonia solu- tion was added with constant shaking till there was a persistent smell ofammonia. A bulky, flocculent, very pale yellow precipitate was obtained, which was thrown on the filter-paper, washed and dried in the steam-oven. The filtrate, though smelling distinctly of ammonia, gave on testing indications of the presence of notable quantities of mercury. Analysis.—Prep. I. In this, the preparation was washed with cold water :—Hg =83.207/,. Prep. II. In this case, the preparation was washed with hot water. Hg = 82.99 °/,(a), 83.03 °/,(b) ; N=5.6 °/.. Prep. III. The dry substance was digested with nitric acid, the acid decanted off, and the substance dried once more as above. The colour was found to change from pale yellow to perfectly white. Hg= Gao jo; N=5:9 °/,. The identity of all the above ‘onthe ibiad: as far as analysis goes, seems to be established. Behaviour.—All the above samples when heated in a bulb-tube decomposed with a sudden puff, giving off nitrous fumes, and yielding a mirror of mercury, the residue mostly of mercuric oxide. It was, how- ever, distinctly noticed that moisture was on the stem of the tube. 6 H. W. Peal—Functions of Vasiform Orifice of Aleurodide. [No. 1, Conclusion. The identity of the so-called mercuroxy-ammonium nitrate with dimercurammonium nitrate is at once apparent.! The formation of the “mercuroxy” compound in the presence of strong nitric acid would seem to favour the view already put forward, namely, that the dimercuram- monium compounds are non-oxylic in constitution. Pesci found that when the preparation was washed with hot water, the anhydrous salt, NHg,NO, was obtained. This, as will be seen, is not, however, borne out by my own experiments. l There is, however, this difference that when the compound is obtained by pre- cipitation of mercuric nitrate with ammonia, the colour is faintly yellow. The Function of the Vasiform Orifice of the Aleurodidx#.— By H. W. Puat, F.E.S. The vasiform orifice of the Alewrodide is a small oval organ always present on the posterior surface of the dorsum of both the larval and adult insects. This organ consists of three parts: The vasiform orifice, which is a more or less oval pit or depression. The operculum, which is a flat shield-like organ which covers the vasiform orifice to a greater or less extent. It is hinged on to the anterior margin of the orifice. The lingula and a narrow tube-like organ, which lies beneath, and some- times projects beyond the operculum. The lingulais usually two jointed. It is continued within the body as a transparent tube, which expands and opens into the body cavity of the insect. So far the exact function of the vasiform orifice has received little or no attention and the exact use to which it is put has up to the present been a matter of conjecture. While observers like Maskell have sur- mised that this organ is concerned in the secretion of honey dew, no one ag yet has been able to definitely state that such is really the case. Some time back, while I was examining an aleurodid which in its earlier stages is remarkably flat and transparent, I was fortunate enough to observe the lingula in motion. This organ was shot out beyond the vasiform orifice with extreme rapidity, it being protruded some four or five times a second. When the lingula was shot out the vasiform orifice moved in unison, the upper edge being bent inwards while the whole organ moved candad. The internal opening of the lingula lies directly in the. path 1903.] H.W. Peal—“ Green Bug” and other Jassids as food. 7 of the rudimentary circulatory system, and when the organ is in motion it throws the circulatory fluid into a pulsating motion for some distance within the body cavity. 1 have been unable so far to detect the actual formation of the globules of honey dew, but as soon as the lingula comes to rest after a series of protrusions a small globule may be seen just within the lower end of the lingula. This globule advances slowly, being apparently forced forward by the movement of the lingula, and after awhile reaches the tip of thatorgan. I have never observed these globules within the lingula of an adult insect, but once on examining an adult male of Aleuwrodes simula, I perceived a globule of honey dew em- erging from the lingula. There is no doubt that the function of the organ is the secretion of honey dew and the operculum may be regarded as a protective covering to this organ. ; It would appear that but little honey dew is formed by these insects compared with the majority of the coccids, aphids, or psyllids. The ‘‘ Green Bug” and other Jassids as food for Birds.— By H. W. Peat, F.E.S. In 1897, a very interesting paper by Mr. F. Finn, the Deputy Superintendent of the Indian Museum, appeared on this subject in Indian Museum Notes. Mr. Finn, however, confined his attention to the “green bug” (Nezara viridula, Linn.), which periodically at the beginning of every cold weather appears in swarms in Calcutta, Fortunately this little intruder contents itself with a merely temporary visit, as during the period of its stay it is a source of no little discomfort. This, on the other hand, is the true reason why the suggestion put forward by Mr. Finn has not up to now, at any rate to my knowledge, received the notice it really deserves. The period of its stay is far too short to make its collection profitable. : Some time back, while investigating the operations of the mango jassid (Ideocerus niveosparsus, Leitherry), it struck me that it would be an excellent addition to the “green bug” as a bird food. This jassid may in most years be found in swarms in mango topes in February, March, and April. It subsists by sucking out the juices from the young flower shoots of the mango. This insect is one of the most serious of our mango pests. Still later in June and July I found another jassid 8 H. W. Peal—“ Green Bug” and other Jassids as food. [No. 1, exceedingly plentiful in the various plots around Calcutta devoted to the cultivation of the Bhindi (Hibiscus esculentus). This insect is clothed in a uniform coat of green, is far softer than the two jassids just referred to, and would, if anything, prove an even more palatable addi- tion to the above two species as a bird food. These three species taken together would, I am sure, make it worth one’s while to take the matter up. (There are in addition several other species of jassids occurring in abundance on various plants which could also be systematically collected). It will be seen from Mr. Finn’s paper that ‘ants’ eggs’ sell from about 1s. to ls. 6d. per 1b. retail in the English market. Presumably about 4 to 6d. would be about the correct wholesale rate it could be sold at. I have no data to hand which would give one an ideaas to how much each lantern trap could be counted on to catch in a night during the season. As a matter of fact, it must be admitted that it would vary enormously with the state of the weather, the wind, and to a certain degree the type of lantern used. I have myself gathered considerably over a pound of the green fly from off an ordinary lamp in about two hours’ time. A suitable lantern trap would consume about ananna’s worth of oil per night and it would require to catch some two or three pounds of insects per night to make it pay. Last year the insects were plentiful from the 27th October to the 5th November. Giving an estimate of two pounds of dried insects off each lantern trap, the total catch for a hundred lamps would be nearly 2 cwt. per night or a ton for the ten days’ work. As for the mango jassid I did not know at first if it would prefer immolation in a lantern trap to the allurements of the mango shoots. I find, however, that like the rest of its family it has a strong fascina- tion for light, One can count on ten days or a fortnight for the “ green bug,” a period of nearly three months for the mango jassid, and two months on the “bhindi” jassid. This would mean at least 150 working days for each lamp and the total catch for each lamp would be almost 3 cwt. of insects. This on 200 lamps would represent an outturn of about 30 tons. On a basis of 4d. a pound, this would mean some £1,120. For drying the insects Mr. Finn’s idea of cheap coarse cloth stretched on frames is both inexpensive and efficient. The frames should be double to prevent the insects while drying being eaten up by other birds, like the crows. If, however, the work was taken up on an exten- sive scale, it would pay to use a dryer, such as is used for drying fruit in the United States or tea in India. I could never understand before where the insect hid itself during ox 1903.] H. J. Walton—Occurrence of Motacilla taivana (Swinhoe.) 9 the day. This year while searching for insects on peepul seedlings, I found this jassid packed. away in large numbers under the leaves. Possibly the peepul is its food plant. Peepul seedlings spring up in enormous numbers during the rains in all sorts of likely and unlikely places. For various causes most of these seedlings die out about the beginning of the cold season, but during the time of their growth they would afford an unlimited supply of food for the bug. Note on the occurrence of Motacilla taivana (Swinhoe) near Caleutta.— By Cart. H. J. Watton, I.M.S. Tn the Fauna of British India, Birds, Vol. II, p. 296, under the heading of Motacilla flava, Mr. Oates remarks: ‘‘ An allied species, M. taivana, Swinhoe, from China and the Malay Peninsula, is extremely likely to be found in Burma............. A specimen of a wagtail in the Hume collection killed at Howrah, Calcutta, would appear to belong to this species, but unless supported by other specimens, it would be pre- mature to pronounce it such.” With the exception of the specimen mentioned above, I can find no reference to the occurrence of M. tatvana in India. On January 7th, 1900, amongst a number of live small birds in a coop in the New Market, Calcutta, I noticed a wagtail that I was un- familiar with. I bought the bird and skinned it. I labelled it at the time “? M. taivana.” For various reasons, I have only lately been able to re-examine the skin and to compare it with the wagtails in the © Indian Museum. In doing this, I had the great advantage of the assist- ance of Mr. Frank Finn. My bird differs from all the Indian wagtails in the Museum collection, and except that it is of a slightly duller yellow on the under parts, agrees perfectly with a specimen of M. taivana, from Foochow. Mr, Finn agrees with me that my bird is undoubtedly M. taivana. The distribution of this species, given by Mr. Bowdler Sharpe, in the Catalogue of Birds in the British Museum, Vol. X, is “ Kurile Islands, Eastern Siberia, Dauria, Amoorland, throughout China and Formosa, wintering in the Malayan Peninsula.” The fact of my specimen being exposed for sale in the market in the same coop as a miscellaneous lot of common small birds, “ ortolans”’ in the language of the market—completely negatives the idea that it may have been imported. All these small birds are obtained in the Age” 10 H. J. Walton—Occurrence of Motacilla taivana (Swinhoe.) [No. ], immediate neighbourhood of Calcutta, and there can be no doubt that the wagtail came from the same locality. It is curious that Hume’s specimen should have been killed at Howrah. : My bird is ahen. The following measurements were taken in the flesh :— Length— Total 7 ia JOna- wing Asi aa | tail ons ea bill from gape ... wee, Go tarsus Bi ae OES Iris; dark brown. Bill; upper mandible black: lower mandible pale horny. Legs and feet; black. Ovary ; very small. JOURNAL OF THE ASTIATIC SOCIETY OF BENGAL, 2 ofe & Vol. LXXII. Part IIl.—NATURAL SCIENCE. NOs es eeeee_uaesenmn kk eelee_G5_uoemee5er OEOmNn 0000 00 000 OOS No. 2.—1908. Lal OOOO Novicise Indice XX. Some Additional Scrophularinese.—By D. PRAIN. [Received 24th March 1903. Read 1st April 1903. ] Having had occasion to assort the material of the natural order Scroph- ularinese, preserved in the Herbarium attached to the Royal Botanic Garden at Shibpur, the writer finds, as is usually the case, that there are a number of species belonging to the order which are new to India in the sense that they are not included in the account of the family published by Sir J. D. Hooker in the Flora of British India, vol. iv. (1884). In almost every case the new record is the result of the exten- sion of the territories of the Indian Empire along its north-western and its north-eastern frontiers. Following the practice, commenced now fifteen years ago, of providing diagnoses of species thus found to be new to the Indian flora, arranged according to the method of the Flora of British India, for the benefit of members of the Society who may be botanising near the Indian frontiers, the writer now presents the neces- sary supplement to this particular natural family. Having regard, however, to the needs of those who may be working in the field else- where than on the frontiers, new localities for species already accounted for in the Flora of British India are duly noted. J. uu. 3 12 D. Prain—Some Additional Scrophularinez. [No. 2, 1. ANTICHARIS Enpt. 1. ANTICHARIS LINEARIS Hochst. Add to localities :—Raspurana; Bikanir, where it is known as ‘* Dhunnya,” Major Roberts ! The capsules, in all the Indian specimens at Calcutta, are pubescent. 2. VERBASCUM Linn. 3. VeERBASCUM ERIANTHUM Renth., DC. Prodr. x. 236; Boiss. Flor. Orient. iv. 319 ; thinly ashy-pubescent, lower leaves oblong narrowed to a petiole, upper auricled cordate obtuse or subacute, flowers panicled. Britis Betvcuistan ; Ziarat, Lace! Harnai and Lakkahana, Du- thie’s Collectors! CuirraL; near Drosh, Hamilton ! Kala Drosh, Harriss ! ~ between Mirga and Dir, Harriss! Disrris. Afghanistan ; W. Beluchis- tan. Biennial ; stem 3-4 feet, blackish, paniculately branched upwards. Leaves cre- nate, radical up to 18 in. long, cauline 4-8 in. Flowers in distant tomentose fascicles on the 6-8 in. long branches of the terminal panicle; pedicels unequal, rather shorter than the calyx, ‘25 in. long. Calyz-lobes triangular, partite to the middle. Corolla *5 in. across. Stamens 5, filaments woolly. Capsule ovate, twice as long as enlyx. 4. LINARIA Juss. 2. Litnaria incana Wall. Pl. As. Rar. ii. 43; Benth., DC. Prodr. x. 270. LL. cabulica Hook. f., Flor. Brit. Ind. iv. 251, quoad descript. L. ramosissima VAR. pubescens Stocks Mss., Flor. Brit. Ind. iv. 251. Deccan: Perrottet! C. Inpia: Jubbulpore, Beddome! Goona, King! Nepat: Rambun, Wallich 3910! N.W. Himataya: Sirmore, Vicary ! Jaunsar, Gamble! Fagu, Gamble! Hazara, Stewart! Kangra, Stoliczka?! Chumba, Clarke 23566 in part, mixed with L. ramosissima! Rawal Pindi, Aitchison 213 in part, mixed with ZL. ramosissima! Raseurana: Abu, King! N. Inpta: Htawah, Hume! Currrat, near Drosh, Harris ! The above are the Herb. Calcutta localities for this plant, which the writer is inclined to agree with Clarke and Aitchison in uniting with L. ramosissima. This is the species with softly hirsute leaves and echinate or, as Bentham expresses it “ muricate-tubercular ” seeds, exactly like those of L. ramosissima. 3. Linaria caBuLica Benth., DC. Prodr. x. 270. L. ineana Hook. f., Flor. Brit. Ind. iv. 252. AFGHANISTAN: Griffith K.D. 3859, named by Bentham! Kasumir : Srinagar, Clarke 29124! Gammie! Falconer 763! The above are the localities of the specimens in Herb. Calcutta of this species, which is, as an authentic sheet named by Bentham shows, the one with flowers, capSules, and seeds larger than in L. ramosissima and L. incana; in this plant the seeds have a closely roughly pitted testa, not echinate or ‘‘ muricate-tubercular.”’ 1903. | D. Prain—Some Additional Scrophularinee. 13 5. Linaria Grirrirai Benth., DC. Prodr. x. 272 (Grifithsir) ; Borss. Flor. Orient. iv. 370; perennial, erect, glabrous, leafy, leaves alternate glaucous, oblong, flowers shortly pedicelled, spur rather shorter than the corolla-tube ; seeds discoid marginate. British BeLtvucuistan: Shelabagh, 6,000 ft., Lace! Dusrrip. Af- ghanistan. Stem 1°5-2 ft., branches short ascending. Leavea1'5-2 in. long ; ‘5-75 in. wide, semi-amplexicaul, acute, 5-7-nerved from the base. Flowers in long rather lax spiciform racemes; bracts and calyx-segments lanceolate acute, pubescent; calyw ‘25 in long; corolla yellow, ‘6 in. long, spur slender subincurved. Capsule subglobose, *3 in, in diameter, pale brown. 6. Litnarta opora M. Bieb. Flor. Taur.-Cauc. ii. 76; Benth., DC. Prodr. x. 274; Boiss. Flor. Orient. iv. 373. IL. venosa Lindl. ; Benth. l.c. ; perennial, erect, much branched, glabrous, glaucous, leaves alternate, linear, pedicels short, spur shorter than corolla-tube; capsule globose, seeds smooth wide-margined. W. Hiwanaya: Chitral, Harriss! Younghusband! Gilgit, Giles ! British BeLucutstan: Kanozai, Duthie’s Collector! Distris. Northward to Siberia, westward to Central Europe. Stem 2-2°5 ft. high, branches strict, numerous from the base. Leaves linear- subulate rather distant, entire, semi-terete, canaliculate, 1°25-1'75 in. Jong. Flowers few laxly shortly racemed; calyx small, glabrous or faintly puberulous, segments elliptic subobtuse or slightly acute, ‘15 in. long; corolla yellow, °75 in. long, throat bearded, spur straight or slightly incurved short. Capsule globose, ‘25 in. in diam. 5. SCHWEINFURTHIA A. Braun, 1. ScHWEINFURTHIA SPHAEROCARPA A. Br. Add to localities :—British Betucuistan; Sibi, Lace! Kaloo-killa, Duthie’s Collector ! . 7. SCROPHULARIA Livy. 11. Scropauvaria variecata M. Biebd. Add to localities :—E. Himataya; Phari, King’s Collector ! : 14. ScropHuLaRtaA CABULICA Benth., DC. Prodr. x. 316; Boiss. Flor. Orient. iv. 420; glabrous, glaucescent, leaves small oblong-lanceolate, repandly toothed, cymes few-flowered, divaricate, flowers small distant sessile ; sepals oblong, hardly margined ; staminode linear. N.W. Himataya: Chitral, Harriss! British BeLocuisran : Torkhan, - etc., Duthie’s Collector! Lace ! Stems much branched from the base upwards, 1-1°5 ft. high; branches rigid sparsely leafy below, passing above into long strict thyrsoid panicles. Leaves ‘d in. long, oblong-lanceolate, teeth very faint. Cymes 5-7-flowered divaricately divided, the lower peduncled, the upper nearly or quite sessile, 14 D. Prain—Some Additional Scrophularinee. [No. 2, 9. WIGHTIA Watt. 1. WiGHTIA Gicgantea Wall. For Western read Hastern Himataya; and add to localities of F. B. I, :—Assamu ; Khasia, Hooker and Thomson ! Simons! Jaintea, Wal- lich! King’s Collector! Manipur, Watt! Burma: Bithoko Range, Brandis! Kuby Mines District, King’s Collector! Shan Hills, Alpin ! A large epiphytic climber. 11, MIMULUS Livy. 1. Mimvuus NEPALENSIS Wall. Add to localities of F. B. I.:—Burma: N. Shan States, at Najong, 4,500 ft. Gatacre ! 3. Muimu.us cracitis R. Br. Add to localities of F. B. I. :—Raspurana: Aboo, King! CEenrraL Inp1aA: Goona, King! Betul, Duthie! Assam: Naga Hills at Kohima, Clarke! Manipur, Watt! Burma: Shan Hills, Calcutta Collectors ! 14. LINDENBERGIA Lexum. 1. LINDENBERGIA GRANDIFLORA Benth. Add to localities of F. B. I.:—NortTHern Circars: Ganjam, on.Ma- hendragiri, at 4,500 ft., Gamble 13954 ! A very interesting extension of distribution, especially since the species has not yet been met with on Parasnath or on the other subtemperate hills of Chota Nagpur. 2. LinpenBercia Hooker! Clarke. Add to localities of F. B. I. :—Assam: Dikri Hills, Simons ! Brah- makund, Masters ! 3. LINDENBERGIA PHILIPPINENSIS Benth. Add to synonyms of the #. B. I, :—L. siamensis Tetjsm. & Binn., Nat. Tigds. Ned. Ind. xxv. 411 (1863) ; Mig. in Herb., ex Hook. f., Flor. Brit. Ind. iv. 262 (1884). Adenosma cuspidatum Benth. in Wall. Cat. 3852 (1829). A. macrophyllum Benth. in Wall. Cat. 3858 (1829). Pterostigma macrophyllum Benth. Scroph. Ind. 21 (1835) ; DC. Prodr. x. 380 (1846). Add to localities of F’. B. I, :—Assam ; Naga Hills, Zamba, Colleté ! and Pherima, Prain’s Collector! Banks of Brahmaputra near Dibru- garh, weak plants on sand-banks apparently from seed washed down from higher elevations, Prain’s Collectors ! | 4. LiNDENBERGIA MACROSTACHYA Benth. Delete synonyms of the F. B. I.:—UL. siamensis Mig. in Herb. Adenosma cuspidatum Benth. in Wall. Cat. 3852. . Delete the localities :—Marrapan, Sram, Curva. 1903. | D. Prain—Some Additional Scrophularinee. 35 Some confusion has grown up regarding the identity and the distribution as well as the synonymy of Lindenbergia philippinensis and Lindenbergia macrostachya ; this requires to be definitely settled, if for no other reason than that, as the Flora of British India truly says, the one may prove only a variety of the other. The species Lindenbergia philtppinensis was first described as such in DC. Prodr. x. 877 (1846), the basis of the species being Stemodia philippinensis Cham. & Schlecht. Linnea iii. 5. (1828), and the Philippines being then its only known locality. Hooker in Flor. Brit. Ind. iv. 261, also describes the species but gives it as occurring in Chittagong, Burma, Pegnu, Tenasserim, and as extending to China and “the Philippines. The species Lindenbergia macrostachya, which is admitted by Bentham, as well as by Hooker, to be very nearly related to L. philippinensis, was first described by Bentham in Scroph. Ind. 22 (1835), and is again described in the Prodromus x. 376. It is thas, as a Lindenbergia at all events, older than L. philippinensis. But, since the basis of L. macrostachya is Bentham’s own Stemodia macrostachya in Wall. Cat. 3925 (1829), the epithet philippinensis has priority over the epithet macrostachya. Bentham gives the distribution of L. macrostachya as from the N.-W. Himalaya as far as to Martaban and Moulmein. This, however, he only manages to do by includ- ing in the species his own Adenosma cuspidatum in Wall. Cat. 3852 (1829) which is a Burmese plant. Hooker does not put the distribution in this way. He says that L. macrostachya occurs in the N.-W. Himalaya and in Martaban ; a somewhat differ- ent statementfrom Bentham’s. But it seems clear, from the way in which the citations are made, that the species is considered Burmese solely on the strength of Wall. Cat. 3852. The further distribution Siam is clearly on the strength of Lindenbergia siamensis Miq. in Herb.; that of China is probably on the strength of specimens from China named Lindenbergia macrostachya by Hance and by Maximowiz. The only tangible character in the various diagnoses of these two species is that the style in Lindenbergia macrostachya is glabrous, whereas in L. philippensis it is hirsute at the base. The character of glabrous and pubescent leaves is unreliable ; Hance’s “ L. macrostachya,” for example, is undoubtedly L. philippinensis with nearly glabrous leaves; on the other hand Griffith and King have both collected in North- West India examples of undoubted L. macrostachya with leaves as pubescent as those of L. philippinensis. As a rule the calyx is distinctive but even at best the difference does not amount to much and there are some Burmese examples of L. philippinensis, i.e., ef the plant with a very hairy base to the style, that have calyx-teeth quite like those of L. macrostachya which always has a glabrous style. The corolla of L. macro- stachya is smaller than that of L. philippinensis, but the character, being a relative one, is hardly snfficient for absolute diagnosis, and the corolla of L. philippinensis itself varies too much in size to make the character of more than subsidiary value. By the only crucial character, ‘‘style hairy at the base,’ Adenosma cuspidatum Benth. is certainly Lindenbergia philippinensis! So also is “ L. siamensis Mig.” which is only L. siamensis Teijsm. & Binn., of which I have seen an authentic example and of which there is a drawing made from the living plant in the Calcutta Herbarium. By this test too the Lindenbergia macrostachya, from China, of Hance and Maximowicz, is L. philippinensis. In short Lindenbergia macrostachya is a species strictly confined to Northern India; L. philippinensis is a species that extends from Central China, throughout the whole of Indo-China from the Brahmaputra river eastward to Upper Tenasserim 16 D. Prain—Some Additional Scrophularinee. [No. 2, and to the Philippines. It has not, however, as stated in the Index Kewensis, been yet collected in any part of Malaya. Whether the two plants deserve to be considered specifically distinct is rather an open question. They are easily distinguished in most cases and in any case nre certainly very distinct varieties. 15. ADENOSMA R. Br. 1.* ADENOSMA INOPINATUM Prain; hirsute, leaves ovate-acute, serrate; flowers axillary sessile, 3 outer sepals in fruit very large, rounded at base, about twice as long as broad, 2 inner very small lanceolate. A. ovatum Flor. Brit. Ind. iv. 263 as to the Malay Penin- sula locality, not of Benth. Matay Peninsuta; Malacca, Grifith ! Singapore, Anderson! Kunstler ! Branching from the base, black when dry ; branches 2-3 ft long, often rooting below, prostrate or ascending. Leaves 1°5-1°75 in., base cuneate, tapering to a very short petiole. Fruiting sepals nearly "5 in. long, membranous reticulate pubescent outer twice as long as broad. Flowers blue. | This is very near A. ovatwm from which it differs by its narrower fruiting sepals and still nearer A. subrepens from which it differs by its rather larger, serrate not crenate and acute not obtuse leaves. 9. ADENOSMA HIRSUTUM Kurz, Journ. As. Soc. Beng. xlv. 2. 1483 (1873). Pterostigma hirsutum Mig. Flor. Ind. Bat. Suppl. 562 (1860). P. villosum Mig. Flor. Ind. Bat. Suppl. 562 (1860) not of Benth.; stout, erect, densely tawny-tomentose, leaves very short-petioled, ovate ovate- lanceolate or lanceolate, acute or subobtuse, crenate-serrate, flowers in dense cylindric villous bracteate spikes, corolla blue; capsule ovate abruptly beaked. Nicopars: Kamorta, Kurz! Matay Preyinsuna, Prov. Wellesley, at Kuleang Ulu, Curtis 2238! Disrris. Sumatra, at Rau (Tei7smann me ! Bangka, near Djebus (Teijsmann 3429) ! Stems 2-4 ft., and leaves on both sides densely villous with ie hairs, as are the leafy bracts °75 in. long at base of spikes, but gradually decreasing upwards. Spikes 2-3°5 in. long, very dense. Calyx-teeth lanceolate, the uppermost largest. Capsule straw-coloured. The bracts of the Nicobar specimens are rather larger than these of the original Sumatra plant but the leaves are identical. The leaves of the Malayan Peninsula plant are rather narrower, but the bracts are exactly as in the Sumatra plant. The Bangka plant is rather more slender, but has the same compact heads with leafy bracts and tawny pubescence, and is very different from Pterostigma villosum Benth. (Adenosma cerulewm) to which Miquel has referred it. The nearest ally of the species is Adenosma capitatum from which, however, it is very distinct. 8. ADENOSMA MACROPHYLLUM Benth. This plant, founded on Wall. Cat. 3853, as represented in Herb. Calcutta, is only Lindenbergia philippinensis. eae ot ees 1903. ] D. Prain—Some Additional Scrophularinee. 17 17. LIMNOPHILA R. Br. 2. LIMNOPHILA BALSAMEA Benth. Add to localities of F. B. I. :—Matay Peninsuna; Perak, Kunstler 1027 ! Leaves rather dark green, flowers blue (Kunstler). 5. LIMNOPHILA MICRANTHA Benth. Add to localities of F’. B. I. :—Matay Peninsuta; Pahang, Ridley | : 6. LiMNopHiLa ERECTA Benth. Add to localities of F. B. I. :—Matay Peninsuta; Perak, Wray! Kunstler! Pahang, Ridley ! The stems are sometimes 12 in. long, and the leaves sometimes 1°5 in. long. 8. Limnopuita vittosa Bl. Bijdr. 750. UL. javanica A. DC. Prodr. x. 094. L. pulcherrima Hook. f., Flor. Brit. Ind. iv. 267. 11. Limvnopuita nrrsuta Benth. Add to localities of F. B. I. :—Matay Peninsuta; Perak, Kuns- tler ! Scortechini ! 17. LINoPHILA SESSILIFLORA Bl. Add to localities of the F. B. I. :—Burma; Hotha, J. Anderson ! Kachin Hills, Shatk Mokim! Anpamans; Port Blair, King’s Collector ! The Burmese localities are very far north; the species may however occur else- . where but have been overlooked. At Port Blair it is to be suspected that the species has been accidentally introduced with seed of rice from India. 21. LIMNOPHILA GRATIOLOIDES R. Br. Add to localities of F. B. I. :—Cuittacone ; Puttea, Clarke! Burma ; Rangoon, Kurz! Tenasserim, Helfer ! | The great rarity of this species to the east of India Proper leads to the sus- picion of introduction. 22. Limnopuita Grirritail Hook. f. This interesting little species has also been collected in Perak by Kunstler, who reports the flowers as pure white, so that the plant from Nigeria referred to by Hooker may be actually the same. 18. HERPESTIS Garry. 4. Herprstis coamapryoipes H. B. & K., Nov. Gen. & Sp. ii. 369 ; Benth., DC. Prodr. x. 393 ; decumbent, leaves short-petioled, ovate, tooth- ed; pedicels solitary, ebracteate; upper sepal ovate, 2 lower ovate or oblong ; capsule ovate. Lower Bencat: Shibpur, plentiful. Quite glabrous, not at all succulent ; branches 3-6 in. long. Leaves ‘5- 15 i in. long, narrowed to the distinct petiole. Pedicels as long as or longer than the leaves. Fruiting calyx *3 in. long. Corolla yellow, rather longer than calyx. 18 D. Prain—Some Additional Scrophularinee. [No. 2, This small American weed has, of late years, become quite naturalized on paths and in waste corners in the neighbourhood of Calcutta. 22. CURANGA Juss. 1. CURANGA AMARA Juss. Add to localities of F. B. f.:—Matay Penrnsuta; Perak, Scorte- chini ! Pahang, Ridley ! 23. TORENIA Linn. 3. TORENIA CORDIFOLIA Roxb. In all the specimens examined by the writer the lower filaments are distinctly toothed. 5. TORENIA ASIATICA Linn. Add to localities of F. B. I.:—Matay Peninsva : Perak, Scortechini ! Curtis ! Add to distribution :—Sumatra. 6.* ToRENIA RUBENS Benth., DC. Prodr. x. 410. This is included under T. vagrns in the F. B. J., and may, as Hooker suggests, be but a form of that species. The two are, however, very easily distinguished in the Herbarium by the smaller, often minute, teeth on the longer filaments of T. rubens. They are still more easily distinguished in the field by the colour of the flowers : T. vagans has a fairly uniform blueish-purple or dull-violet corolla; 7. rubens has a corolla with a pale lilac or nearly white tube with three bright violet-purple spots. 10. Torenta FLAVA Ham. Add to localities of F. B. I.:—Matay Peninsvuta: Perak, Kunstler ! Kunstler describes the corolla of this as bright yellow. 1k. Torenra cinratTa Sm. | Add to synonyms of F’. B. I. :—T. flava Mig. Flor. Ind. Bat. Suppl. 237. Add to localities of F. B. I. :—Matay Prentnsuta : Perak, Scortechini ! Kunstler! Distrte. Sumatra (Teijsmann 1182) ! Teijsmann’s original specimens of “7. flava Miq. non Ham.” are marked corolla cerulea. Two species of Torenia collected hy Teijsmann and described by Miquel I have not seen. One of these is T. lamponga which from Miquel’s description ought certainly to be T. peduncularis; the other is T. cerulea and it ought equally certainly to be T. ciliata. 12.. TorentA BENTHAMIANA Hance, Ann. Sc. Nat. Ser. 4. xviii. 226 (1862) ; decumbent diffuse rooting at the nodes, finely tawny-tomentose ; leaves petioled deltoid-ovate acute, serrate; pedicels axillary larger than the calyx or the leaves; fruiting calyx oblong, subclavate, 5-angled, keeled and chanelled, not winged; lower filaments with a very long slender tooth. 1903. ] D. Prain—Some Additional Scrophularinee. 19 Matay Peninsuta: Johore, Ridley 4160! Distris, China (Hance 5901)! Cochin-China. Stems slender, up to a foot long; leaves °75-1 in. long including the petiole *2-'25 in. long, base rounded truncate. Calyx ia fruit ‘5 in. long, peduncle °75-1°5 in. long. Corolla ‘6 in. long, yellow with purple eye. This seems to be the T. flava Bot. Mag. t. 6,700 not of Ham. 24. VANDELLIA Livy. 3. VANDELLIA STEMONOIDES Mig. Flor. Ind. Bat. Suppl. 563 (1860). V. Hookeri Clarke Flor. Brit. Ind. iv. 280 (1884). Distris. Bangka, (Tetgsmann 3242) ! 6. VANDELLIA HIRSUTA Benth. Add to localities of F. B. I. :—Matay Paentnsura: Perak, Kunstler ! Pahang, Ridley ! 7. VANDELLIA scaBRA Benth. Add to localities of F’. B. I. :—Matay Peninsuxa: Prov. Wellesley, at Butterworth, King! Singapore, Kunstler ! 8. VANDBLLIA MOLLIS Benth. Add to localities of F. B. I.:—Burma: Chin Hills, Abdul Hug! Add to Distris. :—Sumatra, (Forbes 1981)! Java, (Kurz 555) ! 8*, VANDELLIA PUNCTATA Prain; procumbent, quite glabrous; leaves shortly petioled orbicular-ovate, succulent, crenate-serrate, distinctly punctate; pedicels in axillary and terminal racemes much longer than the calyx; sepels lanceolate glabrous not quite so long as the ovate capsule. SHan Hitis: Fort Stedman and Taungyi, King’s Collectors ! Stem creeping below 12-18 in. long, somewhat succulent. Leaves ‘5-°75 in. long, quite glabrous. Racemes up to 2’5 in. long, distantly 10-12-flowered; pedicels very slender ‘4 in. long. Sepals ‘15 in. long, lanceolate glabrous except for the finely ciliate-serrate margins. Corolla ‘3in. long, pale purple. Filaments glabrous. Cap- sule ‘2 in. long. This species is most nearly related to V. scabra and V. mollis, the flowers and capsules much resembling those of the former, the influence being exactly that of the latter. From both it differs in its quite glabrous leaves which are thicker than in either and are very distinctly punctuate. 12. VANpDELLIA PEDUNCULATA Benth. Add to synonyms of #. B. I.:—V. cerastioides Coll. & Hemsi., Journ. Linn. Soc. xxviii. 100. Add to localities of F. B. I.:—Burma: Tagaung, J. Anderson! Poneshee, J. Anderson! Pegu, Kurz! Shan Hills, Collett! Mapay PeninsuLa: Malacca, Harvey! Singapore, Kunstler! Add to Disrriz, :— Sumatra (Beccari 873) ! J. um. 4 20 D. Prain—Some Additional Scrophularinee. [No 2, 25. ILYSANTHES Rarity. 1. ILYSANTHES HYSSOPOIDES Benth. Add to localities of F. B. I. :—Cuora Nacrur: Sirguja, J. J. Wood! 26. BONNAYA Link & Orrvo. 2. BONNAYA REPTANS Spreng. Add to localities of F. B. I.:—Matay Peninsuna: Perak, Scorte- chini! Wray! Singapore, Hullett! Ridley ! Pahang, Ridley ! This species appears to be common in the Eastern Peninsula, B. brachiata, on the other hand, being rare. The latter was collected at Singapore by Wallich in 1822, but had been recorded by no one else till recently when it was collected by Ridley in Pahang. The two are very similar and perhaps B. brachiata may have been overlooked. 4. BONNAYA PEDUNCULARIS Benth. This species is based ou Wall. Cat. 3865, and, so far as the Calcutta example of that number is concerned, is simply typical Vandellia angustifolia, becanse it has 4 perfect stamens. . 32. SIBTHORPIA Linvy. 1. SrBTHORPIA PINNATA Benth. Add to localities of the F. B. I. :—Sixkim: Tongloo, 10,000 ft. Lister ! Clarke ! Gamble! King’s Collectors ! 33. HEMIPHRAGMA Watt. ]. HEMIPHRAGMA HETEROPHYLLUM Wall. Add to localities of F. B. I,:—Naca Hiuis: Japvo, Clarke! Manipur, Watt! Burma: Kachin Hills, Prain’s Collectors! North Shan States, Hantong Stream, 5,200 ft., Gataere ! 39. VERONICA Liny. 13, Veronica cana Wall. Var. robusta Prain; stems stoutish, up to 2 ft. high ; leaves larger over 2 in. long; more densely tomentose everywhere; calyx-segments acute ; fruit less deeply 2-lobed than in the type. Sixxim: Phallut, Tongloo, Kalipokri, Tassijour and a in Western Sikkim, common. Larger in all its parts and more robust than the typical plant. 15. Veronica gavanica Bl. Add to localities of F. B. I.:—Ntxeiris: Gamble! 40, ALECTRA Tuuns. 2. ALEcTRA THomsont Hook. f. Add to localities of F. B. L: :—-Noada i in Singbhum, Clarke! Raj- 1903. ] D. Prain—Some Additional Scrophularinee. “21 mahal Hills near Sahibganj, Kurz! Chanda District, C. Provinces, at Patal Pani, near Alapilli, Duthie ! 42, STRIGA Lovcr. 3. Srrica LUTEA Lour. Add to localities of F. B. I.:—Awnpamans: Port Blair, Prain! King! Matay Penrnsuta: Pahang, Ridley (the yellow-flowered form) ! Singapore, Kurz (the pink-flowered form) ! 44, CENTRANTHERA R. Br. 1. CENTRANTHERA GRANDIFLORA Benth. Add to localities of F. B. I. :—Assam: Manipur, Watt! Burma; Chindwin Valley, Prazer ! 45. SOPUBIA Ham. 2. Sopusia TRIFIDA Ham. Add to localities of F. B. I.:—Naga ead common, Prain ! Mani- pur, Watt! Burma; Chin Hills, Prazer ! ‘Shan Hills, King’s Collectors ! Distris. Bali (Zollinger) ! A specimen of this species, n. 3,889 Zollinger, is in Herb. Calcutta, with the MSS. name Sopwbia sulphurea Kurz. It was collected among the volcanic ash of Mt. Bator, in Bali, at 4-5,000 ft. in Sept. 1837. Of Sopubia stricta, which was already recorded from Java, there is also a specimen from Madura, collected by Teijsmann. 47. LEPTORHABDOS Scurenx. 2. LEPTORHABDOS LINIFOLIA Walp. Add to localities of F. B. I. :—Hazara ; Kagan Valley, Duthie’s Qoi- lector ! Gilgit, 8,000-9,000 ft., Giles! Lahul, Jaeschke ! This form, which Duthie’s collectors have also collected more than once in Baltistan, differs both from L. parviflora and from L. virgata in the points noted by Hooker, but it hardly differs more from either of these forms than they do from each other, and the Flora of British India is almost certainly right in suggesting that there is but one species in the genus. 48. PHTHEIROSPERMUM Bonaee. 3. PHTHEIROSPERMUM TENUISECTUM Bur. & Franch. Journ. de Bot. v. 129 (1891); Prawm im Hook. Icon. Pl. t. 2211 (1894); glandular- pubescent; leaves ovate-acute 2-3-pinnatisectly dissected, segments linear ; calyx-lobes subequal ; corolla-tube nearly twice as long as calyx. Hastern Himanaya: Chumbi Valley at Tassi-chen-doom, King’s Collector ! Distr. Tibet, W. China. Stems slender from a perennial woody rootstock, many, simple or sparingly branched. Leaves ‘75 in. long, nearly 1 in. wide. Flowers axillary, shortly pedi- 22 D. Prain—Some Additional Scrophularinee. [No. 2, celled. Calyx ‘3 in. long. Corolla ‘5 in, long, *2 in. wide. Capsule compressed beaked. Seeds with reticulate testa. 52. PEDICULARIS Liny. 11.* PeEpDICULARIS DIFFUSA Prain, Journ. As. Soc. Beng. 1xii. 2, 7, t. 1 (1893); glabrescent, stems erect or ascending, cauline leaves 4-nately whorled petioled ovate-oblong pinnatisect, segments oblong-obtuse, in- cised-serrate ; flowers whorled, whorls numerous distinct; corolla-tube twice as long as calyx, upper lip slightly curved, apex somewhat in- curved not beaked; lower lip 3-lobed, lobes oblong-ovate with sinuate margins the lateral one-half larger than the central; stamens inserted opposite top of ovary, anterior filaments bearded above. Eastern Himataya: Sikkim, Mt. Tankra, Gammie ! Stems 1°5-2 ft. long; cauline leaves ‘75-1 in. long, petioles *25-'4 in. long, radical leaves evanescent. Flowers in rather distant whorls, except the uppermost ; bracts leafy. Calyx *25 in. long ; lobes rather large, unequal ; the anterior and lateral ovate, incised-serrate, the upper deltoid entire, small; lateral twice as large as anterior 4 times as large as upper. Corolla rose; tube widened upwards, 4 in, long; limb ‘2 in. wide; lip *3 in. wide. Capsule narrowly lanceolate, acute, twice as long as calyx, ‘5 in. long. Seeds ovoid, testa black, finely reticulate. Most nearly related to P. verticillata Linn. and P. refracta Maxim., but while differing considerably from both in habit and foliage, it further differs from P. verticillata in having a calyx with large teeth and with the tube reticulated throughout, and further differs from P. refracta in having the anterior and lateral calyx-teeth serrate instead of entire. In habit it most resembles P. flexuosa, but is glabrescent, where that species is hirsute, or still more P. gracilis var. macrocarpa, from which it is hardly distinguishable in fruit. The flowers of these two last species have, however, long-beaked corollas. 30. PEDICULARIS FLAGELLARIS Benth. Add to synonyms of #. B. I.:—P. Gammieana Prain, Journ. As. Soc. Beng. lviii. 2. 260; Ann. Roy. Bot. Gard. iti. 162. 32. PEDICULARIS CURVIPES Hook. f.; Bot. Mag. t. 7735. Add to description of F. B. I. :—Corolla-tube not longer than the calyx; lower lip sessile, ‘6 in. wide, pale rose-coloured, white towards the mouth, 3-lobed, glabrous, lateral lobes obliquely rounded, median much smaller, orbicular, emarginate or obcordate ; upper lip puberulous, bright rose-red erect and inflated, arcuate, ending in a decurved slender beak. 53. LATHRAA Linn. 2, LAaTHR#A PURPUREA Cummins, Journ. As. Soc. Beng. Ixiv. 2. 137 (1895) ; calyx cylindric campanulate, hirsute, 10-ribbed, slightly 2- lipped. Eastern Himataya: Bhutan, Dichu Valley, 12,000 ft. Cummins / Sikkim, Singalelah, 13,000 ft., King’s Collector ! 1908. | D. Prain—Some Additional Scrophularinee, 23 Diffusely branched ; stems short, 3-4 in., purple, slender; scales purple, orbicu- lar, obtuse, opposite, short-petioled; flowers racemed rather long-pedicelled, erect ; bracts subsessile like the stem-scales. Calyx purple. Corolla-tube purple, about twice as long us calyx, ‘75 in. long ; upper lip purple hooded, subacutely toothed below the apex on both sides; lower lip 3-lobed, purplish-white with dark purple veins. Sta- mens didynamous, included ; anterior filaments pubescent throughout and one-third shorter than the posterior which are only pubescent towards the apex. Ovary 2-lobed, purplish ; style simple ; stigma very small, subexserted ; each chamber 10-15- ovuled. Nearest to DL. clandestina Linn., but differing in its nearly uniform purple colour, its subentire calyx, and its smaller corolla with subacute not rounded subapical teeth. 24. ©. Little—On two remarkable rain-bursts in Bengal. _—_[ No. 2, On two remarkable rain-bursts in Bengal ; and some of the more prominent features of the monsoon season in Northern India in 1902.—By C. Litre. [Received 18th March 1908. Read 1st April 1903. ] Part I. The south-west monsoon is a subject of enduring interest to many, not only to those who are continuous residents in the plains of India, or to those who are interested in raw products, but to all professional meteo- rologists, and to many other scientific men, whose work dovetails in with meteorological investigations. I make no claim to belong to any of these classes except the first, but my official duty as storm-warning officer for ports in the Bay of Bengal, has made it necessary for me to try and follow others in their advances in the direction of explaining complicat- ed atmospheric changes. Any attempt by me to go beyond the réle of follower has been either with the purpose of educating myself or merely as a pastime, and in either case it is not likely that it will be much, or any advantage to others to know what I have been studying, or what conclusions I have come to. In my position of follower I have one strong belief which is, of course, a not uncommon belief, and it is that much of the weather in Northern India during the monsoon season depends on storms, which develop in the Bay of Bengal, or to be on the safe side, which enter India from the Bay. I have another belief which may not be so common, viz., that, in one important respect intimately connected with the character of the monsoon, the behaviour of these storms is as yet a mystery. My main object in offering this brief paper for publication is that, by showing my ignorance others may be induced to supply the necessary information, — or that if that information is not available, the collection of meteorological statistics may be more specially directed so as to meet a most important demand. ; The difficulty I have felt is, how to account for the line of advance of storms (the word here meaning any cyclonic disturbance, slight or severe), while moving over the Bay, or the part of the country, which they may devastate or enrich. The past few years appear to me to have cast into strong relief the importance of having this matter placed, if possible, beyond question, so that the direction of advance may not only be accountable for after the event, but may be capable of exact forecast several days before. The importance of what is called the recurv- ing of cyclonic storms was shown in 1899, when nota single depression entered India from the Bay but recurved over Central India, and as 1903. ] C. Littlek—On two remarkable rain-bursts in Bengal. 25 every one will remmember the general distribution of rainfall in that year was great scarcity in the west and abundance in the east. The past monsoon season has been even more rich in evidence, in favour of the enquiry, which I here suggest, being one of first class importance. The recurving of cyclonic disturbances, is not the only important matter of enquiry which a discussion of the past monsoon season brings to the surface. The disturbed weather which extended along the Hima- layas on two occasions appears to me to indicate the direction in which the enquiry as to recurving should be made. These disturbances were the immediate cause of the two rain-bursts in Bengal, and I have on that account used them as a title for this paper. In what follows I have given small tables containing the more important meteorological statis- tics collected at the time of their occurrence and I have endeavoured to show how they serve to divide the monsoon season into periods which have important characteristics as regards the recurving of storms from the Bay and of the rainfall distribution in Northern India. No one who gives any consideration to such matters can have forgotten the famine cloud that was hanging over North-Western and Central India, in the early part of August, and the rapidity with which that foreboding vanished, when the storms from the Bay moved towards the area of drought. Some Calcutta people may remember the change that occurred in the weather here on the 30th June. On that date a very trying period of hot muggy weather came to an end, and there began, at last, what had all the appearance of the south-west monsoon. If there should be any doubt in the minds of my Calcutta friends as to what happened here on that date, I am sure residents of Benares will remember the relief they must have experienced, not on the 30th June, but on the 2nd July, that is, two days later, when their excessive: temperature gave place to the comparative coolness of the south-west monsoon. The interval of two days between these occurrences shows one of the points which I wish to make out, viz., that the change progressed from east to west. No one, I think will be likely to challenge that statement because it is accepted by everyone that south- west monsoon conditions gradually extend from the head of the Bay north-westward into Northern India. The other point which I wish to make, and which may not be readily accepted, is that the disturbance to which that change of weather was due, began in the north-east of India, and while progressing westward also extended southward over Bengal Proper in the first instance, then over Orissa and on to the Circars. It was even felt in Arakan and Madras though not very noticeably, Of the occurrences accompanying this wave of change, which 26 C. Little—On two remarkable rain-bursts in Bengal. [No. 2, passed over Bengal, one of the most noticeable on the meteorological record of the time is the heavy rainfall in Bengal Proper, between 8 a.M. on the 29th, and 8 a.m. on the 30th June. It appears in the record as rainfall of the 30th June. I may, perhaps, be allowed to digress here for a moment to point out the difficulty, which I shall refer to later on, in establishing the sequence of events in atmospheric matters. The only record of such events is what the observers note at certain fixed hours—mostly 8 a.m., supplemented at a few places by observations at 4 p.m. If any change passes so rapidly over the land that it is completed within the 24 hours, between 8 a.m. of one day, and 8 a.m. of the next, it appears, as a simul- taneous change and at times, an important part of the change is lost altogether, For instance, when a cyclone of small extent passes over an observatory the rapid fall of pressure during the approach of the central area and the rapid rise, after its passage, may occur in a few hours, and neither will be shown by the 8 am. record of that station, unless the passage occurs about that hour. For that reason, the pressure record of a disturbance, with a high rate of progress, is of less value in a historical survey than are those for temperature and rainfall. It would be a very awkward circumstance if the rain which falls, say in the afternoon, were to evaporate before it could be measured next morning. But the rain- fall.remains and though some rise of temperature occurs after the passage of a disturbance the recovery is slower than that of pressure, more especially if there should be a good deal of cloud at the time. Because of this difficulty as regards the record of pressure changes I rely more on the rainfall and temperature changes to prove the progressive motion from north to south for the disturbance which accompanied and no doubt caused the rainfall of the 30th June. The second disturbance with which the rain-burst of the 11th ~ August was associated was no less remarkable than the first, but it was less striking to the ordinary observer because there was not the same reversal of temperature. In one respect it was even more noticeable and that was as regards the pressure changes which in this case, strongly support the view that the disturbance entered India from Thibet, A reference to the Indian Daily Weather Report, will show that the fall of pressure preceding the June rainfall, occurred almost simultaneously over the whole of India so that pressure changes alone would not.be sufficient to prove that the disturbance did not come from_ some other direction, from the Bay of Bengal for example, but the pressure changes preceding the August rainfall leave no room for doubt that that disturbance did not originate over the Bay. The fall of pressure began in the north-eastern Himalayas and from there, extended » 1903. ] C. Little— On two remarkable rain-bursts in Bengal. 27 westward and southward. The southerly element in this progressive movement was less marked in the second than in the first disturbance, as shown by both pressure and temperature changes. The explanation of the weather changes for the periods represented for the purpose of this paper by the 30th June and the 11th August appears to be that just previous to these dates, depressions were crossing Thibet towards the Himalayan range, the first moving in a south-westerly, and the second in an almost due westerly direction. These depressions on reaching the Himalayas became to a certain extent broken up, more especially the former whose direction of motion had been almost per- pendicular to the range of high hills) Owing to the comparatively small height of the hills to the north of Assam, a disturbance of some intensity entered that province and moving south-westward caused the rainfall in Assam and Bengal. The higher hills in Nepal, formed a more serious obstacle to the progress of the general disturbance, and that may be the reason why on both occasions the changes appear to have been delayed in Bihar and the United Provinces. The fact that the depressions had to pass over a range of hills extending in places to between twenty and thirty thousand feet, adds greatly to the difficulty of establishing continuity in the changes that occurred. What adds still further to the difficulty is that when a cyclonic storm encounters a range of hills of height sufficient to cause disintegration of the cyclonic system of air motion, local storms with large irregular changes of pressure and temperature and with irregular rainfall generally occur. In almost every case where a cyclonic storm moves northwards from the Bay of Bengal towards the Himalayas the storm breaks up very suddenly on reaching the hills, and instead of a well defined depression with cyclonic winds we find in a few hours a uniform distribution of pressure with numerous thunderstorms, it may be along the whole line of the Himalayas. Judging by what one observes of these storms, from the southern side of the range of hills it is very improbable that weather becomes disturbed in Thibet after a storm from the Bay of Bengal disappears amongst the hills. But that is not a sufficient reason for arguing that a cyclonic storm may not cross the Himalayas from Thibet into India. In the first place the Thibetan storm is at a high altitude, because of the Central Asian plateau, and a second reason is that the obstacle which the hills present, to the progress of a storm, from the Thibetan side is not nearly so serious as to storms from the south. There would be more or less isolated peaks to pass, instead of the solid wall, formed by the lower ranges up to 10,000 feet, surmounted by the peaks. Among the general conclusions given in the Monthly Weather J. U. O 28 C. Little—On two remarkable rain-bursts in Bengal. —__[ No. 2, Review for June, 1902, issued by the Meteorological Reporter to the Government of India, and Director-General of Indian Observatories, and suggested by the discussion of the atmospheric conditions in June in Europe, Asia, Africa, Australia, and the adjoining seas, the following occur :— (1) “That conditions in India may be sometimes largely condi- tioned by actions taking place in the Central Asian areas, and that occasionally these actions extend over the greater part of Europe and Asia.” (3) “ That these actions are largely modified by the barrier of the Himalayas and seem to spread more readily southwards through the gaps in the range.” These conclusions: may I think be mterpreted, as giving general support to my assumption that it is possible for a storm to cross the Himalayas into India from Thibet ; but as regards my statement, that the depression moved towards India from a north-easterly direction, the Mouthly Weather Review takes up an entirely different position. Discussing the changes of the 28th June it is there stated that ‘‘Large and important changes occurred on this day” and subsequently “It hence seems probable that the main centre of the action was near Gilgit, and that it extended almost up to Lake Balkash on the north, to Chitral on the west (where pressure was steady) and on the south over the greater part of India. It is impossible to further define the scope of the action for no data are available for the regions to the east of Gilgit. The fact, however, that the fall in Upper Assam was only moderate seems to indicate that the action did not extend far eastwards into Thibet.” What the comparatively small readings on that date in Assam appear to me to indicate is, that the wave of change had passed rapidly over Thibet, that the 8 a.m. pressure readings on the 28th in the north- east ineluded some part of the recovery which had, by that time, com- menced in the east; and that it had not reached the neighbourhood of Gilgit, etc. The great rapidity with which that change of pressure occurred is shown by the almost uniform fall over India, as given by the pressure readings at 8 a.m. of the 28th. The main resnlt is that the pressure changes on that occasion give little or no indication of the direction of advance of the disturbance and that if there were no con- firmatory evidence in favour of a westerly movement from other sources reliance would have to be placed on temperature and rainfall only. But the storm of the 11th August and adjoining days shows beyond all question, that that depression moved from east to west, and as in all other respects there was a striking resemblance between the two storms 1903. | OC, Littlh—On two remarkable rain-bursts in Benga. 29 it appears to me to be an established fact that the depression accom- panying tbe rainfall of the 11th June passed over Thibet in a westerly or south-westerly direction, and that at 8 a.M. on the morning of the 28th, the region of Gilgit was near the front of the advancing wave. Before commenting separately on the information regarding these storms preserved in the meteorological records, I will again point out that from whatever direction the storms entered Northern India, it was not from the Bay of Bengal. For several days before and after the two dates, mentioned above, weather was unusually quiet over the Bay, and in one respect was in striking contrast to what is usual in disturbed weather. At Diamond Island the most exposed of the observatories on the sea coast easterly winds of greater or less strength are an invariable accompaniment of disturbance. During the two periods of disturbance the direction was westerly day after day, which would indicate that weather was more probably disturbed over the south of Burma, than over the Bay, that is, if there were any disturbance in that region. The unusually low wind velocity at Diamond Island is sufficient in itself to prove that there was disturbance, neither over the Bay nor in Burma, until some days after the events under discussion. Part II. The following tables give in the form which appears to me most convenient for purposes of comparison, the data for the storms in succes- sion. When weather is unsettled changes at different observatories are often very irregular more especially when local storms are frequent as appears to have been the case on both of these occasions. I have there- fore given the average change for divisions containing four to six observatories or even more. The number of stations for each province or division is given in the rainfall tables, Storm of June 30th. The following tables I (a) and II (a) give the pressure changes from June 27th to July Sth, and the variation from the normal in Assam, Bengal Proper, and on the northern coasts of the Bay, arranged with the view of showing the southerly movement of the disturbance. As I have already stated the pressure change is practically useless for this purpose in the case of the June storm because it extended over India with great rapidity. The fall on the 28th was general and it continued in the north on the 29th. The recovery began on the 30th and extended from Assam and Bengal Proper to Orissa on the Ist July, practically the only evidence of south-westerly movement, afforded by the table. Table II (a) shows that pressure was relatively high on the 27th June, and that 30 C. Little—On two remarkable rain-bursts in Bengal. [No. 2, there was continued excess, over the area represented, throughout the period except in Bengal Proper and Assam on the 29th June, and the Burma coast on the 2nd July. If the smallest excess or largest defect be selected for these divisions it will be found in the column of the 29th for Assam and Bengal Proper, of the 30th for Orissa, and of later dates for the Circars, Akyab,and Diamond Island. The relatively small excess on the oth in the Circars and at Diamond Island is due to a cyclonie storm which began in the south of the Bay about that time. TaBLE I (a). Giving the pressure change daily from June 27th to July 5th, arranged to show the southward movement of the disturbance. June | June} June | June} July | July | July | July | July 4 5 27 28 29 30 1 2 3 Assam wee |= '012”| — °080”| — °026”| + °041”| -+ 006”) — 013”| + °038”, +°053”| +024” North Bengal | —°009| —°073} —-083/} +°096} —*006) —:009) +°027| +°040] +:°029 East Bengal... | +°003 —°075| —'032} +°060| —°025| —-021} +:005| +:087] +:'018 South-West Bengal .. | +°002; ~—°081} —‘042) +°037| +°027| ~—°024) +°012) +:°075| +-°004 Orissa we | +°014) —*045) —'032| —-006) +°027; —°028) +:°005} +:°032| +°028 Circars .. | +°031) — 028) —‘008) +°602} —-019) +°002) —-024) +°003} —‘004 Akyab we | ='001) —°043 000} +°005} —:023} —:012) +°017| +:°073| —:019 Diamond Island| +°038} —:‘025} —:012} —:015} +:°O11) —‘044| +°024| +:008] +:004 Tasie II (a). Giving the pressure variation from the normal from June 27th to July oth, arranged to show the southward movement of the disturbance. June | June} June | June} July | July | July July | July 2 3 4 5 27 28 29 30 1 Assam wee | FOLIL”| +034” — 002 | +°045”! + -047”| + °029”| + 055” + °112”| +°139” N. Bengal ...| +°115) +°04| —:041} 4-049} +°047} +036] +:°064 +°108) +°133 Hast Bengal... | +°116] +-°039] —-001| +°063) +:040| +016) +°025 +°109| +°127 South-W est Bengal... | +123) +°050} +-010) +:041| +°058] +°031] +°045 +:°124) +°126 1908. ] C. Little—On two remarkable rain-bursts in Bengal. 31 TasiLe II (a).—Contd. June | June | June | June | July | July | July | July | July 2 3 4, 5 27 28 29 30 es Orissa .. | +°130) +:°082) +°043) +°0385) +:°064) +°038] +-044) +°081] +°110 Circars .. | £°100| +°070) +°06)| +°062} +:042) +:°04]) +:018) +:020) + O15 Akyab eee | +°085) +°041) +°040) +:°044) 4°020) +:°007} +°023) +°096| +-077 DiamondIsland| +°071| +°044) +°031) +°015} +°025| —°020} +°003) +°010| +°013 Tables III (a) and IV (a) give the temperature change and varia- tion from the normal for the same provinces and divisions as tables I (a) and II (a), prepared in the same way and with the same purpose, vwiz., to show the southward movement of the wave of disturbance. To assist the eye I have had the larger changes and the larger variations printed in bolder type. It will be readily seen that the rapid fall of tempera- ture began in Assam and North Bengal on the 29th June, in Hast Ben- gal on the 30th, in South-West Bengal and Orissa on July Ist, and in the Circars on the 2nd. There is here clear evidence that a wave of falling temperature proceeded from North-East India in a southerly direction beginning about the 29th June, and reaching the more southern districts three days later. Akyab and Diamond Island felt the change later and not to the same extent, as might be expected from there being a westerly element in the movement indicated by subsequent tables. From Table IV (a) it will be seen that mean defect in Assam was 5°°7 on June 30th, about 5° over the whole of Bengal Proper on July Ist, 4°3 in Orissa on the 2nd, 3°1 in the Circars on the 3rd, and 4°6 at Akyab on the 4th, while at Diamond Island there was a moderate to large excess throughout the period. It is impossible to say whether the fall of 1°°5 at Diamond Island on the 5th is connected with the wave of falling temperature so clearly indicated as proceeding from the north-east or with the cyclonic dis- turbance which began over the south of the Bay about that date. 32 C. Little—On two remarkable rain-bursts in Bengal. [No. 2, Tasue III (a). Giving the temperature change daily from June 27th to July 5th, arranged to show the southward movement of the disturbance. June | June |June | June | July } July | July | July } July 27 28 29 30 1 2 3 4 5 o_o ee eee ee Assam... wee] +.2°4°) —0°2°7— 2°79 —3°2°) + 8°3° +1:3°| +0°89 +059 —1°6° North Bengal ee} +2°5| —1'2) —18)/—2°3) —1°6) +4°4| —02) —15) +1°8 East Bengal wo.) #£0°2) 41:0) —O'7) —4°2] ~—2.2) +4°]; +0°3) —16) +0°8 South-West Bengal | —1‘1] +1°5) +06) —1:3) —7°3/ +386, +1'8) —20) —2°6 Orissa... | +272) —O'7]/ +09) +03) —5°6| —3°5) +6°6] +06) —3°6 Circars vo] =O°5) —3°2) 41-2) ~10) 41-0) —4°4) —0-4)4+4°]1) +01 Akyab... .{ —O°8} +10) —O'2) —2°3 0:0] +0°8) —2°3} —2°3) +3°8 Diamond Island ..| +1°8 +05 +0°5} +0°2} +0°5 00| —O1} +07) —1'5 TAPin EY (a): Giving the temperature variation from the normal from June 27th to July 5th, arranged to show the southward movement of the disturbance. June | June| June | June | Jaly | July | July | July | July 27 28 29 30 1 = 3 4 5 Assam eee] +0°8°| +0°3° —2°0°| —5°7°| —2°99) —0°5°| +0°7°| +0°4°| —0°9° North Bengal ...| +2°2/ +1'2) —O&| —3:1) —5°5| —0°7} —1:3) —2°7) —0°4 East Bengal eee| #12) 42:2) +1°5) —2°7)~6°O} —O0'9} —0°5) —2:1) —1°2 South-West Bengal] +2°2) +3°8) +45] +3°3) —40,| —0°2} +1°7| —0°2| —2°7 Orissa... wef #43) 43°38) +4°7/ 45:1] -04) —4°3) 4+2°6] 4+2°7/ —1°3 Circars ..[ +3°8) 40°6 41-7) +06) +16) —2°8)-—3°]) 41:2) +15 Akyab «| +0°8) +1°9) +16) -—0°8) —0°8 00} —2:3) —4°6} —0'8 Diamond Island ...} +1°6) +2:1) +2°6) +29) +3:°4) 43:4) +382) +40) +2°5 Tables V (a) to VIII (a) are arranged to show the westerly move- ment of the disturbance and give the pressure and temperature changes and variations for Northern India from Assam on the east to the Pun- jab and Kashmir on the west. 1903. | C. Little—On two remarkable rain-bursts in Bengal. 33 Table V (a) shows that the fall of pressure was general over Nor- thern India on the 28th and on the 29th, and that the changes on those days give no indication of progressive movement; but on the 30th the recovery is shown as almost complete in Assam and North Bengal ; part- ly complete in Bihar, beginning in the United Provinces and not yet be- gun in the Punjab. That is the only clear indication, of the westerly progressive movement given by the pressure changes. TABLE V (a). Giving the pressure change daily from June 27th to July 5th, arranged to show the westward movement of the disturbance. June | June | June | June | July | July | July | July | July 2 3 4 5 27 28 29 30 1 Assam eee | —'012”| —°080”| —'026”| + 041”) + :006”| —°013”| + 038”) + °053”| + °024” North Bengal | —‘009} —-073] —:083} +096) —.006| —°009|} +:'027) +°040) +029 Bihar eee | —'020| —°085) —°064; +°069) +°041) +°032} —°009) +°032) — O21 United Provinces ... | --'026} —°096} —°055} +°015} +°082) —°013) +°019) +°031| —‘031 Punjab «. | —'022| —°117| —:061] —:008} +°028} —'030) +°091) +°051) —°017 Srinagar, etc. | —‘006) —°093} —‘045) +°026) —-004) —°057/ +024) +-°021) +°005 TaBLeE VI (a). Giving the pressure variation from the normal from June 27th to July 5th, arranged to show the westward movement of the disturbance. June | June | June | June | July July July July | July 27 28 29 30 1 2 3 4, 5 eet ee ee ee ee . Assam .,.. |+°111”| +°034”|—'002”| + °045”/+°047”| +4°029”| +°055”|+4-112”|+°189” North Bengal +°115) +°040!) —°041] + 049) +°047 +°036 +°064) +°108} +°133. Bihar... | +'097| +°010) —°049} +:°008} +°046 +:°071 +°065) +°101) +°082 United Pro- vinces +°138! +:°043}) —'009) +:°005) +°079 +°062| +-°076) +°106) +°075 Punjab ... | +°182) +°074| +°019) +°012) +°036|/(?) —°005|(?) +°077| +°123) +°107 Srinagar +°172) +°074) —‘002| +:°045) +°041 —'003) +°015) +:065| +°046 Leh eo» | +9153} +°073) +°053) +°070) +°059 +°007| +°017) +:017} 000: 34 C. Little—On two remarkable rain-bursts in Bengal. [ No. 2, Table Vi (a) shows that on the 27th there was a large excess in pres- sure over the whole of Northern India and that the excess was greatest in the Punjab and Kashmir. During the two following days this ex- cess disappeared except at Leh and before the end of the period covered by the table the old excess pressures were restored except at the high level stations. Leh which is the highest of all the hill stations given in the Indian Daily Weather Report was the only station on the 4th and Sth July, for which pressure was not in moderate to large excess. The westward progress of the temperature change is clearly shown by tables VII (a) and VILL (a). The rapid fall of temperature, which began on June 29th in Assam is most marked in North Bengal on the 30th, in Bihar on July Ist, in the United Provinces on the 2nd and 38rd, in the Punjab on the 2nd to 4th, and in Kashmir on the 5th. Tasce VII (a). Giving the temperature change daily from June 27th to July 5th, arranged to show the westward movement of the disturbance. June | June | June| June | July | July | July |! July | July 27 28 29 30 I 2 3 4 5 a | | fe | Assam wee | $2°4°} —0°2°|—2°7°| —3 2°/4+ 3°3| +1°3°] +0°87 4+0°5°| —1°6° North Bengal... | +2°5 | ~1'2 | -18 | —2°3] —1°6 | +4°4) —02 | —1°5 | +18 Bihar ... ... | -06 | +06 | ~0°3 | —0°5 | ~5°2) -1°3 | —26 |/4+1°7 | —0°3 United Provinces | +1°2 |] +19 | +06 | +24 |—17 | —-4°0) —53 |+0°6 | —0°8 Punjab | $255 | +33 | +22 | +3°2 | +10 | —6'4| —3'1 | —4°9 | +29 Srinagar, etc. ..| +0°5 | +45/+3:0/+07|+4+04)] OO] -—16/ -15 | —47 Taste VIII (a). Giving the temperature variation from the normal from June 27th to July Sth, arranged to show the westward movement of the disturbance. June | June | June | June} July | July | July | July | July 27 28 29 30 1 2 3 4, 5 Assam we | +0°8°| 40°3°] —2°0°|—5°7°| —29°) —0 5° +0°7°| +0°4°] —0°9° North Bengal ...| + 2:2) +1°2) —0°8} — 3:1) —5°5) —0O7| -—1°3] —2-7| —0°4 Bihar | + 69) 47:8) +78 + 73) +26) 41°41 ~—1°2) 405) +0°4 United Provinces | + 46) +69] +7°8] +10°4| +88) +49) —O°2} +05] —0'3 Punjab | — 29; +07) +3:2) + 6°7] +80) 41:8) —1:2} —5°9| —31 Srinagar | — 65) —1:9) 42:1) + 12) +1°9) —1:3| —4°4) —2°0) —5:°1 Leh ...|—110} —3-6| —0-6| — 00] —1-0| —1:4| +1:1] —2°1| —5°7 1903.7 C, Little—On two remarkable rain-bursts in Bengal. 35 From Table VIII (a) it can be seen that the lowest temperature in Assam was on June 30th, in North Bengal on July Ist, in Bihar and the United Provinces on the 3rd, in the Punjab on the 4th, and in Kashmir on the 5th. The very low temperatures which are shown at Srinagar and Leh on the 27th were connected with conditions, then pre- vailing in Western India, and have no connection with the disturbance or series of disturbances which I have been discussing. A very strixing feature of Table VIII (a) is the large fall of tem- perature in Northern India between June 30th and July 4th. In the United Provinces the change was from an excess of 10° on the 30th to a small defect on the 8rd, and in the Punjab from excess of 8° on July Ist to defect of 5°9 on the 4th. TaBLE IX (a). Rainfall. (June 27th to July 4th). 3 E June | June| June | June | July | July | July | July Ss E 27 28 29 30 1 | 2 3 4 SEC) EM WSR METIS a Een) Seemed ore Oe ares Assam 5 | 310) 2°47; 6°28} 8°06) 0°89 5:59) 0°04 3°91 North Béizal ee here 2°12| 654) 10°68) 14°28; 2:20 0:10) 3°85) 3°77 East Bengal 5 ae A be! jac 17 taht ae 1°60) 26°41) 3°92 9-46 2°10} 6°70 South-West Bengal} 9/| 093] 0°36) 0°37; 2°51} 1°72) OO1| 2°09) 16°31 Bihar ... Ractpokar iy! Ouge ©. 6 is 2°02} 0°67) 8°85) 2°78) 2°24 United Provinces... | 12 | : 0°79| 8°14) 4°46] 7°01 Punjab aie! was a of. cee 1°81; 0°47; 3°12) 1°56 Simla Hills 5 | 0:04 0°17; 0°85) 6°49] 5°92 Kashmir G)., C708 0°62; 0°49) 0:35) 0°46) O°91 Darjeeling a3 eee 0:04 0°85 0°26 1°69} 0°02) O35; .1°49 Clierrapoonjee ... | «.. | os. 0°51] 3°68 4°66} 015) O05) 1°22} 5°61 Orissa 4 8°76) 1:12) O°07|. 0°46 Circars 4 | O35) O44... foe 1) HD GD) ATO] J; 11-6 36 CO, Little—-On two remarkable vain-bursts in Bengal. [No. 2, TABLE X (a). Rainfall. Siations.| 30th Jane. | 20! Jane. | go's, | Total | | | Assam ia 5 11°85 | 8°06 | 10°43 30°34 North Bengal | ‘f 19°34 | 14°28 9°92 43°54 Kast Bengal _.., | vi 911 | 26°41 | 22:18 57°70 South-West Bengall 9 1°66 | 2°51 20'138 24°30 Bihar ey CRE 0°64 ~ 2:02 14°54 17:20 United Provinces Le | alia taal, Pome 15°40 15°40 Panjab oe Gi TG Sows : 6°96 6°96 Simla Hills =f a 0°04 : 13°43 13°47 Kashmir a 6 0°07 0°62 2°21 2°90 Darjeeling ... | a Lis | 1°69 1-86 4°70 Cherrapoonjee ... one 4°19 | 4:66 7°03 15°88 Orissa oat Aixsill ui Fasten say NL Pees : 10°41 10°41 Circars i 4, 0°79 siete 861 9°40 In Tables IX (a) and X (a), I have given the rainfall in Northern India, for the period June 27th to July 4th. They are similar, to those which precede as to divisions of the country. The figures I have obtained | by merely adding up the rainfall recorded at the various stations in each division and the stations which I have taken, are those given in the ~ Indian Daily Weather Report. In the first column of each of these Tables the number of stations is given so that the average rainfall for each day or for a group of days so far as it depends on the records of the stations selected can be obtained by dividing by that number. The heavy rainfall in Hast Bengal on the 27th June, has no connection, so far as I can see with the general disturbance which culminated in the down-pour in Hast and North Bengal on the 30th. Setting that item aside it will be seen that in Assam and North Bengal, the rainfall stead- ily increased between the 27th and the 30th, and that the dates of heaviest rainfall were the 29th and 30th. Proceeding southward from North Bengal the dates of heaviest rainfall are Hast Bengal June 30th, South-West Bengal June 30th and July Ist, Orissa July 1st, and the 03.] C. Little—On two remarkable rain-bursts in Bengal. 37 Circars July 2nd. Going westward we see that before June 30th, Bihar was practically rainless, and that there was no rain in the United Pro- vinces, Punjab, and the Simla Hills, until July lst. The dates of heavi- est falls are July 2nd in Bihar, the 2nd and 3rd in the United Pro- vinces, the 3rd in the Punjab, and the 3rd and 4th in the Simla Hills. In Table X (a) I have merely added together the columns for the days 27th, 28th, and 29th, with the heading “ before 30th June” and the columns for the days July 1st to 4th with the heading “ after 30th June.” It will be seen that the heaviest falls occurred before the 30th June in Assam and Bengal, and after the 30th June in Lower Bengal, Orissa, the Circars and over the whole of North-Western India. In addition to the provinces and divisions in the Table, I have given the rainfall at Darjeeling and Cherrapoonjee. The rainfall at these two stations agrees only partially with what is given for the plains of Ben- gal and Assam; and there is a striking difference between the falls at these places for the two disturbances. With the June storm, rainfall was comparatively light at both Darjeeling and Cherrapoonjee, while in August it was very heavy at both. There appears to me to be no want of evidence, in the above Tables, in favour of the view that an atmospheric disturbance invaded India from the north-east, at the end of June. I may, however, give one or two further items of information showing the south-westward direction of progress over Bengal. They are only stray items, but they will indi- cate to some extent how the meteorological record might be improved, if there were some fore-knowledge of coming events and of the direction from which change should be looked for. As the disturbance advanced over Bengal, thunderstorms probably occurred at places in succession. If so the fact has not been recorded. But I saw in the newspapers that a local storm of great severity had occurred between Nalhati and Rampur Hat, on June 29th, and I have ascertained that the hour when it overturned a train on that part of the E.I. Railway was between 3 and 4 o'clock in the afternoon. I person- ally observed the changes, as the wave passed over Calcutta, on the morning of the 30th and the traces of the self-recording apparatus, at the Alipore Observatory, show that it began aboub 4 a.m. on that date and was practically over by 10 a.m. When the weather was becoming more settled at Calcutta, that is about 10 a.m. I received a telegram from the observer at Saugor Island that weather was very unsettled there, that the barometer had fallen two-tenths of an inch, and that the wind was blowing 44 miles an hour. The following day I heard from a Calcutta resident who had just arrived from Madras that while the train on the East Coast Railway was passing through Orisga on the 38 C. Little—On two remarkable rain-bursts in Bengal. [No. 2, night of the 80th, they had experienced very severe thunderstorms, with most vivid lightning. Though these are only stray facts, they indicate very clearly how the disturbance was advancing. TABLE. ee eee Place. Hour and date of local storm. Rampur Hat... ace «e-| 38-00 P.M., June 29th. Calcutta oie dine ---| 6-0 A.M, to 8 A.M., June 80th. Saugor Island ee ---| About 10 a.m., June 30th. Orissa ave poe ...| About midnight, June 80th. The following Tuble gives the hourly changes of pressure from the barograph at Alipore Observatory, on June 30th. Hourly pressure at Alipore corrected for instrumental errors and reduced to 82° Fah. Juve 80th. Actual pressure. | Peer Change. - | 4 AM. sei = | 20580” 29548” —-009” Se ipabiers a ta 568 549 +014 ee ii | "5BB 560 +028 Ee oA 633 576 +°057 ives ee vs 597 592 +005 dae at 646 ‘602 +044 Ais, : 658 ‘613 +045 1,’ ie er ae ‘598 +001 ie ae a: 678. > | 585 —-007 The Table shows that at 4 a.m. pressure was normal, that consider- able oscillations occurred between that hour and 11 a.m. (a rise followed bya fall) and that at noon the difference from the normal was the same as it had been at 4 a.m. ‘The general appearance of the part of the trace from which the above measurements were taken is irregular and jagged without any marked sign of a depression, that is, the trace is of the kind characteristic of the passage of nor’westers in the hot season. The temperature changes show a steady decline from 4 a.m. until noon. The change, though not quite regular, is not of the sudden cha- 1903.] © Little—On two remarkable rain-bursts in Bengal. 39 racter of the fall accompanying thunderstorms. It was continuously falling throughout the period and that at a time, it may be observed, when in ordinary weather temperature is rising with the advancing day. Table giving temperature changes at Alipore observatory in degrees Fahrenhett. On June 30th, aca tne Difference. 4 A.M. er sae 85°°2 <> (SG7- + 4°°5 le sae sa 83°0 811 +19 a Ke i 82°8 83:5 -07 o> 5; visa Fe 79°5 86'2 —67 = 5; iu As 78'5- 87°5 re —9°0 The last column of the Tabie shows the large change of tein- perature which occurred between 4 a.m. and noon on the 30th June at Calcutta. It also shows indirectly how scanty, comparatively, would have been the information if the record had been limited to what is usually noted at 8 a.m. The temperature at that hour was practically normal. Storm of August 11th. The Tables containing the information for the August disturbance have been prepared in the same way as those for the preceding storm and are given below in the same serial order for purposes of com- parison. I stated in discussing the earlier storm that the pressure changes give an imperfect indication of the line of advance of the wave of change. From Tables I (b), II (b), V (b) and VI (0) it will be seen that the fall of pressure began in North Bengal on August 9th, that it extended southward over Bengal Proper and Orissa and westward as far as the Punjab on the 10th; and that while pressure was beginning to recover in North-Hast India on the 11th it was still falling in the United Provinces, the Punjab and Kashmir. The fall on the 11th, was very rapid at Teheran (‘175’) and Ispahan (°150’’), showing that the centre of the wave had passed westward beyond the Indian region. The rapidity of this westerly movement is very little less than that of the earlier disturbance, and would probably have eluded observation if it had not been for the larger fall. The fall is first shown on the 9th in the north-east, and within 48 hours has passed far beyond the western boundary of India. The movement is also shown by the recovery. 40 C. Little—On two remarkable rain-bursts in Bengal. [No. 2, which began on the 11th in Assam, and North Bengal, was rapid in North- Western India on the 12th and at Jask, Quetta, etc., on the 13th. TasLe I (6). Giving the pressure changes daily from August 8th to 14th, arranged to show the southward movement of the disturbance. | August | August | August | August | August | August ; August 8 9 10 1l 12 13 14, Assam = +:°040” | +°004” | ~°0438” | +:019” | +°022” | —:019” | —°019” North Bengal ...| +°057 | —°025 | —:087 | +°'037/ +:059| —-018 | —‘010 East Bengal ...| +°067 | +°003 | —‘061 | -—°003 | +°052 | —:020; —‘025 South-West Bengal} +°050 | +°006 | ~—'065 | +°'050 | +°039 | —‘025/ —‘018 Orissa ve | +°051 | +°044 | —'048 ) +4+°013 | 4+°052 | —'024 |} —'048 Circars we | +°049 | +°054 | —'009 | —'017 | +°049 | ~°022 | —'O51 Akyab | +°062 | +°028 | —'021 | —*043 | +°008} +:°011 | —-062 Diamond Island... | +°055 | +°014 | —'016; —:051 | +°019 | -—‘003 | —°‘057 Winds at Diamond Island varied between south-west and west- north-west and showed no signs of becoming easterly. Taste IT (b). Giving the pressure variation from the normal from August 8th to 14th, arranged to show the southward movement of the disturbance. ] August | August | August | August | August | August | August 8 9 10 11 12 13 14 Assam | +056" | +°052” | —-007” | +004” | +-028” | +'010” | —-018” North Bengal ...| +°075 | +°040 | ~—°051 | —‘019 | +°034 | +:°016 | +°006 East Bengal ... | +°O079 | +°075 | +:°006 000 +°053 | +°027 | +:003 South-West Bengal) +°066 | +°071 000 | +043 | +080 | +:049 |} + 028 Orissa | +:060 | +°104 | +°053 | 4+:°069 | +:124 | +°087 | +-041 Circars fe +°032 | +°085 | 4+°072 | +°054 |) +°102 | +°078 | +-024 Akyab .. | $066 | +:091 | +°066 | +°020 | +°025 | 4+°0382 | —‘034 Diamond Island...| +°055 | +°066 |. +°047 | —°GO7 | +°010 | +°004 | —'055 1903.] . CO. Little—On two remarkable rain-bursts in Bengal. 41 TabLe III (6). Giving the temperature changes daily from August 8th to 14th, arranged to show the southward movement of the disturbance. August | August | August | August | August | August | August 8 9 10 11 12 13 14, Assam | 338° | -0-7° | - 2°89 | -2°9° | -06° |) +3:5°] +2°8° North Bengal .., —0'6 —1°9 —0°4 | -—3°4 —l1 +3°3 | +1°5 Kast Bengal __.. —16 +0°2 +06 | —3°9 —07 +3°9 +0°7 South-West Bengal] —03 —0°6 +05 | —5°6 +11) +445 +0°2 Orissa oc] 14 + 0-2 +09} —1°8 —0°3 +18 +13 Circars aes +1°8 —0°4 —1°4 +10 0-0 —01 + 1°2 Akyab eee +1:0 +2°5 +0°8 +02 | —07 —2°8 +1°5 TaBLe IV (b). Giving the temperature variation from the normal from August 8th to 14th, arranged to show the southward movement of the disturbance, August | August | August | Angust | August | August | August 8 9 10 ll 12 13 14 mem | Assam we | —O7°}] -08° | —3:7° | —6°4° | —6°8° —1°3° North Bengal ... +2°1 +0°4 +01) —3'2 Lato +0°2 Hast Bengal _,., +05 +0°7 +13] —2°5 | —38°2 +1°2 South-West Bengal} +2'4 + 2°0 +25) - 3:1) —2°1 +2°6 Orissa CEN S08 122-4 E10) = S23" 260-8 | +0°2 +3°6 Circars ake ST | O8.| 409) +30 /.,429 $41 Akyab wel O02] 424) 432) 436) 427 +1°5 4.2 C. Little—On two remarkable rain-bursts in Bengal. [No. 2, TasLe V (0b). Giving the pressure change daily from August 8th to 14th, arranged to show the westward movement of the disturbance. | August | August | August August | August | August | August 8 9 10 | Liab 12 13 14 Assam ~ aoe | +040” | 4°004” | —043” | +°019” | 4+°022” | —°019” | —*019” North Bengal +°057 | —"025 | —‘087 | +:037 | +°059 | —°018 —‘010 Bihar oo | +°086 | +°012 | —-078 | —-009 | +°102 — 022} —'017 United Provinces | +-004 | +°060 | =101 | —-077) +°144| 4-024 | —-036 Punjab —-025 | +056 |-—-u85 | — 103 | +'212| +-041 | —-040 Srinagar, etc. ...| —007 | —-008 | "086 | 087 | +130 | +089 | +°002 Tasue VI (0); Giving the pressure variation from the normal from August 8th to 14th, arranged to show the westward movement of the disturbance. August | August} August} Augnust| August | August | August 8 9 10 11 12 13 14 Assam wee | $056” | 4-052” | —-007” | +°004” | +028” | +°010” | —:013” North Bengal ...| +°075 | +°0/0 | ~—°051 i 019 +'034 | +°'016 | +:006 Bihar | +045 | +:°048 | —'088 | —°041 | +4°050 | +:'029 | +:010 - United Provinces | + 027 | +°'080 | —'022 |} —'100} +4°0385 | +°054 |] +:°015 Punjab sen O80 +046 | —-041 | —*153 | 4+°035 |} +°078| +°040 Srinagar | +°004 | +025 = 031 |. —"180 | +°055 | +°187 | +:°106 Leh ... | +059 | +°038 | —-047 | —145 | —052| +-049 | +-045 It is not a matter of much importance in connection with this paper, whether local variations occurred while the above changes were in progress. What I have attempted is to establish the general pro- gress of the disturbance, pointing out that the part of India first affected was the north or north-east and that from the place of first contact the line of advance was southward and westward. The Tables for the second disturbance are very similar to those of the earlier one 1903. | C. Little—On two remarkable rain-bursts in Bengal. 43 and I propose commenting very briefly on the figures they contain, Tables III (b) and IV (0b) give the temperature changes, and variation indicating the southward movement, and VII (b) and VIII (0) are similar Tables for the westward movement. Tasie VII (0). Giving the temperature changes daily from August 8th to 14th, arrunged to show the westward movement of the disturbance. August | Angust'| August | August | August | August | August 8 < 10 1l | 12 13 14 - EeSbae ee [aca ES 8 aon Assam ao | —~33° | ~o-7° | =2°8° | —2*9 | “—o-6° | 435° | 28° North Bengal ... | —0'6 460 — 0.4 | ~3'4 |) —-1L1l +33 +15 Bihar | +07 —10 -—0O'7 | -2°8 | -02 +3°0 +0'1 United Provinces +1°8 — 25 rae pea | = 1°4 +1°0 | +1°5 Panjab as +31 +02 -—19 =O) | =5°6: | —2°6 +3'3 Srinagar, etc. .. +2°5 +1] +03 | —3°0 | -—7°8 | —5°4 —0°2 Tasie VIII (0). Giving the temperature variation from the normal from August 8th to l4th, arranged to show the westward movement of the disturbance. August | August | August | August | August | August | August 8 9 10 11 12 13 14 Assam ae | —O77° | =—0°8° | —3°7° | —6t4° | —6°8° | —3'4" | =1°3* North Bengal ... +2'1 + 0°4 +0'1 —32 |] —4°0 —0'9 +02 Bihar Ate +2°9 +19 +13 —1'4 —1'2 +1°8 +18 United Provinces + 2°4, —-0O') —0'6 +15 + 0:2 +1°2 + 2°8 Punjab = +7:0 +72 +55 + 4°9 —1:0 -—3°5) —0°1 Srinagar eee +41 + 4'9 +49 | +452 —3'4|-10°5 |-10°7 Leh | 409} 4¢23| +20| -14| -7:5|/-14°9] —9-7 44, C, Littleh—On two remarkable rain-bursts-in Bengal. [No. 2, The southerly movement is less marked than was the case in June. The fall of temperature began in Assam on the 10th, it extended to Bengal Proper on the 11th, and there was a slight fall in Orissa also on that date. But unlike the earlier disturbance, mean temperature did not fall below the normal in Orissa, and in the Circars temperature con- tinued high throughout the period. From Tables VII (b) and VIII (0) it may be seen that the fall of temperature which began in Assam on the 10th, and North Bengal on the 11th, occurred in Bihar on the I1th, and in the United Provinces, Punjab, and Kashmir on the 12th. From Table VIII (6) in which the variation from the normal is given it may be seen that there was a very large defect in Assam on the 11th and 12th, and at Srinagar and Leh on the 15th and 14th. The rainfall Tables IX (b) and X (b) show as before the heavy rain- fall in Bengal Proper on the 11th, the heavy rain in Assam on the previous day the L0th, and that the days of heavy rainfall in the west of India were the L2th and 15th. PApiE PX ¢b): Rainfall (August 8th to L4th). August | August _ August | August | August | August | August 8 9 \, oO 11 12 13 14 Assam ..| 328| 707 | 18°78 | 12°40/13°38| 1-97] ovo North Bengal ...| 2¢9/ 324/15°53/29°43] 9:38] 219] 426 fast Bengal ... 2°63 679 | 1:62 | 28°71 9°03 4°04 1:15 South-west Bengal} 117] 055) 3383/1511] 228! 0:93] 0-25 Bihar | 180] 655} 619/12°94| 310| 444] 092 United Provinces Thigh 1:38 | 5°24 1°32 ail 0°32 0-01 Panjaub ee =2 005 | 1°81 | 1°81 | -o82] — Simla Hills ...{ o16| 721) 109| 206! 862) 3-59] one Kashmir an 0-43 -= | 0:03 | 1:05 249 1-02 0°52 Darjeeling er 0-79 0:12 | 1°01 7°91 1°35 017 O-ll Cherrapoonjee ... 2:09 4:08 | 28°69 | 22°71 4°25 169 0°18 © o 1903. | C. Little—On two remarkable rain-bursts in Bengal, 45 Tapte X (b) — Rainfall, eee A hg eee lth August. iieaeee Assam... a e 5 29°08 12°40 16°05 North Bengal... ite ifalipeez 20°86 29°48 15°83 East Bengal hee roa Ceony: 11'C4 23°71 14°22 South-west Bengal ... (2 9 5°05 25" 1) 3°46 Bihar i | 18] 1864 | 12°94. 8-46 United Provinces ... an | 12 | 14°39 | 1+32 0'33 Punjaub ... ay a Bi scub EGON ewabiess caval 2°13 Simla Hills ee ef eter eS Sete 206 12°37 Kashmir ee ae Pr mOres he GR 4°03 Darjeeling 3 SSB My aniedp ore oaiman 1°63 Cherrapoonjee or Fe ca | 34°86 22°71 6°12 Orissa... 9 of: | 4 — as Circars .., ae re | 4 | — | ~~ — It may also be seen that the rainfall was much more heavy at Dar- jeeling and Shillong thanin June. At Darjeeling on the 11th nearly 8 inches fell, more than double the total fall for the three preceding and the three following days put together. At Cherrapoonjce 50 inches fell on the 10th and 11th taken together. The only sensational incidents I have heard of in connection with this later storm were landslips in the Hills and heavy flooding of the rivers as the rainfall extended westward along the Himalayas. If a comparison be made of the two sets of Tables, it will be scen that in many important respects the resemblance is as striking as two sets of meteorological Tables could almost be expected to be. The wave of pressure change in each case passed very rapidly, so much so that it is difficult to show the line of advance by the sequence of changes. The fall and the recovery were much greater in Western India in the latter than in the former. In each case the fall of temperature can be traced from Hast to West, but in the June storm the sequence is more complete 46 C. Littleh—On two remarkable rain-bursts in Bengal. [No. 2, because of the change from intense hot weather in Bihar, the United Provinces and the Punjaub, to thecooler weather of the monsoon season. Though the intermediate changes of temperature are less marked in August, there is abundant evidence of the line of advance of the wave of change ;and the low temperature in Assam onthe ilth and 12th, followed after an interval of two days by what may be called wintry weather in Kashmir, affords a succession of events which it would be difficult to account for, except on the supposition of a westward-moving atmospheric disturbance. But in my opinion the most striking simila- rity in connection with these two disturbances is afforded by the heavy general rainfall in Bengal Proper on the 30th June and the 11th August. In the latter case particularly, it is obvious that no disturbance entered Bengal from the Bay, which had been singularly calm throughout the week from the 8th to the 14th August. The wind direction at Dia- _mond Island was westerly throughout the period, and velocity day by day was below the average for the season. In both cases, as shown by the following Table, there was considerable increase of wind force at Saugor Island ; but the direction continued south-westerly, showing that the change was due to some influence to the north, and the record of the Pilot Brig shows that the strong winds extended to no great distance southward from the Bengal coast. Table giving the wind force and direction at Saugor Island during the two periods of disturbed weather. a a ¢ i * sane | aly inggitin gg, Bay elas! Wi reo | ae 27 312 a's.wei 1 elie 360 S.W. 28 | 408 ssw. | 9 b+ > B04 S.9.W. og | 876 s3.w.. |} 10 +) 768 | S. 30 | ~ 840 oH hy Ae 394 9 yy eee July. | | | j 360 W.S.W. io. -4 288 S.W. 2 | 456 SW. | 4B > 884 | W.S.W. 3 384 Saw. Seer) 420 W.N.W. { One difference which may be noted, as shown by the above Table, is that the highest velocity in the earlier disturbance occurred at Saugor 1903. ] C. Little—On two remarkable rain-bursts in Bengal. 47 Island between the 10th and 11th, that is along with the heavy rainfall . in Bengal Proper, whereas in the later disturbance it was between the 9th and lOth, or before the heavy rainfall. In other respects the resem- blance is very striking, and the Table shows that with the fall of pres- sure in the north, the south-westerly wind increased and continued to increase until the recovery of pressure was complete. There is no sign with either disturbance of the northerly winds which invariably accom- pany a disturbance over the Bay. Mr. C. C. Collingwood who was in command of the P.V. “ Alice” at the Sandheads informs me that, from the 29th June to the 1st July, the brig was under way all the time, and that work went on as usual ; also that there was very little sea-set. The weather was bright and clear, except from 8 a.m. of the 30th June to 10 a.m. of the Ist July. The following extract from the log for June 30th is given in full, because it shows the time at which the disturbance which passed over Bengal south-westward commenced at the Pilot Brig. Extract from the log of the P.V. “ Alice”’ stationed at the Sandheads June 30th. Hour. Pressure. | Temperature. ian enn Wind force. Weather. 2 29°66” 88° S.W. 3 be 4 "63 88 S.W. x W. 4 be 6 “GAT 88 S.W. 3°4 be 8 73 89 S.W 3 oc 10 78 82 os Wie 1°2 ocqlt 12 76 80 W.N.W 3'4 oc 14 74 | 81 E.S.E 1 Oo 16 ‘66 | 84. S,S.E, 1 | fe) 18 66 84. | S. 3 | ocqlt 20 68 83 W. 3° ocl 22 72 83 S.W. 2°3 ocl 24 68 83 S.W. x W. 1°2 | ocd 48 C. Little—On two remarkable rain-bursts in Bengal, —[No. 2, The change of temperature shows that the disturbance which had begun at 4 A.M. in Calcutta, reached the Pilot Brig between 8 and 10 a.M., and the column giving wind force shows that nothing more than a moderate breeze was experienced. The increase of cloud began about 8 a.M., and the sky was more or less overcast during the day. Part TH, In the preceding, which I have called Part II, I have considered only the weather changes, as they are indicated chiefly by the & a.m. ob- servations from day to day during the period of disturbance. These are of sufficient interest to justify their separate consideration. But the two storms, which in what follows’ I shall represent by the dates June 30th and August 11th, appear to me to have caused a change so striking in the atmospheric conditions over Northern India, that those dates become punctuation marks in the monsoon season of 1902. The expression “ punctuation marks ” inadequately conveys my full mean- ing, and I would perhaps indicate more clearly the importance of the changes which then took place if I say that new chapters begin with those dates. Itis impossible in the space which I now have at my dis- posal to go fully into the wider question which I am attempting to open out, even if J had the material ready. But I will indicate briefly the » general run of the argument in order to form a line of connection with some future effort in this direction. A study of the monsoon season of 1902 falls naturally into four periods :— A—From the beginning up to the end of June, that is until the first Himalayan storm occurred. B—From the 30th June to the llth August, that is, from the first | Himalayan storm up to the beginning of the second. C—The three to four weeks which follow the 11th August, and during which the ‘remarkable series of storms’ moved from the Bay of Bengal north-westward to the extreme _ west of India. D—The remaining part of the season, which I consider began with the storm which early in September broke up over the south-west of the Province instead of moving west- ward as the various members of the ‘ remarkable series ’ did. | During each of these periods we have a well-defined behaviour of the cyclonic storms, and a well-defined distribution of rainfall. Also the connection between the line of advance of the storms and the prevalence of monsoon conditions is so striking that the study of the 1Q03. | ©. Little—On two remarkable rain-bursts in Bengal. 4,9 monsoon is reduced to an enquiry why a cyclonic storm should move from the Bay of Bengal in one direction at one time of the year, and in another direction a» week or two later; why it may be for several weeks at a time the prominent features of these storms are, more especially as regards the line of advance, repeated with but little varia- tion; and why there should come without warning by ground level instruments a marked change in the line of advance. In ordinary years cyclonic storms move westward, or slightly to the north of west! from the beginning of the monsoon season, and while they follow the usual direction there is no want of rain in any part of Northern India. During the past five years cyclonic storms have been very far from following the usual course, that is the course which the previous fifteen or twenty years’ experience had shown to be the usual course. For instance, in 1899 the recurving was very marked, especially in August and September; and there being no ‘remarkable series of storms’ such as occurred during the past year, the crops failed over wide areas in Western and Central India. Several storms developed in 1899 over the Bay at the most critical time, that is August, and began to move westward ; but in every case their advance was checked over the Central Provinces, and they recurved towards Bengal, where in conse- quence rain fell in abundance. Contrast the past year with 1899, and the main difference will be found in the behaviour of the cyclonic storms in the latter part of August and the early part of September. No one who is interested in crops and rainfall can have forgotten how critical the condition had become in the west of India in August 1902; and how it was a question of days whether or uot there would be a repetition of the disasters of 1899; and that just when it was not too late the change came, and came with the first of that ‘remarkable series of storms’ which was in the west of the Bay on the 19th of Augyst and over the north-west dry area and Guzerat on the 22nd. Two more storms followed the same course at intervals of about a week, crossing the area of drought and giving plentiful rainfall where it was most needed. The difference between the years 1899 and 1902 is that the storms of the second-half of August and first part of September in former 1 In page 173 of the Hand-Book of Cyclonic Storms in the Bay of Bengal, Second Edition, Sir John Eliot says regarding cyclonic storms in July :—‘‘ The charts shew that all the 39 storms which formed in the Bay during this month, in the period 1877-99, marched in west or west-north-west directions across the north-west angle of the Bay; and the centres of all with about six exceptions crossed the coast between Saugor Island and Gopalpur. In the great majority of cases they after- wards advanced across the head of the Peninsula into Sind, Guzerat or Raj- putana. 50 C, Little—On two remarkable rain-bursts in Bengal. (No. 2, year recurved over Central India and in the latter year they did not. And so it appears to me that this matter of the motion of cyclonic storms over Northern India is one urgently requiring explanation, and ~ that so long as it is unknown in what direction a storm will move in the immediate future so long will the distribution of rainfall be a subject of speculation only. So great a difference as we find between the directions of motion of storms in the four periods of the past monsoon season must be due to well-defined causes which it must be possible to determine, The only point on which I feel any certainty is that these causes will not be determined by ground level observations. To me it appears much more likely that they are connected with overhead condi- tions, and the past season indicates that the cause may be found in an overhead current from the west, that is in its height and strength. This current is the main current over Northern India during the cold season and the early part of the hot season. It retreats upwards with the approach of the monsoon season and my opinion is that monsoon con- ditions cannot be established in Northern India so long as its strength is unimpaired. The only effects which I am aware of as giving some indication of the strength of that current late in the season are the occurrence of late snowfall in the hills, and of late nor’westers in Bengal such as were experienced in June of last year. It is well known that for some years late snowfall in the hills has been put forward as indicating the late arrival of the monsoon, but I am not aware that there has been any connection established between the snowfall and the strength of the westerly overhead current. The reason for this doubtless is the great difficulty always experienced in any attempt to investigate the higher — levels of the atmosphere—a difficulty which is not to any extent removed by the establishment of observatories on ranges of high hills. It has come to be recognised by meteorologists that a high level observatory must be placed on the top of an isolated peak; otherwise the local irregularities of the ground, such as the spurs and valleys of the Himalayas, cause deviations in the record and the result is misleading. I have divided the monsoon season of 1902 into four periods—June 30th being the division between the first and second and August 11th between the second and third of these periods—and I will now state generally the line of advance of depressions from the Bay of Bengal during these periods. Pertop A. In May a depression entered Burma, moving in a north-easterly — direction, the usual one at that time of the year. In June there was at 1903.) O, Little—On two remarkable rain-bursts in Bengal. oe times a tendency to the formation of depressions over the north-of the Bay, but it was temporary except about the 11th June, when the slight depression which then formed moved northwards into Bengal proper. The usual direction in which depressions advance in the middle of | June is north-westward, and it is a fact worth noting that last year the depression which in ordinary years would have been followed by mon- soon conditions over north-western India, moved into North Bengal instead, and that the monsoon weather was confined to Bengal Proper and Assam. Pertop B. Two storms occurred during this period. They followed an almost identical course into Central India and then recurved towards the Kumaon Hills. The following extracts from the Indian Daily Weather Report give the opinions recorded at the time regarding the change of motion and the place where it occurred. (July 17th. “The cyclonic storm will probably continue : to advance in a_ west-north-westerly direction.” July 18th. ‘The cyclonic storm from the Bay instead of continuing a westerly course has been almost stationary, and is apparently recurving to the north.” July 19th. “The storm is apparently advancing to- ( wards the Kumaon Himalayas.” lst storm of Period B. It may be noted that the change of direction which occurred between the 17th and 18th was not anticipated, showing that the information supplied by the ground level observations was not sufficient to settle the direction beforehand. (July 30th. “The cyclonic storm has continued to ad- | | vance slowly in a west-north-westerly direction and is now apparently central near Nowgong.” ond storm of | July 3lst. ‘The cyclonic storm in the Central India Pescd B. Plateau has been almost stationary | during the past day, which may be an indication that it is abont to change its direction of advance. — Aug. Ist. ‘The cyclonic storm is apparently advanc- t ing to the Kumaon Himalayas.” The course is shown by the above extracts to be the same as in the preceding storm and it is also seen that the experience gained from the J. mu. 8 | 52 C, Little—On two remarkable rain-bursts in Bengal. [No. 2, earlier storm made it possible on July 31st to anticipate to some extent the change of direction. Periop C. A single extract from the Indian Daily Weather Keport, of Septem- ber 4th, will give the necessary information regarding the storms of this period. “The present storm is the third of a remarkable series of storms which have formed in the Bay since the 19th August and have followed an almost identical course.” The first storm was over Guzerat or the north-west dry area, on August 22nd, the second on August 28th, and the third on September ord. Perron D. What appeared to be a fourth in the above series was over the north-west of the Bay, on September 5th, and was expected to advance into the east of the Central Provinces during the next thirty-six hours, but it moved northwards, and on September 8th and 9th became diffused over West Bengal and the adjacent part of CentralIndia. The following extracts are taken from the Indian Daily Weather Report because they support my contention already expressed, that recurving or in fact the direction of motion at any time is not directly indicated by the ground level observations of the day. September 6th.—‘‘ The storm at the head of the Bay is lkely to advance into the east of the Central Provinces during the next thirty- six hours and will probably give moderate to heavy rain to Orissa, Chota Nagpur, West Bengal, and the east of the Central Provinces. Weather. may become feebly unsettled in Kashmir within the next day or two.” (Sd.) J. Murray, Offg. Meteorological Reporter to the Govt. of India and Director-General of Indian Observatories. September 7th.—‘ The storm at the head of the Bay has hardly changed in position during the past twenty-four hours and now shows a tendency to advance northwards into Bengal in which case rainfall will increase in Lower Bengal.” September 8th.—‘The cyclonic storm in Bengal will probabl y continue to advance in the same general northerly direction and give moderate to heavy rain in Kast and North Bengal and Assam.” The next storm in the Bay began towards the end of the third week of September and was well defined over the north-west angle on the 24th. From there it moved north-westward into Chota Nagpur, then northwards, and on the morning of the 26th was recurving towards 903. ] C. Little—On two remarkable rain-bursts in Bengal, 53 the Darjeeling Hills. It broke up on reaching the Himalayas, causing heavy rainfall in the eastern part of the range. Meee ‘ x 7 : +A mee fay nk | = IY at ea gory OEE yeti” “ ‘ ~*~ . ek he ATS oS . SS abs EG ths a He Ry ee Say a0 it od te fists ae LUE rie ay Rake the ones ei eee Bir: a Snort fb Se ae repre we Wyss ane eis aa ma *orP to Ec wetness Maria tis rec Sen ‘, he - “ + 7) een», ta, oe, Ayint» . Ate 7 ‘ ° 7 -_ h “4 * «“ r o ¥ -. Pe ee | * . a i = > . "3 4 ’ - JOURNAL OF THE ASIATIC SOCIETY OF BENGAL, —s ofoe— Vol. LXXII. Part Il.—NATURAL SCIENCE. a No. 3.—19038. Contributions toward a Monograph of the Oriental Aleurodide. —Part L— By H. W. Psat, F.E.S. [Received 28th January, 1908. Read 4th February, 1903.] CHAPTER I. INTRODUCTORY. The Aleurodide area family of the Homoptera which are allied to the well-known Coccide or Scale Insects. Owing to their similarity to this family they are usnally mistaken for such by Agriculturists and such mistakes can easily be excused owing to this family being so little known. The Aleurodide, like all the bugs, are sucking insects and derive their nourishment from plants by pumping up the sap by means of a pro- boscis formed of three fine setee. In the Coccide the winged males (the females are unwinged )aredestitute of mouth parts, butinthe Aleurodides the males and females both possess wings and the mouth parts and diges- tive organs are present. It is however in the immature and stationary stages that the greatest damage is done by these insects. In a country like India where there is practically a perpetual summer, these insects are present in great abundance and they are more destructive than in colder climates, This is due to there being a continuous succession of J. 1-1O.. 62 H. W. Peal—Monograph of the Oriental Aleurodide. [No. 3, generations uninterrupted by winter, which in colder latitudes not only puts an end to their depredations for a season, but also seriously thins their numbers, thus acting as a very efficient check on an abnormal increase. Fortunately however for us:the members of this family have not proved so prominently destructive as some of the Scale Insects, and probably this is the reason why hitherto they have been but little studied. Although not of pressing importance it must be admitted that their potential power for expansion and destruction is possibly even greater than that of the Coccide. Although not possessing limbs in the early and more destructive stages! as in some Coccids (like the Mono- phlebinw) still their power of dissemination is greater as, owing to the females being winged and capable of prolonged flight, they can be more easily spread. Thus ina plantation their spread would take place quicker than Scale Insects. Asa matter of fact it is rare, when several plants of the same species are grouped together, to find only one or two showing traces of this pest; as a rule the entire clump is affected. So far only six species belonging to the family Aleurodide have been described from India, This it must be admitted is a poor record. When we turn to the Coccide we see however that even this important family had been till only recently entirely neglected. Now, thanks to the admirable work of Mr. KE. E. Green, the number of our recorded Indian Species of the Coccide has risen from seven in 1886 to fifty- two in 1901, and this even is only a tithe of those which will be discovered in time and worked up. The case of the Aleurodide is similar or even worse ; as latterly, after the death of Mr. Maskell of New Zealand, no one has done any work on the Indian forms. India in reality is exceedingly rich in members belonging to this family. In the short space of time that I have been working up the Aleurodide I have examined nearly fifty species. Mr. Green has sent me twenty- eight species from Ceylon, one species from Java and two species from Victoria for determination. CHAPTER II. COLLECTION AND PREPARATION. . . ‘As the habits of members of this family are so similar to those in the Scale Insects the method of collection and preparation is identical or almost so in the case of both. The only disappointment one may meet in collecting is the far larger number of scale insects one is inveigled into examining. Itisimpossible to give any definite instructions as to the method of searching for these insects, but the few following notes as to at Except the very first stage and then their power of movement is not very great, the larve usually moving but a short distance from the egg. —_* 1903.] H. W. Peal—Monograph of the Oriental Aleurodide. 63 my method of collecting may be of use. I carry a large number, a dozen suffices, of fairly long and narrow envelopes. These envelopes are all that is required for the collection of larve and pupz. One soon gets quite expert in noticing the signs which wile the presence of these insects. A spotted yellow leaf, a black deposit of fungus on the upper surface of the leaf, a procession of ants, these and many other little signs are soon picked up. Always search the older and more mature leaves rather than the young foliage, nor should one overlook the dead and withered leaves which lie on the ground. The insects are almost invariably attached to the under-surface of the leaves. For collecting the adults use small phials. The insects themselves must be picked up with a fine camel hair brush the tip of which has been previously moistened. After collecting as many larvae and pups as are required, make what notes you wish on the envelope itself. The following at least should be entered. Name of tree, colour of insect, character of fluff if any, the comparative abundance of the insect, locality and date. If the tree cannot be recognised carry away some of the leaves and if sit ert flowers for identification by a botanist. As soon as possible after reaching home the insects should be exam- ined and sorted, and if possible. mounted. When the insects are dry it is impossible to examine the first larval stage satisfactorily as the legs and antenne shrivel up. For examination one will find that powers of 4, $, and 3 are usually sufficient. A camera-lucida for making the drawings is almost indispensable. After cleaning a microscope slide, drop some dilute Canada balsam on it; examine the leaves with a hand lens, and with a fine pin moistened if necessary with turpentine, pick up a few eggs and transfer them to the slide. Next search for larva of the first stage. This is somewhat difficult as they are usually only about ‘2 mm. in length. Do not be content with one or two speci- mens, mount several. Pick up the other larval stages present and also some of the pup. If the insects are very dark one will have to boil them in caustic potash before mounting. The following is the method, Half fill a fairly long test-tube or watch glass with an almost saturated solution of caustic potash, drop in one insect and boil over a spirit lamp or gas jet. When sufficiently transparent remove the Specimen with a piece of wire or a hair spring into a small dish of water. After soaking out the caustic potash mount the specimen in a drop of glycerine. I however find that with black species, if one mounts specimens in dilute Canada balsam, and the slide is put away for some time, the insects as a rule become transparent enough to be 64. H. W. Peal—Monograph of the Oriental Aleurodide. [No. 3, examined for fine details. Those species which have the dorsum covered with spines should be mounted under a cover glass raised above the slide by acork or metal ring. The cover glass is thus kept some distance from the insect itself. It is impossible however in this case to examine with very high powers. The winged insect should be mounted as soon as possible, as it is impossible to make out the details in a shrivelled specimen. I find Canada balsam excellent for mounting them, but it is advisable to stain some of the insects first. It will be found somewhat difficult to mount the adult so as to show the wings to advantage. I find that by placing the insect on the slide, when the balsam is somewhat hardened, gentle pressure on the head with a fine pin will cause the body to slip backwards and leave the wings spread out evenly. If this is found difficult, an alternative method is to carefully cut off the wings with a fine scalpel, the operation meanwhile being watched with a hand lens. Asa rule it will be found that Canada balsam is not suited for those species in which the wings _ are banded, as the bands show but faintly. In this case mount dry by making a ring of balsam and after placing the wing in the centre, pressing on a small cover glass. Keep a fairly large number of the insects in situ on the dry leaves and also some of the winged insects in empty phials or if preferred in spirit. CHAPTER III. PREVENTIVE MEASURES. I do not think it will be out of place to describe shortly such pre- ventive measures as are useful in eradicating or at any rate keeping down these pests. These insects cannot be killed by means of any of the poisons ordinarily used against mandibulate insects, as they exist by pumping up sap from within the leaves by means of their sete. The most convenient all-round remedy. is the well-known kero- sine emulsion which when sprayed on the plants kills the insect by closing up the spiracles. It is true that these insects are extensively parasitized by chalcids and their numbers thus kept down; but despite this check these pests often get out of hand and do extensive damage. The causes which lead to this result are varied. It may be that as in the case of most cultivated plants, their natural food-plant may be large- ly increased and thus safficient pabulum be provided; or seasons may be favourable.. In this case the pests’ increase would be short-lived, as the parasite being provided with plenty of food, would soon increase and reduce the pest to something like its old numbers. If, however, the pest is unwittingly imported with its food-plant into a new country and its natural parasite or parasites be left behind at home, it is possible 1903.] H.W. Peal—Monograph of the Oriental Aleurodide. 65 that the pest may increase amazingly and do extensive damage. In this case its natural parasite being absent, the most suitable remedial measure would naturally be a search for and importation of the parasite. Care would have to be taken of course that no hyperparasites were im- ported as well. In my opinion I think it may be taken for granted that in its native habitat and under the check of its parasites, a pest cannot ordinarily, without other assistance, be eradicated by means of these natural parasites, as the balance has been adjusted after many genera- tions of struggle between the parasite and its victim.! Inthe case how- ever of an imported parasite the case is quite different; the environ- ment, climatic conditions, abundance of food and the like will be differ- ent from that in its native habitat and the pest will take some time to settle down in its new home. While in this as it were transitory’ stage the parasite (imported without its own parasites) will probably have a far greater power to check the pest. IT have never observed lady birds feeding on any of shents insects but it is possible that they do so. CHAPTER IV. CHARACTERS AND CLASSIFICATION. The Aleurodide area family of insects belonging to the Order Hemiptera, Suborder Homoptera. Characteristics of the family :— Adult. Furnished with four wings in both sexes. Sucking and digestive organs present. Eyes usually constricted or reniform, some- times completely divided. An ocellus above each eye. Antenne seven jointed, Tarsi dimerous and furnished with three claws. Fore wings with one median and one basal vein (in the genus Aleuwrodicus there is also a terminal vein). The wings usually white, sometimes spotted or banded with red or grey. The surface of the wings mealy. Puparium. Scale-like. Brown, black or yellow in colour. The dorsum sometimes covered with a waxy secretion. The most important characteristic is the vasiform orifice described below. Larva lst stage. Shape elliptical. Furnished with short stout legs and antennz. The other larval stages similar to the puparium or last quiescent stage. Egg. The eggs are bean shaped, curved and are attached to the leaf by a short peduncle or stalk. In the adult stage these insects can be distinguished from the 1 It cannot, we think, be said that there is ever a ‘straggle’ between the parasite and its host; the lessened food supply available for the former is entirely brought about by its own actions. Hon, Edit. 66 H. W. Peal—Monograph of the Oriental Aleurodide. | No. 3, Coccids by their possessing four wings to the latter’s two, and from the Pysllids by the venation of the wings. The fore wings of the latter family are supplied with several veins while in the Aleurodidsw there are only two (or in some cases three). In the larval and pupal stages they can be distinguished from both the Coccide and Psyllide by the presence on the dorsal surface of the last segment of the abdomen of a triangular or subelliptical opening (also present in the adult) known as the vasiform orifice. This orifice has hinged to it anteriorly a plate or flap known as the operculum. This operculum projects and covers to some extent the opening of the vasiform orifice. There is besides in nearly every case a narrow tongue-like organ which lies within the vasiform orifice and which projects caudad more or less into or beyond the vasiform orifice. This is the organ which produces the.honey-dew. The family is divided into two genera: Alewrodes and Alewrodicus. The species belonging to the genus Aleurodicus have with one exception been all described from the warmer parts of America. Genus Aleurodes. Adults with only one branch (basal) from vein of forewing. Hind wing with a single vein. Genus Aleurodicus. Adults having the vein in both wings with a distal and basal branch. In a recent work by Mr. T. D. A. Cockerell (Proc. Acad. Philadel- phia, May 1902, p. 279), these two genera are divided into several sub- genera. I will deal with these subgenera later on when classifying our Indian species. As regards the bibliography, the principal works dealing with this family are Dr. V. Signoret’s papers in the Journal of the — Entomological Society of France, 1867 and 1883; Mr. W. M. Maskell’s papers in the Transactions of the New Zealand Institute 1889, 1890, and 1895; and Mr. A. L. Quaintance’s “ Contributions toward a study of the American Alenrodide,”’ (U.S. Dept. Agri. Technical Series No. 8). From these works the complete bibliography can be obtained. Both Mr. Maskell and Mr. Quaintance have put forward a plea for describing species belonging to the family, not only from the adult insect, but also from the larva and pupa. However, objectionable such a. practice is in the case of other insects it is perfectly valid in the case of the Aleurodide. Though in some cases it is true that the perfect insects do differ in some small particulars, such as the occasional pre- sence of spots, and bands on the wings, it is practically impossible in most cases to differentiate species from this stage alone. In the larval and pupal stages on the other hand there is a considerable diversity of 1903, | H. W. Peal—Monograph of the Oriental Aleurodidx. 67 form and colour and in the character of the waxy secretion. It also happens that generally when these insects are collected, only the larve and pupz are sent for examination, as these are the stages in which damage is done to plants. If however the adult “flies” are obtained, they should always be described, particularly the colour of the wings, as although in most cases they are white some species have the wings more or less spotted with brown or red. I have gone somewhat into detail in describing the different larval stages. It is difficult except in some few cases to be absolutely sure as tothe number of moults. I have however but little doubt that the normal number is four excluding the pupal stage. This I have made certain of in some species but it is of course impossible to find out the number in many cases as material sent usually consists of only one or two of the stages. CHAPTER V. | DESCRIPTION OF 7 NEW SPECIES OF Aleurodes. Aleurodes religiosa n, sp. Plate V, figs. 6-9. Signoret in his ‘‘ Essai Monographique sur les Aleurodes” (Ann. Soe. Ent. France Ser. 4, VIII, 1868), describes and figures an Aleu- rodid he obtained from Rubus fruticosus and which he named A. rubi. This species is distinguished from A. longicere, Walk. by;minute dif- ferences in the adult insect, the larval (really pupal) state, which he figures being identical except that as he says “ sur la ligne mediane on observe sur chaque segment abdominal une impression plus visible a la base qu’au sommet.”’ In allied species the differences in the adult stage are extremely minute and it is hardly safe to rely on these differences alone in defining a species. A. religiosa is undoubtedly closely allied to these two species possess- ing as it does the same series of spines on the dorsum. It however dif- fers in having in addition another pair of spines placed fairly close together on the cephalic region, caudad of the outer and longer pair on cephalic region. It also has two yellow ridges one on each side of the vasiform orifice, The caudal half of the dorsum is narrower than the cephalic half and the margin caudad is slightly incurved. The cephalo- thoracic margins are also incurved the surrounding area being suffused with yellow. The indentures also bear a short fragmentary fringe of wax. I have described this species in detail as Signoret gives no detailed description of the vasiform orifice. His drawing shows that it is probably identical or almost identical (but smaller in proportion) to that in A. re- ligiosa ; he does not deal with the earlier stages at all, nor does he give 68 H. W.-Peal—Monograph of the Oriental Aleurodidw. — [No. 3, any measurement. I have found A. religiosa fairly common on some pepul and banyan plants in Calcutta. So far however I have been able to obtain it from only one locality. The larve and pupe are usually to be found on the same leaves as A. quaintancet. All stages can be obtained at the same time and from off the same leaf, but one or two stages always largely predominate. In the middle of November pup, adults and eggs can be obtained in abundance but the larval stages are scarce. Keg. Size ‘16 mm. x °06 mm. Light yellow when first laid turning light-brown afterwards. Peduncle short about ‘025 mm. in length; surface minutely sculptured with hexagons. The adult female when laying eggs moves in the seg- ment of a circle, the leaf being whitened by the white meal from the undersurface of the abdomen. Larva lst stage. Size ‘18 mm. X °1 mm. Elliptical, narrow for its length. Colour light yellow, eyes maroon. Legs and antenne present. One long seta on centre of each tibia of second and third pair of legs. One long setaon tarsi of all legs. Antenne apparently six-jointed the last joint short and slender. Two long caudal setee and two short sets caudo-laterally on margin. There is a narrow fringe of wax around the margin. Larva 2nd stage. Size (16 mm. x ‘09. mm. Elliptical, narrow for its length. Colour light yellow. Two darker yellow pigment patches on abdominal region. Eyes maroon, fairly broad waxy fringe right around margin. Dorsum slightly elevated especially along centre of abdominal region. Abdominal segments dis- tinct along dorsum. Two long sete on second segment of abdomen. Two long sete caudadon margin. Length of latter pair‘'!mm. ‘Two shorter sete on caudo-lateral margin. Region round vasiform orifice slightly tinged with yellow. Vasiform orifice relatively large in this stage, shape conical, apex pointing caudad. Anterior edge flat, posterior edge slightly flattened ; lateral margins upper edge convex lower edge con- cave. Operculum brown: anterior and posterior margins flat, lateral margins convex. Length not quite half that of the vasiform orifice: Colour brown, surface covered with fine hairs. Lingula two jointed the first joint short and broad, the second joint narrow broadening out to a conical tip: the surface covered with fine hairs. The lingula projects almost half its length beyond the operculum, the tip extending almost to the lower edge of the vasiform orifice. Legs present but short and ' rudimentary ; antennz obsolete. The marginal fringe of wax rises from a series of pores just above and within the dorsum. At each segment of the abdomen and about the same distances apart on the cephalo- 1903, ] H. W. Peal—Monograph of the Oriental Aleurodidex. 69 thoracic region there are two larger pores which produce larger fila- ments of wax and so more or less break up the otherwise uniform stretch of fringe. Larva 3rd stage. Size ‘35mm. x ‘21mm. - Shape elliptical, broadest cephalad tapering gradually caudad. Ce- phalothoracic margins incurved. Colour light yellow: two yellow pig- ment patches on abdomen. Area around indentures on cephalothoracic margins and around vasiform orifice suffused with yellow. Hyes maroon. Dorsum slightly elevated, especially along the abdominal region. Seg- ments of abdomen very distinct along centre of dorsum; they cannot be distinguished near margin. A short fringe of waxall around margin. It is relatively narrower than that in theprecedingstage. There are two sete on the second segment of the abdomen: two extremely fine long setze ‘2 mm. in length, just within the margin at incurved cephalothoracic areas and two sightly shorter sete caudad on margin. All these sete spring from small tubercles. Vasiform orifice and its appendages similar to that in the preceding stage, There are, however, two fairly long sete near end of lingula. Larva 4th stage. Size ‘44 mm. x ‘3mm. Caudal extremity of vasiform orifice flat. There is a narrow marginal fringe of wax. The rest substantially as in puparium. The lateral margins of the operculum in this stage and in the pupa are flat, angled inwards to meet posterior margin : upper edges curved to meet anterior margin : they are not convex as in the other stages of the larva. There is a series of small pores along ventral surface of margin. These produce a small quantity of wax. The margin is fairly broad. | Puparium. Size 56 mm. x ‘35 mm. Shape elliptical, broadest ¢ephalad. Lateral cephalothoracic and caudal margins incurved. Colour yellowish, semi-transparent under the microscope. Two yellow pigment patches on abdomen: light yellow- brown areas around cephalothoracic and caudal indentures. There is an extremely short scanty fringe of wax at indentures; no trace of a fringe elsewhere on margin. Dorsum elevated, surface granular, abdom- inal segments fairly distinct. Dorsum covered with several long setee which spring from small tubercles. They are situated one pair cephalad some distance from the nrargin; slightly caudad of these a second shorter pair in which the sete are placed rather close together ; one pair on prothorax at inner edge of yellow-brown areas running from the incurved thoracic margins; a pair on metathorax; a pair fairly close together on first segment of abdomen; a pair on fourth segment of abdomen; a pair one on each side of the vasiform orifice, ‘and a pair caudad just within the margin. 7 J. m. 11 70 H. W. Peal—Monograph of the Oriental Aleuwrodide. [No. 3, Vasiform orifice long, in the shape of a narrow cone ; apex pointing caudad. Cephalic margin flat, corners rounded. Connecting the vasi- form orifice to the incurved area on caudal margin is a narrow groove or channel. This channel and the sides of the vasiform orifice are bounded by two yellow, rounded fleshy ridges which run from the upper corners of vasiform orifice caudad to margin, On the end of these ridges are the two tubercles from which the caudal sete spring. Edge of vasiform orifice light brown. Operculum similar to that in previous stages but lateral margins flatter ; but little more than jrd. length of vasiform orifice. Colour light-brown, caudal margin darkest; surface covered with fine hairs. There are near the tip two fairly long hairs which project caudad. | Parasited pups become very convex, dark coloured andin some cases turn quite black. Adult female. Length ‘8mm. Wing ‘85 mm. x ‘31 mm. Colour light-yellow ; dorsal surface of thorax tinged with brown. Legs light-yellow ; eyes maroon, almost divided, lower half larger. Wing immaculate powdered with white meal. Length of antenne ‘22 mm. Formula 3, 2, 7, 5, 6,1, 4. Joint 1 short, broad for its length ; joint 2 subpyriform, nearly twice the length of joint 1; joint 3 twice the length of joint 2; joint 4 one-fourth length of joint 3; joint 5 one-and-a-half times the length of joint 4; joint 6 slightly shorter than joint 5; joint 7 nearly one-and-a-half times the length of joint 6. Vasiform orifice cordate, anterior edge flat. Rim of vasiform orifice tinged with yellow. Operculum in the form of a narrow neck which broadens out into a wide bilobed tip. The posterior margin incurved. Operculum faintly tinged with yellow. lLingula long, fairly stout, conical at tip; setose, the end extends almost to the inferior edge of the vasiform orifice ; colour yellow. Adult male. Length ‘72 mm. Wing ‘74 mm. x ‘25 mm. An- tenne ‘2mm. Formula of antenne, shape of vasiform orifice, etc., as in female. Aleurodes bengalensis n, sp. Plate II, Figs. 10-16. Egg. ‘2 mm. x ‘1 mm. Colour reddish-brown under the microscope, dark claret colour under a hand lens. Surface covered with meal. The eggs are usually laid in a more or less perfect ring. For want of material the first, second, and third larval stages have been described from empty skins and in some cases dead and dried individuals. I will describe them later on in detail when these stages can be obtained. Just now, Nov. 20th, pups and adults are fairly plenti- fyl and larvee 4th stage scarce, no living examples of any of the other ~1903.] H.W. Peal—Monograph of the Oriental Alewrodidx. 71 larval stages being obtainable. Large quantities of the cast off skins can however be obtained, which is rather unusual amongst these insects. | The insects are present on the leaves in colonies of from half a dozen to several hundred individuals. The location of a colony can be easily ascertained owing to the peculiarly whitened appearance of the leaf: wherever a colony has planted itself. This white is the meal from off the adults. I observed no parasited pupe. Larva lst stage. Size*2 mm. x *l mm. Shape elliptical. Yellow pigment patch on centre of abdomen. A fairly broad marginal fringe of wax. There are 26 spines on dorsum, all around and some distance from the margin. Two series of pores around the margin; difficult to make out but apparently as in later stages. Two long sete caudad on margin. Two short sete caudola- terally on margin. The vasiform orifice opens directly on the surface of the dorsum. Shape cordate; anterior edge flattish; edge tinged with yellow. Operculum yellow, similar in shape to the vasiform orifice only narrower being broader than long. Anterior and posterior margins flattish. The operculum extends only a little further than cen- tre of vasiform orifice. Lingula short, broad, constricted in the middle to form a flat broad basal end and aspatulate tip. About half the lin. gula projects beyond the operculum. Colour of lingula brownish yel- low. There appear to be no pores placed centrally on the abdominal ‘segments as in later stages. Larva 2nd stage. Size ‘65 mm. x ‘43 mm. Shape elliptical. A large brown patch on abdomen extending from the first to the sixth segment. Area around vasiform orifice tinged with brown. There are 26 sete around and slightly within the margin. -Caudad on margin 2 sete. Two shorter sete caudolaterally on mar- gin, These 4 sete are placed on a lower plane than the marginal ring of sete. There is a fairly broad marginal fringe of wax. There are two marginal series of pores situated apparently asin pupa. Of the central double row of abdominal pores present in the pupa only the pair on the first and second segments present. There. are rows of ex: tremely minute pores on each segment of the abdomen placed centrally and extending about one-third the width of the dorsum. These pores tend to be disposed in rows but are very irregularly placed. The fourth, fifth, and sixth segments have the largest number. Vasiform orifice placed in a depressed pit. The pit proportionately far smaller than that in the pupa, the vasiform orifice nearly filling it. Anterior and posterior edges of pit flat, sides convex. The lateral and posterior edges slope inwards. The vasiform orifice situated in a clear 72 H. W. Peal—Monograph of the Oriental Alewrodide. (No. 3, space, the edges.of the space being demarcated by a dark line; rest of pit yellowish brown. Vasiform orifice similar in shape to pit, edges dark brown. Operculum broader than long, anterior edge flat, posterior edge concave, sides convex ; colour brown. It extends to a little beyond centre of vasiform orifice. Lingula broad for its length, dumb-bell- shaped, being constricted in centre, tip spatulate. It projects for about half its length beyond operculum ; colour brown. Larva 3rd stage. Size ‘76 mm. x ‘46 mm. Apparently similar to the 4th stage. Larva 4th stage. Size.°85 mm. x ‘5 mm. Shape as in pupa. A short marginal fringe of wax. Vertical fringe short. Dorsum much blotched with black. Rest apparently as in pupa. | Puparium. Size 1:1] mm. x ‘68 mm, Shape elliptical, narrower cephalad, the margin being rather abrupt- ly incurved at thorax. Margin caudad flattish. Cephalothoracic area lemon yellow, later turning to orange. Last three segments of the abdomen up to vasiform orifice orange. There is aclear space between these two patches. Two irregular longitudinal grey bands on anterior segments of the abdomen just without the central double row of pores. A broad edging of black around cephalothoracic margin. This is in ‘some cases interrupted so as to form three separate patches, one cephalic and two thoracic. The cephalic patch is divided into two by a narrow yellow band which connects the cephalic margin to central yellow area. A black edging on margin caudad. Caudolateral margins more or less blotched with black. Rest of body of a cream white colour. The grey edging on margin is notat all constant, it varying a good deal. As the insect within develops the markings gradually disappear. They disappear very irregularly, in many cases blotches disappearing from one side before the other. The caudolateral marginal blotches dis- appear first. The suture between thorax and abdomen sometimes apparent as a fairly broad transparent band. There are 26 setx right around dorsum; they are set just within the margin. The upper end of each seta for about one-third of its length surrounded with a quantity of fluffy wax. Of these sete 14 are situated on the abdominal and 12 on the cephalothoracic region. The spines are comparatively short; colour light brown. Two. long sete caudad on margin on a slightly lower plane than the marginal fringe of spines. Mesad. of the marginal spines there are present on the dorsum two series of large pores an inner and an outer series. There are in all 28 -pores in the outer series, 12 on the abdominal and 16 onthe cepha- lothoracic region. The pores on the abdominal segments are situated, 1903.] H.W. Peal—-Monograph of the Oriental Aleurodide. 73 one on each side near margin of 3rd, 4th, 5th, and 6th segments and twoon7th. There are 26 pores in the inner series, 14 on the abdominal and 12 on the cephalothoracic region. The abdominal pores are situated two on each side near margin of the 3rd segment, one.on each side near margin of 4th, 5th,and 6th segments and two similarly placed on the 7th segment. There are also two rows of similar pores down centre of dorsum on the abdominal segments. The rows are placed fairly close together. There are in all 6 pores in each row, 1 pore of each row be- ing placed on abdominal segments 1 to 6. The pores are large, rims slightly elevated above dorsum. All the pores secrete globules of liquid. Ventrally on margin a series of fine pores which secrete a quantity of wax. This fringe of wax is vertical and about ‘15 mm. in length. It elevates the pupa off the leaf. The vasiform orifice is pro- minent and is extremely characteristic. It is situated in a large depres- sed pit. The pit is conical apex pointing caudad. Apical and basal margins flat, the apical margin being if anything a trifle incurved. Lateral margins rounded, basal ends being curved to meet basal margin. Sides from centre to near apical margin flat, then sharply incurved to meet apical margin, Edges dark brown, an outer edge of light brown. The sides slope inwards. Apical end (of pit shallow, the floor sloping down to the anterior end at which point the pit is deepest. Floor of pit highly rugose, with seven dark wavy brown lines forming the demarca- tions of the ridges. These ridges vary in different individuals. A clear light yellow area around vasiform orifice. Vasiform orifice oval, posterior margin slightly incurved. Anteriorly the margin projects be- yond and can be seen below basal edge of pit, showing that the pit’s basal edge overhangs at the top. Edge of vasiform orifice tinged with brown. Operculum two-thirds the length of the vasiform orifice. An- terior margin flat, posterior margin slightly concave, sides convex, the curve being somewhat angular. Colour light brown. Lingula spatu- late at tip. Only the tip projects beyond the operculum, it is the only part which can be distinguished. Colour brown. Legs of adult can be distinguished through ventral surface. Appearance much the same as that shown in the description of A. citri. When the adult is emerging from the pupal case its thorax is of a bright deep orange colour, Adult female. Length 1mm. Wing 1'15 mm. X ‘42 mm. Colour light orange ; surface of the body dusted with a large quan- tity of white meal. Eyes maroon, almost divided. Wings immaculate, covered with white meal. Legs and antenne white, tinged with yel- low, dusted with white meal. Antenne ‘3mm. in length. Formula 4, (2, 3,) 5,7 (1,6). Joint 1 short, flat : joint 2 stout, subpyriform : joint 3 thin, cylindrical, equal in length to joint 2: joint 4 slightly longer than 74 H. W. Peal—Monograph of the Oriental Aleurodidee. [No. 35 joint 3, joint 5 short, only two-thirds length of joint 4: joint 6 short, little more than one-third length of joint 5: joint 7 twice the length of joint six. Vasiform orifice somewhat square, broader than long, poste- rior edge widest, anterior edge flattish, posterior edge slightly convex : lateral edges flat and angled outwards. Margin of vasiform orifice slight- ly tinged with brown: inner area semitransparent. Operculum flattish, broader than long: only about one-third length of vasiform orifice. An- terior and posterior margins concave, lateral margins convex. The up- per corners are the only parts of the operculum which touch the vasi- form orifice. Colour brown. Lingula long, cylindrical, two jointed, first joint shortest. The lingula projects nearly half its length beyond the vasiform orifice. | | Ep Adult male. Length *9 mm. Wing °85 mm. x ‘31 mm. Antenne ‘25 mm. ere BE en. Long silky fluff on abdomen as in A, citri. This is only present in recently emerged individuals. | , i Aleurodes alcocki n. sp. Plate II, Figs. 1-9. Hgg. Size ‘2 mm, X ‘1 mm. Colour light yellow brown. It stands upright on leaf to which it © is attached by a peduncle about ‘04 mm. in length. The egg is curved, surface sculptured with minute hexagons. Larva lst stage. Size ‘27 mm. x ‘16 mm. Shape elliptical, extremely narrow for its length. Provided with antenns and legs. Colour whitish, semitransparent under the micro- scope. Margin minutely crenulated. There is a series of closely appos- ed marginal pores which secrete a short regular fringe of wax. Four fairly long setee caudad on margin. Caudolaterally on margin eight ex- tremely short sete (four a side) placed equidistant and forming a regu- lar continuation of the four long caudal sete. Cephalad there are mar- ginally twelve (six a side) setze which extend around the cephalothoracic margin. Vasiform orifice slightly elevated, conical, apex pointing cau- dad. Operculum semicircular, flat anteriorly, almost filling up vasiform orifice. Colour brown, surface covered with fine hairs. Lingula extreme- ly short, cylindrical, about half the length of the operculum beneath which it is hidden. Legs stout; tibiz of second and third pair of legs furnished each with a long curved hair placed about the centre of the joint. The tarsi of all the legs provided with a long hair just above claw (or claws). Tarsi with apparently only one claw each. Antenne ‘06mm. (Formula 5, 6, 3, (1, 2, 4,) 7), long, seven jointed, covered with ‘fine hairs. 1st joint short : 2nd joint short, stout, about the same length as the first joint: 3rd joint thin, cylindrical, slightly longer than joint two: 4th joint shorter than joint three, about the same length as joint 1903. | H. W. Peal—Monograph of the Oriental Aleurodidex. 75 two: 5th joint extremely long, four times the length of joint four: 6th joint short, one and a half times length of joint four: 7th joint extremely thin and short, about one-fourth the length of joint six. Itis extremely difficult to make out the different joints distinctly, but there is no doubt that joint 5 consists of only a single joint, Hyes maroon coloured. There are several rows of minute pores on the abdomen there being two rows on each abdominal segment. In the figure the artist has repre- sented the vasiform orifice as seen ventrally by him through the trans- parent body. | Larva 2nd stage. Size °7 mm. x ‘37 mm. Margin slightly incurved on sides of cephalothorax and at caudal margin. Colour yellow, almost transparent when seen under the micro- scope. Yellow, pigment patch in centre of anterior abdominal segments. Eyes maroon coloured. Dorsum slightly elevated. The margin is un- usually broad. The abdominal segments clearly discernible on elevated portion of dorsum. ‘There is a. narrow ridge running from thorax ce- phalid to the margin where it sometimes projects to a slight point. A series of closely apposed marginal wax tubes which secrete a very frag- mentary fringe. Crenulations of marginal pores distinct right up to edge of elevated portion of dorsum. LKdge of margin thickened some- what, brown in colour. Marginal pores on incurved thoracic and caudal margins slightly larger than the rest, Two fairly long set on caudal margin, and a pair placed caudolaterally, slightly anterior to these and in line with the lower edge of the vasiform orifice. Vasiform orifice oval, anterior margin flattish. Edge of orifice tinged with brown. Oper- culum broader than long, of the same shape as the vasiform orifice. The anterior margin flat so that it only touches the rim of the vasiform orifice at the outer edges. Its lower edge extends some distance beyond centre of vasiform orifice. The free (lower) margin slightly elevated. Sur- face of operculum covered with fine hairs. Lingula short, cylindrical, difficult to make out as it is shorter than the operculum beneath which it lies. Larva 8rd stage. Size ‘85mm. x °5 mm. | Shape elliptical, narrower cephalad. Colour yellow: a bright yellow pigment spot on centre of anterior abdominal segments, Brown medio-dorsal ridge running from the thorax cephalad to margin. At thorax a dark brown bar crosses the median dorsal ridge at right an- gles. Posterior to this is another line which is angled caudolaterally, then back again cephalolaterally. Thorax suffused with light brown, with a deeply trilobed brown line on each side of mediodorsal ridge demarcating the outlines of the developing insect within. Abdominal segments distinct, Edge of margin set with closely apposed pores 76 H. W. Peal—Monograph of the Oriental Aleurodidxe. [No. 8, which produce a very fragmentary fringe. These pores are situated on a slightly higher plane than the margin. Margin incurved at sides of cephalothorax and at caudal margin. There are eight large and dis- tinct wax tubes on each of these areas. Region around these inden- tures tinged with brown, which, in the case of the caudal indenture, reaches to the vasiform orifice. Eyes reddish. Two small sete on the cephalic margin. Two small sete caudad just within the margin and placed one on each side of the incurved area. They point upwards and outwards. Vasiform orifice similar to that in the larva 2nd stage. In some specimens the orifice is almost circular. In others the anterior margin and the sides are flattened somewhat, giving the vasiform orifice a conical appearance, the apex pointing caudad. The edges of the ori- fice tinged with brown. The orifice appears to project slightly beyond surface of the dorsum. The operculum similar in shape to that in the larva 2nd stage but is smaller in proportion and does not extend so far caudad. Lingula as in larva 2nd stage. There is but little difference except in size between this stage and the pupa, except that the insect is more transparent, has the median keel on cephalothorax less promi- nent and the operculum is larger, being intermediate in size between that of the pupa and the larva 2nd stage. Puparium. Size 1 mm. x ‘78 mm. Shape elliptical, narrower cephalad. Margin at thorax and caudal extremity incurved. Colour yellow. Dorsum elevated. A dark brown elevated median keel running from thorax to cephalic margin beyond which it slightly projects. At thorax a dark brown bar crosses the me- dian dorsal ridge at right angles. Slightly posterior to this is another line which is angled caudolaterally and then back again cephalolaterally. Thorax suffused with brown; centre of abdomen suffused with lighter brown. Segments of abdomen fairly distinct along medio-dorsal line. Vasiform orifice oval: anterior margin slightly flattened. Rim round vasiform orifice dark brown. The lower portion of the orifice covered with fine short hairs. Operculum small, similar in outline to vasiform orifice. The lower edge extends to about the centre of the orifice. Sur- face covered with fine hairs. Lingula short, cylindrical, difficult to ob- serve as it is shorter than the operculum and does not extend beyond that organ. Incurved areas at thoracic and caudal margins tinged with brown. At these places the marginal pores are eight in number, larger than the other marginal pores and differ in producing fairly long filaments of white wax. A distinct series of pores right around on margin. They secrete a quantity of gelatinous looking wax. Hach in- dividual filament is distinct for a certain distance beyond the margin “then coalesces to form a gelatinous mass with the others. Dorsum cover- 1903.] HH. W. Peal—Monograph of the Oriental Aleurodide. 77 ed with a similar gelatinous secretion. This.is secreted from a large number of very minute pores which appear to lie all over the dorsum without any definite grouping. Colour of secretion yellow. Two sete, one on each side of incurved caudal area. Parasited pupe are smaller than nonparasited pup, are darker in colour and have the dorsum much arched. The developing parasite can be easily distinguished within the body. Adult female. Length] mm. Wing 1:05 mm. x ‘45 mm. | Colour yellow: thorax tinged with brown, body and legs dusted with white meal. Eyes reniform, almost divided. Upper half cherry- red lower half maroon. There is a large rectangular brown patch on last segment of abdomen: within it and at the upper end is the vasi- form orifice. Vasiform orifice oval. Operculum small, extending only to centre of orifice. Lingula long, cylindrical, extending a short dis- tance beyond vasiform orifice. Forewing patched with bluish grey. These patches lie in the form of three bars which run across the wing being more or less interrupted at median vein. A longitudinal bar con- nects all the transverse patches, This bar is situated below the median vein but is prolonged above the vein to apical margin of wing. Apex of hindwing tinged with grey. Antenne yellow; Formula 3, 2, (5, 6, 7,) (1,4. Ist joint short, stout: 2nd joint subpyriform, almost globular : 3rd joint thin, cylindrical, two-and-a-half times the length of joint two: 4th joint extremely short, half the length of joint two: joints 5, 6, and 7 one-and-a-half times the length of joint four. There is a dark line on each side of the under-surface of the second and third segments of the abdomen. ‘The under-surface of the last segment of the abdomen with a patch of grey. Adult male. Size 95 mm. Wing ‘9 mm. x ‘33 mm. Colour yellow: dorsally segments of abdomen and thorax tinged with grey. Last segment of abdomen and gentalia uniform grey. Rest as in female. I first found this Aleurodid on the leaves of a seedling banyan (Ficus indica) lodged on the trunk of a mango tree in the vicinity of Calcutta. I was only able to obtain some half a dozen pupe at the time. Iwas much struck by the gelatinous looking secretion of the insect. It is the only Aleurodid which I have obtained which produces such a secretion. It is possibly allied to A. gelatinosus, CkIl., although when the two insects are compared they appear to be very dissimilar. A. gelatinosus is elevated off the surface of the leaf. by its lateral fringe, not so in this species. The margin of A. gelatinosus is deeply erenulated, while in this species the crenulations are quite difficult to detect. - It differs in colour, A. gelatinosus being black: but the two J. 11,2 78 H. W. Peal—Monograph of the Oriental Aleurodide. [No. 3, species agree in producing an apparently similar substance, and the distinctive feature, the indentures on the cephalo-lateral and caudal margins with the pencils of wax issuing therefrom, are common to both. I have, within the last two years, frequently come across this species; at first only on banyan (Ficus indica) seedlings, where I searched for it ; but later on also on pepul (Ficus religiosa) seedlings as well. I find that especially after the rainy season (about October) the insect simply swarms on the young banyan and pepul plants, which spring up during the rains on buildings, rubbish heaps and the like. In the case of the pepul seedlings it is frequently associated with A. quaintance:. One peculiarity, however, is that I have only found this species on young plants, and when the two species are both present on the same plant this aleurodid is always to be found on the lower and older leaves. I have failed so far to find the insect on banyan or pepul trees, though I have frequently searched for it. So far, I have only obtained this spe- cies from two localities ; at Turkaulia, Champaran district, Behar, and in and around Calcutta. The insect is heavily parasited by a minute yellow chalcid. When parasited the dorsum becomes very convex and when the parasite pupates it can be seen quite easily within the body. Although it is to be often found associated with A. guaintancei the chal- cid parasiting A. quaintancet never to my knowledge attacks this species. — It is a pity that the insect should suffer so severely from this parasite, as it undoubtedly does some indirect good by killing off the enormous numbers of pepul and banyan plants which take root on old buildings and the like, and which would otherwise in many cases grow up and do future injury. The aleurodid is usually present in large numbers, sev- eral hundred being frequently attached to a single leaf, in the greater | number of cases eventually killing off the plant. Most of my material has been obtained from the Museum terrace. I may note that I have failed so far to obtain specimens of the 2nd stage; the stages marked 2nd and 3rd being probably the 3rd and 4th. I have much pleasure in naming this species after Major A. Alcock, I'.R.S., C.I.E., Superin- tendent, Indian Museum, to whom I am much indebted for ont ment in my entomological studies. 4, Alewrodes quaintancei n. sp. Plate V, Figs. 10-14. Ege. Size ‘18 mm. x ‘09 mm. Cream coloured when recently laid, changing later to light brown. Peduncle about one-third length of egg. The eggs are usually laid four or five abreast in a curved line. I take this opportunity of naming this species after Mr. A. L, Quaintance, to whom I am indebted for much valuable assistance in my study of this family. 7 1903.] H.W. Peal—Monograph of the Oriental Aleurodide. 79 Larva lst stage. Size ‘28 mm. x ‘9 mm, Shape elliptical, narrow for its length. Colour light yellow. Dor- sum flat: segments of abdomen fairly distinct. Four long sete cau- dad on margin. They rise from small tubercles. Between each pair is a short seta. Four pairs of short sete (four a side) placed caudo- laterally on margin and forming a continuation of the caudal sete. Lat- erally on margin six pairs of short sete (six a’side) the pair furthest cephalad longest. Six long sete cephalad on margin (three a side), of these the second pair is longest. The caudo-lateral, lateral and cepha- lic setze do not form a continous line, there being a space between each set of sete. Legs and antenne present. Vasiform orifice as in the pupa only larger in proportion, and the operculum only extends to about the centre of the vasiform orifice. Larva 2nd stage. Size ‘42 mm. x ‘3 mm. Shape elliptical, broader in proportion than the first stage. Dor- sum flat: abdominal- segments fairly distinct. Hyes maroon. Two short sete on cephalic margin, two fairly long sete: caudad on margin and two short sete caudo-laterally on margin. The setz caudad on margin spring from small tubercles. Vasiform orifice as in pupa but larger in proportion. Larva 3rd stage. Size °7 mm. x ‘53 mm. Shape elliptical, broad for its length. Colour light yellow. Dor- sum flat, sometimes slightly rounded. Thoracic and abdominal seg- ments clearly discernible. With the exception of the central area, the surface of the dorsum is covered with coarse granular striations which extend to the margin. Vasiform orifice essentially the same as in later stages. Sete as in previous stage. In some cases there is a slight line running from thorax cephalad to margin and faint indications of the two radial yellow bands running from thorax to cephalo-lateral margins. The channelled passage running from the posterior extremity of the vasiform orifice caudad to margin and the two ridges situated one on each side of the vasiform orifice and the channelled passage which are present in the pupa, first appear in this stage. Larva 4th stage: Size 1:05 mm. x ‘76 mm. Characters essentially as in pupa. Puparium. Size 1°55 mm, x 1:23 mm. Shape oval. Colour translucent white, with in most cases a tinge of yellow, two yellow pigment spots usually present on the first two segments of the abdomen. As the insect develops within the entire thorax and abdomen become yellow and opaque. Dorsum slightly con- vex, the surface, with the exception of the central area, covered with granular striatious which radiate to the margin. Abdomen and abdom- 80 H. W. Peal—Monograph of the Oriental Aleurodide. [No. 3, inal segments clearly defined. Sides and divisions of thorax apparent, the sides being bounded by a three-lobed line. Three faint lines run- ning from suture between pro and mesothorax, one cephalad and two cephalo-laterally to margin. The cephalo-lateral lines are really more or less clearly defined yellow bands. In some specimens a fairly broad distinct margin can be observed, but in others the margin gradually merges into the central dorsal area, there being no well defined inner edge. In some the margin is extremely pronounced but this is appar- ently only the case when the insect is parasitized. As in the larve of the three preceding stages there are two small sete cephalad on mar- gin and four (the two inner long and placed on tubercles) on the caudal margin. Vasiform orifice conical, apex pointing caudad; corners round- ed. Anterior margin flat. Edge of orifice tinged with brown. Cau- dad there is a channelled passage extending to margin. Operculum broader than long, nearly filling aperture of vasiform orifice. Anterior margin flat, posterior margin concave, lateral margins convex and angled inwards to posterior margin. Corners rounded. Colour brown, poste- rior edge darkest. Lingula long, cylindrical, spatulate at tip. It pro- jects about one-third its length beyond the operculum. Colour brown. There are two rounded yellow ridges which lie one on each side of the vasiform orifice. They are prolonged caudad to margin. The channel- led passage is situated between them. The two long caudal sete are situated on the end of these ridges. Small tufts of brown wax are se- creted at margin at end of these ridges and also where the cephalo- lateral bands touch the margin. There is an extremely light and nar- row marginal fringe of wax. Normally the pupa is semitransparent, flat, and its lower surface adheres closely to the surface of the leaf. The longitudinal cephalic, and radial cephalo-lateral lines are then fairly distinct. As the pupa matures the dorsum becomes convex, the central area becomes yellow and the margin turns an opaque white. - The cephalic and cephalo-lateral radial lines are then very distinct. Parasitized pupze however have an entirely different appearance. The insect is then more or less opaque, the colour ranging from a uniform yellow through shades of brown and red brown to black. Usually how- ever the parasitized pupa has two dark brown blotches one on the thorac- ic and one on the abdominal region, the rest of the dorsum being of a yellow or cream colour. When the parasite pupates it shows up as a brown and black patch within the central area of the dorsum. The dorsum of a parasitized pupa is invariably highly convex, almost globu- lar in fact. Pups from which the parasite has emerged are of a dark yellow or brown colour, while those which develop normally and from which the insects have emerged in due course are of a dull semitrans- 1903.] H.W. Peal—Monograph of the Oriental Aleurodide. 81 parent white colour. The chalcid parasitising this insect has its head and thorax black, abdomen brown. Adult female. Size 11mm. Wing 1:16 mm. x ‘52 mm. Head and thorax light brown, abdomen yellow. Ventrally last two segments of abdomen tinged with grey along centre. Legs semitrans- parent, tinged with grey, joints yellow. Eyes reniform, maroon. Wings white with three faint bands of grey running diagonally across wing. Nervure dark grey where the bands cross it. Hind wing imma- culate. Body and legs powdered with white meal. Antenne ‘32 mm. in length. Formula 3, 2, 7, (4, 5,6,) 1. The first joint is short and flat ; the second joint stout, pyriform, about three times the length of joint one; the third joint long, thin, cylindrical, about two-and-a-half times the length of joint two; the fourth, fifth, and sixth joints equal, the three together about equalling joint three in length; the seventh joint thin, slightly longer than joint six. Vasiform orifice oval, anterior edge flattened. Operculum similar in shape but slightly smaller being only about two-thirds the size of the vasiform orifice. The posterior edge is concave. Lingula long, cylin- drical, projecting about one-third of its length beyond operculum. Adult male. Length ‘95mm. Wing105mm. x ‘48mm. Anten- ne ‘25 mm. Markings of wing similar to that in female. Entire body yellow, legs as in female. Two small tubercles on last segment of abdomen just above forcipate process. I have found this species on pepul (Ficus religiosa) in and around Calcutta. It is extremely abundant after the rains (October-November). d. Alewrodes simula n. sp. Plate III, Figs. 1-14. Egg. Size ‘2mm. x ‘09 mm. Colour light yellow when first laid, afterwards turning brown. Peduncle about one-fourth length of egg. Hxamined while still within the body of the female the eggs are light yellow. The peduncle is curved inwards and pressed against the egg. Colour of peduncle pink, basal end of egg fairly dark yellow. Larva lst stage. Size ‘25 mm. x ‘15 mm. Shape elliptical. Colour semitransparent yellow; two yellow pigs ment patches in centre of abdominal region. There are a series of 34 long hairs right around margin. The four hairs furthest cephalad are grouped in two pairs placed some distance apart. Of the six hairs on caudal margin the inner pair long, the second pair short, and the third pair long. The 24 other sete are shorter than the long caudal sete, they are situated at equal distances apart on the lateral margins. Vasi- form orifice as in the pupa-case, but the operculum is larger proportion- 82 H. W. Peal—Monograph of the Oriental Aleurodide. [No. 8, ately, and the lateral margins of the orifice are somewhat incurved pos- teriorly beyond the operculum. Hyes maroon. Abdominal segments distinct. Antenne and legs present. The artist has drawn the vasi- form orifice as seen by him through the transparent body. Larva 2nd stage. Size ‘45 mm. X ‘32 mm. Shape elliptical; colour yellow. Two yellow pigment patches in centre of abdominal region. ‘Two curved hairs caudad on margin. Va- siform orifice as in the pupa-case, but the orifice is situated quite close to the margin. Abdominal segments distinct. Eyes maroon. A mar- ginal fringe of stout, cylindrical, waxy filaments which are placed quite close together. Larva 3rd stage. Size ‘7 mm. x ‘5 mm. Shapeelliptical, margin at thorax angled slightly outwards. Dorsum almost flat. Colour yellow. Two sete caudad, and two sete placed caudolaterally on margin. A marginal fringe of stout, cylindrical wax filaments. Eyes maroon. Abdominal segments distinct. Dorsum granu- lar near margin. Margin broad, faintly demarcated mesad, and deeply striated radially. There is a distinct yellow band extending from the posterior extremity of the vasiform orifice caudad to margin. There are faint indications of the two radial thoracic bands so conspicuous in the pupa. They end, as also does the band extending caudad to margin, in five separate brown horizontal pores which secrete a small quantity of brown wax. Dorsum covered with a large number of extremely minute circular pores. Larva 4th stage. Size 1:25 mm. x 1 mm. Similar to pupa-case except in size, it is also flatter. Puparium. Size. 1°86 mm. x 1°52 mm., Shape oval, anteriorly the thoracic margins angled outwards, giving the anterior end a somewhat square appearance. Colour bright yellow. Dorsum at first somewhat flat, later turning fairly convex. Three ridges on dorsum, two radiating from thorax to cephalo-thoracic margins, and one from the posterior end of the vasiform orifice caudad to margin. These ridges are dark yellow, blotched with grey. They end marginally in five stout distinct brown pores which produce a small quantity of brown fluffy wax. Margin broad, demarcated mesad by a fairly broad distinct white band the inner edge of which is dark brown. Margin with strong- ly marked radial striations, the dorsum also marked around the central area, but the markings are more granular than striated. A small quan- tity of short stout waxy filaments produced from marginal pores spaced some distance apart. ‘There are also a series of submarginal pores which produce finer and longer wax filaments. They are also spaced some distance apart. There are two small slender sete on cephalic, and two 1903.) H.W. Peal—Monograph of the Oriental Aleurodids. 83 similar but smaller sete on lateral margins. Surface of dorsum and especially of the margin covered with a very great number of extremely minute circular pores which tend to form detached groups. These pores are also present over the radial patches, but the grouping does not differ from the rest of the margin, the pores not being arranged in any sort of pattern. The margin of the pupa-case turns quite white a short time before the adult emerges. Vasiform orifice conical, apex pointing caudad. Anterior margin flat. Lateral margins sloping inwards; the sloping surface with six ridges on each side. Operculum rhomboidal; the pos- terior margin somewhat incurved. The operculum extends to about or a little beyond the centre of the vasiform orifice. Surface setose, colour light brown. Lingula two-jointed, lower joint short, stout. Upper joint club-shaped. The lingula extends for one-third its length beyond oper- culum; the surface setose, colour brown. Two long hairs spring from near the tip of the lingula and extend some distance beyond the vasiform: orifice. Pupa extracted from puparium. Head fairly broad, colour yellow, the ocelli lighter in colour. Tho- rax rather dark yellow, abdomen light yellow. Eyes dark maroon. Un- folded wings dark grey. Legs almost transparent, well formed, setose. Sides of abdomen flattened and spread out. Abdominal segments fairly : distinct but the vasiform orifice cannot be made out. Antenne not noticeable in the specimen examined. When the adult emerges from the pupa-case the dorsum splits up not only from the cephalic margin to thorax, and across the thorax, but also right round the inner edge of the margin so that in empty pupal cases the anterior portion of the dorsum is usually missing. I have observed no parasites on this species. Adult female. Length 1:9 mm. Wing. Size 1:9 mm. x ‘85 mm. Body light yellow ; antennz and legs semi-transparent white. Tip of mentum grey. A lateral grey stripe on each side of the first sexement of the abdomen, and dorsally a rather broad diagonal grey patch on each side of the same segment. Dorsally each abdominal segment dark grey nearly the entire width of the body. An oval grey plate situated on the dorsal surface of the last segment of the abdomen. It encloses the vasiform orifice. Ventrally the abdomen covered with fine short hairs. Body and legs covered with white meal. Eyes reniform almost divided ; colour dark maroon. Wingsimmaculate. Vasiform orifice broadly coni- cal, the anterior edge somewhat produced and with a flat indenture in the centre. Operculum cordate, apex pointing cephalad. Posterior margin incurved ; lateral margins dark and wavy. The operculum extends nearly the whole length of the orifice, but is somewhat narrower. Colour dark 84: H. W. Peal—Monograph of the Oriental Aleurodide. [No. 8, grey. lLingula cylindrical ; it projects to the posterior edge of the vasi- form orifice. End almost flat. Only the part which projects beyond the operculum can be made out. Colour grey. Antenne length ‘5 mm. Formula (8, 6,) (2, 4,5,) 7,1. Joint one short, flat ; joint two subpyriform, about twice length of joint one ; joints three and six equal in length, each about twice the length of joint two; joints four and five each equal in length to joint two; joint seven short, thin, and tapering to a point, about one-third length of joint six. Adult male. Length 1:‘7 mm. Wing. 1:5 mm. x ‘77 mm. Colour, etc., much as in the female. The antenne however are enormously developed, being proportionately about twice as long as those in the female. Length‘9 mm. Formula 5, 3, (6,7,) 2, 4,1. Joint five is very long, being nearly equal to all the others together. Joint one short flat ; jomt two subpyriform, twice length of joint one; joint three fairly long, one-and-a-half times length of joint two; joint four short, less than half the length of joint three ; joint five long almost equal to all the other joints together; joints six and seven equal, together about equal to joints three andfour. ‘The antenne are heavily ringed and it is extreme- ly difficult to make out the joints. The under surface of the abdomen covered with a large quantity of white fluff. This species occurs in great abundance on the Simul tree (Bombyx malabaricum) in Calcutta. The leaves are thickly covered with the insect; they become yellow and spotted wherever an insect is attached and are ultimately killed. Superficially the insect somewhat resembles A. eugeni#, Mask. There are the same radiating dorsal patches and the dorsum is similarly striated. They differ however in the shape of the pupa-case, and the shape of the vasiform orifice. A. simula has a slight marginal fringe and there are four sete on the margin. The radiating dorsal patches are quite different in the two insects. In A. simula these patches are not formed by closely apposed pores but are yellow bands striated with grey. The thoracic radial patches are also true ridges, being elevated above the surface of the dorsum. All three pat- ches in this species end not in a single aperture or pore opening dorsally, but in five stout brown horizontal pores which secrete a small quantity of fluffy brown wax. The dorsum in this species is covered with a large number of extremely minute circular pores; the margin is also broad and clearly defined. Mr. Maskell was mistaken in assuming that the three radial patches were sufficient evidence to prove the close relationship of A. eugenix# and A. eugenix var, aurantii, Asa matter of fact many of the Indian Aleu- rodidg possess this characteristic, however widely different they may otherwise be, 1903. ] H. W. Peal—Monograph of the Oriental Aleurodide. 85 Aleurodes bambuse n. sp. Plate IV, Figs. 1-9. Ege. Length ‘25 mm. x ‘11 mm. Colour light brown. Surface sculptured with hexagons, Attached in an upright position to leaf by a short peduncle. Larva Ist stage. Size *35 mm. x ‘2 mm. Shape elliptical; narrow for its length. Colour deep black; dark brown under the microscope. The decent 18 completely hidden by a quantity of white fluff which is produced by a series of submarginal pores. There is an elevated mesio-dorsal ridge extending anteriorly almost to the margin and posteriorly to the vasiform orifice. Segments of abdomen fairly distinct. Margin crenulated, bearing a series of closely apposed pores which produce a regular but somewhat short hori- zontal fringe. Ventrally just within the margin a series of pores which produce a scanty white secretion. There are four long sete on cepha- lic and four on caudal margins, On the dorsum there are four long stout curved spines which are situated a pair on the cephalic and a pair on the anterior edge of the abdominal region. They are placed on the sides of the medio dorsal ridge. The spines point backwards. Each spine is about half the length of the body, the anterior pair being slightly longer. Two short stout curved spines are situated one on each side of the vasiform orifice. Vasiform orifice large elevated on a tuber- cle. It is apparently similar to that in the puparium but owing to the colour is difficult to make out. Larva 2nd stage. Size 55 mm. x °3 mm. - Similar except in size to larva 3rd stage. Larva 3rd stage. Size 1 mm. X °55 mm. Shape elliptical, somewhat broader proportionately than in the first stage. Colour dense black. There isa distinct mesio dorsal ridge which is somewhat slighter than in the preceding stage. Abdominal segments distinct, Area surrounding vasiform orifice darker than the rest of the abdomen. Margin broad crenulated. Mesad the margin ends ata broad ridge which separates it from the rest of the dorsum. Along its edge are a series of large closely apposed pores which produce a short but abundant horizontal fringe of wax. The upper surface of the margin bears a large number of extremely minute pores. These pores produce a quantity of white fluffy wax filaments which curve inwards and cover the dorsum. Ventrally a little within the margin there area series of pores which produce a small quantity of wax. The dorsum is covered with a number of stout spines. There are: a pair on the cephalic region at end of mesio dorsal ridge and nearly on the margin; two pairs placed fairly close together on the cephalic region ; a pair placed widely apart on the thoracic region ; immediately behind this pair there J, mu. 18 86 H. W. Peal—Monograph of the Oriental Alewrodidse. [No. 8, are two pairs placed fairly close together on the lower edge of the mesio dorsal ridge; a pair of spines on each of the 8rd, 4th, and 5th abdom- inal segments ; and two stout curved spines, one on each side of the vasi- form orifice. There are two short sete, one on each side of the vasiform orifice and two fairly long sete caudad on margin. The vasiform orifice as in preceding stages, but in some specimens the lingula appears large and dumb-bell shaped. Larva 4th stage. Size 14mm. x ‘9 mm. Shape elliptical, anterior edge abruptly conical. Colour dense black. Mesio dorsal ridge as in preceding stages. A broad crenulated margin which ends mesad in an elevated ridge which separates it from the rest of the dorsum. The margin ends in a series of large closely apposed pores which produce a short thick marginal fringe of white wax. The upper surface of the margin is covered with a large number of minute pores which produce a quantity of white fluff, which curving inwards covers the dorsum. Segments of abdomen distinct. The dorsum is covered with a large number of stout spines which lie: five pairs on the cephalic region ; four pairs on the thoracic region, and five pairs on the abdominal segments. There is also a stout curved pair situated one on each side of the vasiform orifice. There are two short sets, one on each side of the vasiform orifice and a slightly longer pair caudad on margin. Vasi- form orifice large in proportion to its size as compared to the vasiform orifice in the puparium. Puparium. Size 2°] mm. x 1:4 mm. Shape elliptical, broadest caudad. Colour dense black. Distinct mesio dorsal ridge which is narrow and sharp anteriorly, and broad and rounded posteriorly. From this ridge there are a series of five ridges which mark out the abdominal segments. Margin broad, crenulated ; bearing on its upper surface a large number of minute pores ose ‘produce a quantity of white wax filaments which curling inwards con- ceal the dorsum. There are a series of closely apposed marginal pores which produce a short but abundant horizontal secretion of wax. There are ventrally on margin a series of pores which produce a small quantity of wax. The dorsum is covered with a large number of short but stout spines. These spines are grouped as follows. There are thirty hooked spines forming a ring around the dorsum just within the margin. The other spines are shorter and are situated as follows. A double row of eight spines across the cephalic region; four spines on the thoracic re- gion ; sixteen spines in a row down the mesio dorsal ridge on the abdom- inal region; two rows of three spines, one row on each side of the mesio dorsal ridge on Ist and 2nd abdominal segments ; two rows of two spines placed similarly on third and fourth segments and one spine on each 1903.] H.W. Peal—Monograph of the Oriental Alewrodide. 87 side of the mesio dorsal ridge on the 5th segment. A pair of short stout spines placed, one on each side of the vasiform orifice. Two long sete caudad and two cephalad on margin. The vasiform orifice is situated on a short tubercle at the posterior end of the mesio dorsal ridge. Shape oval. Operculum similar in shape but somewhat smaller, the lower half apparently slightly ridged. Lingula indistinct, shape rectangular, broader than long. It is completely covered by the operculum. Adult form unknown. This Aleurodid occurs plentifully on various species of bamboo in the vicinity of Calcutta. As arule only a few leaves in a bamboo clump are attacked by the insect. I have, however, sometimes found it occur- ring in:very large numbers in some bamboo clumps. It then undoubt- edly is a rather serious pest as frequently most of the leaves. are then _ killed. The insect is kept in check by a parasite, presumably a chalcid, as large numbers of dead insects can always be found which have the minute hole on the dorsum made by the parasite for its exit. I have so far obtained no specimens of the parasite. When this aleurodid is detached from the leaf it will be observed that the portion of the leaf beneath the insect is yellow and discoloured. As a-rule the exuvie of the preceding stages remains attached to the spines on the dorsum. -Aleurodes leakit n. sp. Plate V, Figs. 4-5. I obtained specimens of this insect off both Natal (I. arrecta) and ordinary indigo (Indigofera- tinctoria) at Dalsing Serai, Behar, in the month of May 1902. As seen with the naked eye the pupex and larvee are yellowish in colour. I noticed one peculiarity with regard to this species; the scales invariably occur on the upper surface of the leaves. This is rather an unusual feature. The insect itself was not common enough to constitute a pest. It may possibly however at other times of the year be present in larger numbers and so prove a factor amongst the numerous insect pests indigo has to contend with. I have found it to be far commoner on Natal than on ordinary indigo. Consid- ering that in the future the Natal plant will almost certainly be grown toa large extent owing to its superiority over the ordinary indigo the sup- pression of this pest may at some time have to be taken in hand. The scales themselves as a rule occur rather sparsely, two or three on each leaflet. I have however occasionally found them in fairly large num- bers on single leaflets. Egg. Size :2 mm. x ‘1 mm. Colour yellowish brown. The egg is attached to the leaf in an up- right position by a short peduncle or stalk. _ Larva probably 2nd stage. Size 1:05.mm. x *76.mm. - Shape elliptical; colour whitish-yellow, a few yellowish- brow 58 H. W. Peal—Monograph of the Oriental Aleurodide. [No. 3, marks along the centre of dorsum: dorsum covered with coarse granula- tions. Segments of body more or less distinct along dorsum. Margin of case broad, crenulated ; there is no wax fringe. Dorsum flattish, sometimes slightly convex. Vasiform orifice conical, very much elonga- ted, anterior edge concave, sides emarginate. Abdomen distinctly cleft from the vasiform orifice to the posterior margin, the edge of which is slightly incurved to meet the cleft; the vasiform orifice is over one- half the length of the cleft. Operculum attached anteriorly to vasiform orifice, sub-elliptical, broader than long, Lingula narrow, broadest at tip, narrowest a little above the middle. ‘Tip conical, projecting beyond operculum about one-and-a-half times the length of the operculum. It is slightly shorter than the vasiform orifice within which it les. Larva. Last stage. Size 1:1 mm. x ‘76 mm. Shape elliptical. Dorsum almost transparent. Segments more or less distinct along dorsum. Insect itself more or less distinct beneath the dorsum. Colour of maturing insect orange to yellow, eyes maroon. Margin of dorsum broad and transparent, the rest of the body faint greenish-yellow. Vasiform orifice lemon-yellow the operculum slightly darker in shade. Lingula similar in colour. Vasiform orifice opercu- lum and lingula as in preceding stage. No trace of sete or hairs, either on dorsum or on margin of body. Margin extremely flat, the dorsum rises with a slight curve from margin. Puparium. Size 115 mm. x ‘84. mm. Colour translucent, faintly tinged with yellow. Insect itself clear- ly discernable beneath the dorsum; colour yellow, eyes dark red. The rest as in larval stages. Adult female. Length ‘85mm. Wing 105 mm. x ‘35 mm. Colour of body brownish-yellow ; legs and antenne yellow. Length of antenne ‘22 mm., seven jointed: joint one short, subpyriform : joint — two stout, slightly longer than joint one: joint three two and a half times length of joint two: joint four short, less than one-third joint three in length: joints five and six equal, slightly shorter than joint two: joint seven long and tapering, half the length of joint three. Wings immaculate. Eyes reniform, undivided. I have been unable to obtain specimens of the adult male. I have much pleasure in naming this species after Mr. H. M. Leake, who assisted me in collecting specimens and was kind enough to mount examples for the microscope. Aleurodes hoye n. sp. Plate V, Figs. 1-3. This species is fairly common in and around Calcutta on Hoya sp. I have observed it in the years 1900, 1901, and 1902. Although it is 1903.] H.W. Peal—Monograph of the Oriental Aleurodide. 89 comparatively easy to obtain larvae and pupa I had the greatest difficul- ty in rearing adults as nearly every one of the many hundred pupex I have examined was parasited ; the parasite, a minute hymenopteron (a chalcid) cutting a neat circular hole on the dorsal surface of the puparium when escaping. This species is I believe unique in having the wings of the adult of a uniform plum-blue colour. Owing to this peculiarity it has a remarkably moth-like appearance. Egg. Size ‘25 mm. x ‘1 mm. Light brown, curved, surface sculptured with lines forming irregu- lar hexagons. Peduncle one-sixth length of egg. Larva first stage. Size *9 mm. x °68 mm. Shape elongate elliptical. Colour light yellowish-brown, At this stage the larva is somewhat dissimilar in appearance to more advanced larve, the larva being in some cases comparatively narrow and long. Dorsum flat and minutely granulated. There is a slight dorsal ridge. Larva 2nd stage. Size 1'4mm. X 1:2 mm. Shape elliptical. Colour light-brown. Dorsum flat and granular. There is a delicate series of marginal wax tubes from which a small quantity of wax filaments extrude; filaments short. Vasiform orifice similar in shape to that in the third stage. Operculum darker in colour then the rest of the body. Caudal margin slightly incurved, with two wax tubes which are larger than those on the margin, situated one on each side of the curve. ‘They produce two fairly long wax filaments. Larva 3rd stage. Size 16mm. x 14mm. Colour from light to dark-brown ; centre of dorsum darkest, there being a wide band lighter than the centre along edge of dorsum. Shape elliptical, flattish. Broad medio dorsal ridge on which the abdom- inal and thoracic segments are clearly discernible. Dorsum granular in appearance. The centre of dorsum has small circular granulations, those on the outer edge being coarser and oval in shape. A series of minute closely apposed wax tubes along margin. There are sometimes traces of a waxy fringe. Vasiform orifice cordate; anterior margin flattish or slightly incurved. Operculum similar in shape and extend- ing almost to the caudal extremity of the vasiform orifice. Edge of vasiform orifice tinged with brown as also the operculum. Puparium. Size 1°62 mm. x 1°43 mm. Colour black. Shape elliptical. Some specimens, however, are al- most circular. The dorsum is granular and rounded. The medio-dorsal ridge so conspucuous in the larva is far less prominent though still dis- cernible. Margin flat and extremely narrow. Vasiform orifice cordate, anterior margin flattish. Owing to the extremely dense black colour of the dorsum it is difficult to make out the details of the vasiform orifice 90 H. W. Peal—Monograph of the Oriental Aleurodidee. [No. 3, even after boiling in caustic potash. It however appears to be similar to that in the larva. Adult female. Size 1:85 mm. Wing 1:55 mm. x ‘67 mm. Body brown. Legs and antenne yellowish-brown. Eyes reniform, dark red-brown in colour. Antenne ‘63mm. Seven jointed. Joint one short subpyriform ; joint two stout, one and a half times the length of joint one ; joint three long, cylindrical, about twice the length of joint two; joint four short, slightly shorter than. joint two; joints five, six, seven equal, each about half the length of joint three. Vasiform orifice obovate, operculum small; anterior and posterior margins flat, lateral margins curving outwards from anterior margin and incurving to meet posterior margin. Lingula V shaped, upper extremity broadest, nar- rowing in centre and broadening out slightly at tip. The tip itself is conical, It projects slightly beyond vasiform orifice; wing purplish- blue in colour, having a bloom on it like that seen ona plum. Edges of the wing reddish along margin. A series of closely apposed globular projections each bearing two delicate sete. I only succeeded in rearing three adult females. I have never ob- tained the male. Cuaprer VI. Description of Aleurodide previously described from the Indian Region. Only a few species of this family have been described so far from India and Ceylon. For the sake of convenience I have thought it ad- visable to include the full descriptions. The following species have so far been described. Alewrodes eugenixe Mask. Aleurodes eugenix Mask. var. auranti Mask, Aleurodes barodensis Mask. Alewrodes cotesii Mask. Alewrodes piperis Mask. Aleurodes nubtlans Buckton. * Three other species in all have been described from the Oriental Region. Silajit : an ancient Eastern Medicine—By Davin Hooper, F.C.S. [Received 29th April 1908. Read May 6th 1903.] One of the most peculiar medicinal substances of the Hast is that called Silajit or Shilajaju. It is known by the former name in Hindi and Persian, and by the latter in Bengali and Sanskrit. The meaning of the term is derived from Sila=a stone, and yatw=produce or essence. It may therefore be regarded as a substance born of the rock, essence of stone, or, more literally, “‘ rock sweat.” The localities in which this article is reported to be Foul are con- fined to Northern India. It is obtained from the lower, central and upper ranges of the Himalayas and the Vindhyan hills, and is procurable in Simla, Mussoorie, and Katmandu. In Vadarikasvan, near Hardwar, a sacred retreat at the foot of the Himalayas, it is fairly abundant. It is brought down by Bhuteas and other hill tribes, and sold with such com- modities as brick tea, incense, gums and precious stones. The occurrence and formation of silajit is at present somewhat ob- scure. It appears as an exudation upon rocks, and, according to report, is contained in the substance of the rock. Silajitis collected during the hot weather in May and June, the heat of the sun is said to be necessary in drawing out the extract from the rocks. In Sanskrit works it is stated that silajatu imbibes the therapeutic properties of the metals with which it remains associated. The black variety, which is the most commonly available, is said to possess the properties of iron, and the white variety is said to exert the peculiar action of silver, The manner in which this exudation occurs, and the kinds of rocks. which afford it, are matters requiring investigation. The collection is in the hands of shepherds and nomadic tribes, who can, of course, furnish no intelligent 1903.] D. Hooper—Silajit : an ancient Hastern Medicine. 99 account of its nature, or explain its origin with any degree of satisfac tion. Before describing what is at present recognised as medicinal silajit, it will be convenient to allude to the varieties of substances under this name which have been seenuignod 4 in Indian works or met with in the bazars. In the first place, there is a kind of silajit which is of a mineral nature, and is amore or less pure native aluminium sulphate. This was described in 1833, by Mr. J. Stevenson, Superintendent of the Behar Saltpetre Factory (Jour. As. Soc. Beng. II. 321). It was found in Nepal, and was widely used as a medicine to cure green wounds and bruises, It occurred in small brownish-white lumps with a semi-crystalline struc- ture internally. It consisted of 95 per cent. of aluminium sulphate with 3 per cent, of iron. It sold for the high price of two rupees for a rupee weight. In the same year Dr. A. Campbell, in a letter to the Asiatic Society, (Jour. As. Soc. Beng. II. 482) confirmed the existence and use of the alum earth, and stated that the average qualities con- tained only 66 per cent. of aluminium sulphate. The price of the product at Katmandu was from Rs. 11 to Rs. 15 amaund, but sold as a drug in the bazar, its price was purely fanciful. The rocks, it was suggested, might be lixiviated and be made to yield a larger supply, but it is very impro- bable that it could be obtained in sufficient’ quantities to be of commer- cial importance. Mineral silajit was again referred to in 1846, by Capt. Sherwell i in his account of Behar (Journ. As. Soc. Beng. XV. 58). This officer re- ported that a small quantity of alum was manufactured from shales in the Shahabad District ; these rocks probably belonged to the pyritous shales of the Kaimur group of the Vindhyan series. The alum was sold at the high price of one rupee a tola. It was identical with the silajit-. of Nepal and was much esteemed as a drug. : - That the mineral silajit does not all come from Nepal is confirmed by Dr. Hamilton in his account of Nepal, where he says: ‘‘I have collected Salajit in Behar with my own hands.” In the ‘“‘ Economic Geology of India,” it is recorded that alum exuda- tions or silajit are sometimes collected by the natives of Assam. - More recent geological investigations in India have not brought to light any fresh information regarding this aluminous mineral under the name of silajit, and although fresh deposits have been discovered, such as those in Baluchistan where it is called ‘ Phul- Mak,” they have not been regarded as medicinal. The second variety of this Miccies called Black Silajit, is quite. a different article to that just described, Itis.sold in the bazars of Calcutta, 100 D. Hooper—Silajit : an ancient Hastern Medicine. [No. 3, in Dehra Dun and Hardwar. The Kabirajis are aware of the distinc- tion between the two products, and hold out a warning that the Nepal alum earth is not the silajit of Sanskrit writers; they state that the for- mer is an article of Yunani medicine, while the latter, or black kind, is only suitable for Hindu practitioners. Dr. Campbell appears to be the first to Ree racks between the two drugs. He says (Jour. As. Soc. Beng. II. 483): “There is a dark bitu- minous substance used in Nepal, said to exude from rocks, and is called “ Black Salajit.” It resembles bituminous alum ore, but there is much vegetable matter in it, and it is probably a vegetable production, notwithstanding the belief by the Nepal physicians of its mineral nature.” Black silajit is sold in the form of brown or black cakes, tough or pasty in consistence, and having an odour of rancidity which has been stated in Sanskrit works to resemble that of cow’s urine, The usual odour is that of leather. Its taste is bitter, saline, pungent and astrin- gent. The partially purified specimens of this black substance, as brought down by the Bhuteas, are in the form of rounded flattened cakes about 25 inches in diameter and half an-inch thick, or in sticks resembling liquorice juice. Silajat is hygroscopic, and when exposed to a damp at- mosphere becomes unctuous and sticky. In a dry state it is quite hard, and breaks with a shining black fracture, and in course of time some samples assume a brownish crystalline efflorescence on the surface. Black silajit is soluble for the most part in distilled water, yielding a dark reddish-brown extract with an alkaline reaction. Ether, alco- hol and other volatile liquids have little or no solvent action upon it. In one case ether extracted a small amount of a fatty compound having an odour of Russian leather. The aqueous solution is precipitated by mineral acids, plumbic acetate and ferric chloride, but not by acetic acid or alkalis. The aqueous solution is not precipitated by four volumes of alcohol. The organic matter is of the nature of an organic acid, and, in the specimens I examined, not one was of a bituminous nature. There is a large quantity of mineral matter or ash left on incin- erating the samples, and as this consists mainly of carbonated alkalis, it is indicative of the presence of one or more organic acids combined with bases in the orignal extract. In Dr. U. C. Dutt’s “ Materia Medica of the Hindus,” p. 95, it is stated that the ashes left after burning silajatu on platinum foil, consist chiefly of lime, maguesia, silica, and iron in a mixed state of proto- and per oxide.” It is said by the nativedoctors that the mineral constituents are regarded as impurities, and that the active prin- ciple is a cream-like body which rises to the surface of the liquid when the solid silajit is dissolved in hot water. The solution is placed in the 1903. ] D. Hooper—Silajit: an ancient Hastern Medicine. 101 sun until it thickens, the surface is removed, and this swt-silajit is allowed to dry. That there is no uniform combination between the organic and mineral constituents is shown in the analysis of two specimens of black silajit supplied by two Kabirajis of Calcutta. No. 1. Water 7:95 Organic matter 30°05 Mineral matter 57:00 100:00 Ash soluble in water 10°90 soluble in acid 15°55 insoluble 30°55 No. 2. 9°34 55°36 35°30 100°00 24:4, 9°4, 15 A more complete examination was made last year of four addition- al samples: No. 1, round cakes from Calcutta; No. 2, long flattened cakes from Calcutta; No. 3, from Jaunsar, through the Director Imperial Forest School, Dehra Dun; No. 4 from Bashahr Forest, Punjab, through the Curator, Imperial Forest Museum. 1 2 3 4 Water 9°85 15:90 1115 =. 10°99 * Organic matter 56°20 49°86 51°55 56°86 ft Ash 34°95 34:24 37°30 32°15 100-00 10000 100-00 100-00 * Including nitrogen 1:03 *82 3°25 1°26 + Containing Tron and alumina 2°24 1:08 6:00 4°64: Lime 4°36 3°96 3°86 3°88 Magnesia 1°50 52 15 1°34 Potash 9:07 6°69 3°71 6:10 Soda 4°11 7°63 1:07 ‘81 Phosphoric acid "16 *25 27 20° Sulphuric acid 58 "24 "B4 14, Chlorine ‘07 12 ‘ll 06 Carbonic acid, &e. 11°51 12:13 3°69 4°83 Silica 1°35 1°62 - 18°10 10°15 The chief ingredients of the ash are the bases lime, magnesia, potash and soda, combined as carbonates. The absence of a large iron and alumina precipitate indicates the non-identity of this substance with the mineral silajit of Nepal and Behar. J. ur. 15 | 102 D. Hooper—Silajit : an ancient Eastern Medicine. [No. 3,. The bulk of the organic material consists of an acid which is: related to humic acid, a principle which by the way is not usually administered by the general practitioner. When the aqueous solution is precipitated by hydrochloric acid, and the precipitate washed and pressed, it readily dissolves. in warm alcohol. The lead salt of the organic acid separated from the filtered solution, washed and dried, afforded 54°91 per cent. of lead oxide. Heated in a dry test tube, the silajit evolved white alkaline fumes with a strong empyreumatic odour. The crystals formed on the surface of cakes of black silajit are those of potassium and sodium carbonate. There are a few points of resemblance between this article and the. minerals belonging to the oxydised hydro-carbons, | Dopplerite, for instance, (Ber. Akad. Wien. 2.287, 1899 ; 52.281, 1865)is an acid substance or mixture of different acids related to humic acid. It is insoluble in alcohol and ether. Theash ranges from 3 to 14 per cent. It is found in peaty beds, and shows the transition from peat to coal. It will be necessary in a few words to refer to the third kind or white variety of silajit. Alum earth is sometimes supplied for this substance, but only as a fraudulent substitute. The original white silajatu is said to be obtained from crevices of rocks in the vicinity of Mount Abu, and this variety is used largely in Rajputana. A sample of white silajatu from Jeypur was shown to me two years ago. It was. a cream-coloured crystalline compound with a strong nauseous odour. It was apparently of animal origin, and evolved gaseous ammonia when mixed with slaked lime. It yielded 64 per cent. of pure urea when determined from the amount of nitrogen given off by means of hypobromate of sodium. It was, therefore, crude urea or inspissated urine in a solid state. A reference to Taleef Shereef or Indian Materia Medica, — edited in 1833 by Dr. George Playfair, throws some light upon this source of the drug. Art. 577, ‘“‘ Silajeet is the urine of the wild hill-goat, which, when the animal is rutting, is discharged on the stones and evaporated by the sun’s heat. It is found in small quantities. Some have said it is the urine of the wild ass, found’as above. ” rey i In the Makhzhan-ul-adwiyah, a Persian work on Materia Medica of great antiquity, it is said that. silajit is generally found among the haunts of monkeys, and that the drug is. the alvine discharge of a certain species with a black face and long tail. It distinguishes between - the salajit-t-asli, a black gummy inodourous substance, and salajtt-1-naglz, the evacuated substance with a nauseous odour and hard consistence. The medicinal virtues of silajit are set forth in the Makhzan-ul-adwiyah. Charaka, Susruta, Bhabaprokasha, and Bagbhata’s Rasartna samuchchaya. * 1903. ] D. Hooper—Silajit : an ancient Eastern Medicine. 103 It has heating properties, and is used in piles, leprosy, pleurisy, worms, asthma, gonorrhea, and it is a specific for debility and for kidneyand bladder diseases. Dr. Hem Chandra Sen, in a recent paper on “‘Shilajatu” in the Indian Medical Record, for 14th and 21st May, 1902, recommends it as digestive and laxative, suitable for dyspepsia, diabetes, diseases of the liver aud spleen, to regulate the action of the heart, and as a good respira- tory stimulantand expectorant. And finally, itis said to be asheet anchor in diseases of the genito-urinary organs and of the nervous system. The Taleef Shereef says: “It is one of the most powerful remedies, and is stronger than any other ingredient in whatever formule it may form a part. It is the favourite medicine of all Hindu physicians.” The author of Charaka says that there is no curable disease which will not yield to shilajatu in judicious combination with other drugs. The medicinal uses of silajit are hence most varied, and it is difficult to realise what active therapeutic principles can affect this long list of ailments. Before European physicians can prescribe white, black, or brown silajit for any disorder, we must ascertain more exactly the nature of the chief ingredient, and be: able to procure a regular supply of a uniformly prepared medicine. It is open to reason that no drug will become popular if no guarantee be given as to whether it belongs to the animal, vegetable or mineral kingdom. | Silajit is allied to another ancient drug named momiyia which has long been employed in the East. The original drug is said to have been made from Egyptian mummies, and subsequently to have been prepared by boiling down and extracting the essence of Abyssinian boys, - ‘Since the last source of supply has become scarce, several bituminous exudations are reported to have been substituted. There is little doubt that some forms of silajit may be entered in this category. In conclusion, it will be necessary to alter the definition of this substance given in Indian glossaries. In a geological work it is called ’ “ Alum,” ahd in more than’ one medical work it is termed “ Bitumen; ” but, from the evidence collated in the above notes, it is also an extractive matter containing an organic acid combined with alkalis, as almost completely soluble in water: | ~~ EE EES OOS eS 104 E. P. Stebbing—Discovery of Thanasimus sp. prow. nigricollis. [ No. 3, A note on the discovery of Thanasimus sp.! prow. nigricollis in the N.-W. Himalayas with some remarks on its life-history.—By E. P. Sressine. [Received May 27th, 19083—Read June 3rd, 1903.] In June 1902, whilst touring in the Tehri Garhwal forests in the N.-W. Himalayas, the writer discovered and took a number of specimens of both larvee and beetle of a species of Thanasimus prox. nigricollis Lewis, a beetle belonging to the family Oleridx. The insect was submitted to the well-known specialist, the Rev. H. S. Gorham, who has reported that, with the exception of a few minute differences which will require com- parison with the types to settle, the insect is identical with G. Lewis’ T. nigricollis, taken by the latter in Japan and described in the Ann. Soc. Nat. Hist., Vol. X (1892), p. 187. It is owing partly to these minute differences to its greater size and perhaps to a certain extent to the fact that there appears to be a curious close relationship between the insects found in parts of Japan and some of those of the N.-W. Hima- layas, that I at present put the species as prox. nigricollis. In the case of another predaceous insect a Niponius (the first species of which genus were found by Lewis in Japan) the N.-W. Himalayan one has proved to be a different species to Lewis’ Japanese ones. I think it may be shown that the discovery of this Tlncnslage is one of very considerable importance, since it is predaceous upon several bark and wood boring Scolytidz which have been recently discovered to commit serious damage in the coniferous forests of the N.-W. Himalayan area. My observations tend to prove that it takes the place in this region of the well-known Thanasimus formicarius of the European coni- ferous forests. This latter clerid preys upon (to mention but two) the larve and adults of Myelophilus piniperda and M. minor which are amongst the principal scolytid enemies of the European pine forests, — and is in consequence very rightly looked upon as an insect ally of the greatest value to the forester in those regions. So great, in fact, is the value attached to its predaceous habits that it was imported into some of the coniferous forests of North America in 1892. The initiation of this experiment, the first of its kind to be undertaken on a larger scale (in forest areas), came about in the following manner:—Between 1900 and 1902 the pine trees in portions of Hampshire, Hardy, Grant, Pendleton, and Mineral counties, West Virginia; Bath, Highland, Augusta, and Rockingham counties, Virginia and also in portions of Maryville, died off in large numbers, the destruction being widespread and in some places universal. This wholesale mortality was soon traced to its origin, as countless numbers of small bark-beetles were found i Clerus sp. Steb. Dept. Notes Ins. aff, For. No. 2, p, 213 (1903). 1903.] E. P. Stebbing—Discovery of Thanasimus sp. prow. nigricollis. 105 breeding in the bark of the trees, the depredator being Dendroctonus frontalis. So greatly had the insect increased that healthy trees were attacked equally with sickly ones. Dr. D. A. Hopkins, Entomologist to the West Virginia Agricultural Experiment station, made several tours of examination of the infected areas, and his observations showing him that there were no predaceous or parasitic insects of sufficient impor- tance in the forests to cope with the attack, he suggested the importation of some Huropeanones. A study of the question narrowed this suggestion down to the experimental introduction of T. formicarius, and with assist- ance of some of the great Lumber Companies, who were being seriously affected by the widespread deaths of the trees in large areas of forest owned by them, funds were made available to enable Dr. Hopkins to visit some of the European coniferous forests with a view to the collec- tion of the clerid and its importation to the other side of the Atlantic. This experiment was conducted toa satisfactory conclusion. I think the above short note will prove that the discovery of the presence of a simi- lar insect in the great and important coniferous forests of North Western India is not without a considerable economic as well as scientific value. I give the following descriptions of the adult and larva :— Beetle. Elongate stout and robust. Head and antennae black. Antenne 11 jointed with joints slightly increasing in width upwards, the last three forming a small club, the last joint of which is largest. Prothorax black and hirsute dorsally. Elytra under the prothorax broad, and rounded at their apices; red on the basal quarter of their length, then black, the black being twice crossed by white wavy bands, the first a narrow one just above the juncture of the black with the red colour, this band being reflexed backwards towards the apex and not upwards as in formicarius and in other species, and the other a broad one placed about # of their length up from the base. There is also a small white patch at the extreme apex. Legs black. Abdomen a bright vermilion red, its segments very mobile. Body somewhat short, flattened, pubescent. Long ¢o& 75-9 millim. ¢ 9-11 millim. I would suggest, with Mr. Gorham’s permission, that the species, should it prove new (at this distance from the types I am unable to speak with any certainty upon this point) should be named himalayensis since it would be useful to mark the locality where so important an insect to foresters was discovered. Larva. General colour a bright pink. Head brown, flat, man- dibles black. A brown dorsal patch on Ist thoracic segment and pair of brown spots situated dorsally on each of the two succeeding seg- ments. These thoracic segments a paler pink than the following abdominal ones. Latter nine in number, bright pink to reddish pink 106 EH. P. Stebbing—Discovery of Thanasimus sp. prow. nigricollis. [No. 3, except last which is narrower and brown posteriorly and terminates in two small black processes. The larve tapers anteriorly and has three pairs of legs on the thoracic segments and no others. It is slightly lighterin colour beneath. Long. 15-18 millim. (varies). A single speci- men of the beetle was first taken on the 16th June at Kathian, in the Jaunsar Hills, but it was not until the 24th of the month that the insect was secured in any numbers; this was in the forests round Pajidhar in Tehri Garhwal. Some deodar fellings were being carried out in these forests, and trees, cut at the end of April and still lying unbarked upon the ground, were found to be full of the larve and adults of two recently discovered bark-boring Scolytidee, Scotylus major and S. minor, Steb. MS. The Thanasimus was discovered in some abundance, flying about over the trees or running about on the bark, whilst in the beetle and larval galleries beneath the latter its pink-coloured larve were numerous. Before describing the tife-history of the clerid, it will perhaps be advisable to describe the state of affairs at Pajidhar. It has been mentioned that deodar fellings had commenced towards the end of April, and were still being carried on at the time of the writer’s visit. The trees cut were not barked, or in any way touched, until converted into timber—chiefly sleepers. They therefore lay several months in the forest. The scolytid beetles above referred to commence laying the eggs of the first generation of the year towards the end of April or beginning of May. For this purpose they require the fresh bast layer of the deodar, preferring sickly trees and, more especially, newly felled ones in which the upward flow of sap hasceased. Failing such they will attack young, green, healthy trees. At Pajidhar the fellings had com- menced at a most opportune time for the bark-borers and large num- bers of females were attracted to the newly felled trees and at once burrowed into them and oviposited. Towards the end of June the larve from these eggs were full grown, and in many cases had changed to the pupal state. The larve were being attacked by the predaceous clerid grubs. A curious point about the life-history of these scolytid beetles, is that the female does not die as soon as she has finished laying her eggs, but remains in the long egg-gallery she bores in the bast layer and sap wood parallel to the long axis of the tree, or in the entrance gallery in the bark, and lives here until the larve are full grown, at times going up to the outside. When she finally dies she does so near the entrance hole, thus effectually blocking it up and preventing predaceous enemies from entering and feeding upon the pupe at the end of the larval burrows. It would appear probable that this prolongation of life after oviposition is in some way connected with the protection of the young larve. It was upon these female scolytid beetles that the adult clerid was feeding. 1903.] E. P. Stebbine— Discovery of Thanasimus sp. prow. nigricollis. 107 Life History. Itis possible that the Thanasimus is to be found on the wing more or less continuously from spring to the end of autumn in the lo- calities which it affects, The eggs have not yet been discovered, but they are probably laidon the bark of thetrees near or in the entrance holes of the bark beetles, and the young larve, or hatching out, make their way down these tunnels into the egg galleries in the bast and sap wood and from thence into the larval galleries. My observations up to the present have shown that larvee of all sizes are generally to be found in these situa- tions between May and October. The length of time spent in the larval stage is at present unknown, but it is unlikely to be more than'a month in the case of the summer generations. On becoming full grown the grubs go into the thick ‘outer bark of the tree to pupate. This is to facilitate the beetle when mature leaving the tree. The adult never enters the tree. It is a brightly-coloured, very active insect, running and flying well even in hot sunshine, and: it spends its life flying round or running about on the bark of the trees. Its food consisting of bark and wood boring Scolytidz, it searches for these on the bark, since it is much too bulky to enter their tunnels, and seizes them whilst they: are engaged in either boring into or tunneling their way out of the tree. In the case of the Scolytus major and minor beetles, upon. which it was preying when discovered, it would appear that they form its food for some weeks or months during the year, since they remain alive after ege- laying and until the larve are full grown. The mother beetles spend their time walking up or down the egg-gallery, or going up the entrance hole to the outside and the Thanasimus watches at the mouth of these holes and seizes and devours the beetles when they appear at the mouth of the tunnel. They only feed upon living beetles, and will not touch dead ones, and they catch their prey by sight only and not by scent: unless the bark beetle is right in front of them they will pass it by unnoticed. I was able to definitely ascertain this point by a number of experiments. Beetles kept for twenty-four hours without food pass- ed close to their prey without_noticing it although they were in a ravenous condition. It would appear that they only see directly in front, and this is borne out by the position of the eyes which are placed rather forwardly upon the head. When, however, the scolytid comes within their range of vision they pounce upon it, just as a tiger does, with one rush and if out of its hole the bark beetle has not the remotest chance of escape. I have not been able as yet to observe whether they ~ ever take their prey upon the wing. ‘The clerid seizes the bark-borer with its anterior legs and mandibles, picks it up off the ground, turns it round so as have the ventral surface facing it with the head upper- most, sits well back on its hind legs and commences to feed upon its 108 EK. P. Stebbing—Discovery of Thanasimus sp. prow. nigricollis. [No. 3, prey, whose struggles are quite ineffectual in that deadly grip. In commencing to devour the scolytid it invariably begins with the head ; it fastens its mandibles round the junction of the head and prothorax, following the parallel of the tiger, and chews and sucks at the head until it has finished this completely. It next goes to work on the prothorax, piercing with ease through the hard chitinous shell with its powerful mandibles and breaking it to pieces, the contents being entirely cleaned out and consumed, for the beetle is a neat feeder, and entirely clears the meat off the chitinous bone before rejecting it. Having finished the prothorax, it throws away the mangled shell and turns its attention to the body consisting of the meso- and meta-thorax and abdomen. In a bark beetle this is often in the shape of a blunt elliptical cylinder with a flattish top where it joins the prothorax. The beetle holds this between its front legs, the meso-thoracic end upwards, and proceeds to first pull off the elytra which are rejected: the under wings being consequently re- leased open out to their full extent but remain attached tothe trunk. The clerid then entirely cleans out this bottle-shaped cylinder, as neatly as one could clean out a jar with a spoon. When quite empty, it is thrown away and the insect starts off in search of another bark-beetle. A mangled prothoracic shell and the empty chitinous body cylinder with the outspread lower wings attached to it are all that are left ofa S. major beetle six minutes from the moment it was captured alive. I have seen three such eaten consecutively, and of 20 beetles put in with four clerids only the above mentioned portions remained when the box was inspected 35 hours afterwards. As has been already mentioned the resemblance between this insect and the tiger in its methods of rushing upon, seizing, and commencing to feed upon its prey is remarkable, the difference being that the insect is more cruel than the mammal since it © makes no pretence of killing the bark-beetle, but commences on it whilst. it is alive and kicking, often bringing forward its middle pair of legs to assist in holding its struggling prey. As an instance of its tenacity and rapacity I may quote the following. In common with most insects the clerid dislikes being upon its back and when so placed makes violent efforts to right itself. A beetle had been placed in a tube with two Platypus (Platypodee) beetles. It atonce seized one and, though shaken violently about, clung to its victim and, falling on its back and finding it impossible to right itself at once, gave up the attempt and consumed its prey in this position, before restarting its struggles to resume the normal position. It then made an effort to seize the second Diapus but was removed as the writer wished to preserve the latter. The insect is polygamous. A o& kept ina box with three? and fed with bark borers for four days, paired with one or other of the three whenever it was not ~1903. E. P. Stebbinge—Discovery of Thanasimus sp. prow. nigricollis. 109 feeding or searching for its prey. In pairing the & rushes atthe ? from behind with the same impetuosity with which it pounces upon its prey, mounts on her back and thrusts the tip of his very flexible abdomen down- wards, curling it round till it reaches the tip of the abdomen of the ?. The latter is at times larger than the & though it may be of the same size. She walks about carrying the male whilst pairing lasts. I have not yet ascertained how long the beetles spend in the adult stage of their life-history. It is evidently several days and may extend to a week or two. We have seen that larvee of all sizes (and consequently probably ages) are to be found in the scolytid larval tunnels during the spring and summer months (they have been so found in May, June, July, August, and September) and therefore with the long life of the beetle it is probable that the generations overlap, this meaning a con- tinuous supply of larvee and beetles throughout the spring, summer, and autumn. It will be shown later on how excessively important this fact is. To sum up my observations on the habits of the &, I may say that when not eating or searching for bark-beetles it is pairing or vice versé and the ?, at any rate up to the time she commences egg-laying, appears to be an equally large and voracious feeder. Since the insect is fully twice as largeas its European confrére, being from 8 to 10 millim. and more in length, whilst the bark-beetles are much of the same size as the Huropean ones, from 2°5 to 5°5 millim., it is naturally capable of consuming in its lifetime afar larger number of beetles and it will therefore be readily understood that the beetle is a valuable ally to have in forests where bark-boring insects may assume the form of serious pests in seasons favourable to themselves. Food. With the exception of one specimen taken on the wing in the middle of June, which was probably feeding upon Diapus wmpressus Jans., the insect may be said to have been first discovered feeding upon Scolytus major and minor in Deodar on the 24th June. From the study of the life-histories! of; these latter beetles, which I have been able to make, itis certain that they are to be found in the adult state from the end of April (the beginning of spring when insect life com- mences to re-awake inthe N.-W. Himalayas after its winter hibernation) to the end of June, or perhaps as late as the end of the first week in July. The beetles from the eggs laid at the end of April and beginning of May, begin to appear on the wing at the end of July or early in August and are to be found throughout that month and on into September. It is thus evident that with but a short interval of three weeks or so this form of food-supply is available for the clerid from its resumption of ! Vide Steb, Depart. Notes on Ins, aff, For., No. 1, p. 45, Id., No, 2, pp. 203-212. “Wie els 5 . 110 E. P. Stebbing— Discovery of Thanasimus sp. prow. nigricollis. [ No. 3, activity in the spring until the autumn. That the insect has an adequate food-supply will be evident from the following facts:— From calculations made from measurements and countings taken in the forest I estimated that in a deodar tree of a hundred feet length of bole and three feet diameter at base which had been felled at the end of April and in which the scolytids had deposited their eggs in the bast layer from top to base, a first generation of some 56,300 adults was produced in July-August. Taking but 50 per cent. of the eggs (8. major lays about 60 and S. minor 40-per brood) laid (these being those of the second generation of the year) by these 56,300 beetles as arriving at matu- rity, we have the enormous total of 1,550,000 beetles at the end of the year, the result of the eggs laid in but one tree in the spring. I may say that in this calculation large deductions have been made to allow for over- estimation, &c., the large number of beetles which oviposited in the giant crown of the tree and their resultant offspring being left out of account altogether. Experiment has shown, however, that the Thanasimus is by no means dependent upon the Scolytus beetles for its food-supply as it will devour with almost, if not quite, equal avidity, various other scolytid pests found in the region of its known activity. I have fed it with the following beetles :— | 1. Bark-boring species (t.e., those species which confine their at- tacks to the bast layer of the trees attacked ). Scolytus major Steb. MS. S. minor Steb. MS. Polygraphus major Steb. MS. P. minor Steb. MS. Pityogenes conifers: Steb. MS, 1 ( } mentioned above (Deodar). ‘ (Blue pine and Spruce). Blue pine, Deodar and Pinus Gerardiana). Tomicus sp. (Blue pine and Spruce). 2. Wood-boring species (i.e., those species which bore right into the wood of the tree and oviposit in it). Rhyncholus sp. (Blue pine, Spruce, and perhaps Deodar ) Hylastes sp. (Blue pine and Spruce). | Diapus impressus Jans. (Quercus incana). Platypus? sp. (Deodar). All the above are coniferous insects, with the exception of the Dia- pus impressus which bores into the wood of the oak Quercus incana. This Thanasimus would therefore appear to be fairly omnivorous where bark-beetles are concerned, attacking freely many different species and in this resembling its European confrére T. formicarius. I think the above short note onits habits will support and confirm the opinion held by the writer, as to the great value and importance of the presence of such an insect in the N.-W. Himalayan Coniferous Forests. ~~~ Fa ee Ne) 6 et I Prats I. a. Young half-grown larve, dorsal and side view. b. Full-grown larva, just before final moult, showing the rolled-up alar appendages beneath the last larval skin. The larva is thicker and shorter when full-grown. c. Winged adult. d. Spruce branch bearing four pseudo-cones. e. A gall or pseudo-cone in transverse section showing the partition into chambers. f. The same magnified showing larvee in situ within the chambers. [Note.—Plate I accompanies the paper on the “ Alar appendages of Chermes abietis-picee in the N.-W. Himalayas,” published in No. 2 of the Journal, Pt. II, 1903. | =_ =? 7 < Plate I. a ‘ Asiatic Society Bengal Journal Part 1.1903. | ATG) hae De ane uet tt $.B.Mondul, del. in Photogravure, Survey of India Offices ,Caleutta,June 1903. CHE RMES ABIETIS-PIOFAE, STEED. MUS- Journal As. Soo. Beng. Vol.LXXIL. Pt.Il 0903) PLATE IL. G.C.Chuckraburtty del. S.C. Mondul Lith. PLATS II. i Journal aE Co. Chuckraburtty del. S.0.Mondul Lith. NA PLATE, AC.Chowdhary, Lith. oO CQ o) ’ + Journ: As. Soc. Beng. Vol. LAXII. Pt. fi 1903) PL AL ONE, AC.Chowdhary, Lith. JOURNAL OF THE ASIATIC SOCIETY OF BENGAL, —<=cfjoe— Vol. LXXII. Part Il.—NATURAL SCIENCE. No. 4.—1908. Materials for a Flora of the Malayan Peninsula.—By Sir Georee Kine, K.C.LE., LL.D., F.R.S., late Superintendent of the Royal Botanic Garden, Calcutta, and J. Sykes Gamsue, C.I.H., F.R.S., late of the Indian Forest Department. No. 14. The present contribution contains an account by Mr. Gamble of the few species belonging to the Natural Order Caprifoliacese, which have so far been collected in the Malay Peninsula and adjacent Islands. But the larger part of it is occupied by a joint account by the authors of the species of the Order Rubiacex, which are characterised by having more ovules than one in each cell of the ovary. The key which precedes the text is only for these genera. In a paper which the authors hope soon to submit to the Society they will deal with the species of the genera which have only a single ovule in each ovarian cell; and that paper will, in like manner, be preceded by a key to these uniovular genera. With the exception of the important family of Leguminose, which was elaborated entirely by Major D. Prain, of the Botanic Garden, Calcutta, and of one genus of Melastomaces, which was done in conjunc- tion with Dr. O. Stapf, chief assistant in the Kew Herbarium, the whole of the orders dealt with in the preceding thirteen parts of these Materials have been worked out by Sir George King. With the view of expedit- J. u. 17 112 King & Gamble— Flora of the Malayan Peninsula. [No. 4, ing the completion of the series, and in consideration of the liberality of the Government of the Straits Settlements which has made feasible a more rapid rate of publication, it has been arranged that Mr. J. 8. Gamble will henceforth, in the majority of the orders belonging to Corollifloree and Incompletx, work in collaboration with Sir George King ; while certain orders will be worked out independently by botanical friends, who have kindly promised their aid. Order LVIII. CAPRIFOLIACEA,. Small trees or shrubs, erect or climbing, rarely herbs. Leaves op- posite, rarely alternate, simple, lobed or imparipinnate; stipules usually absent. Inflorescence various, usually cymose ; flowers hermaphrodite, re- gular or irregular. Calyx adnate to the ovary ; lobes 5, superior, usually imbricate, rarely valvate. Corolla superior, gamopetalous, tubular, funnel-shapel or rotate; limb 5-fid, lobes imbricate. Stamens 5, rarely 4, inserted on the corolla-tube, alternate with the lobes; filaments filiform or subulate ; anthers 2-celled, introrse, longitudinally dehiscing.. Ovary _ inferior, 2-6-, rarely 1-celled ; style terminal, stigma capitate, undivided or bifid, sometimes short and 3-lobed; ovules sometimes solitary, pendu- lous, sometimes many, biseriate, anatropous. Fruit a berry or drupe or sometimes dry and indehiscent, many-celled, l- to many-seeded. Seeds single or many in each cell; testa crustaceous or hard; albumen fleshy, copious; embryo usually minute, ovoid or clavate, 2-fid, radicle smooth, cotyledons ovate.—Distrip. Genera 13, species 200 to 220; chiefly found in the Northern Hemisphere more especially in temperate regions; a few in Australia and South America; none in tropical or Southern Africa. VisurNuM, Linn. Shrubs or small trees. Leaves opposite, rarely alternately verticillate, simple, petiolate; entire, serrate or dentate, sometimes palmately lobed ; sometimes stellately pubescent, sometimes gland-dotted ; stipules usually inconspicuous or absent, in a few cases very large. Flowers herma- phrodite, in terminal or subterminal subumbellate corymbs, the branches cymose or panicled; bracts few, small; bracteoles 1 to 2, usually very small, generally quickly deciduous. Calyx-tube turbinate, cylindric or clavate; limb short, 5-toothed, persistent. Corolla white, pink or yellowish; rotate, campanulate or tubular; lobes 5, equal, imbricate. Stamens 5, inserted on the corolla, alternate with the lobes; anthers oblong, usually exserted; filaments linear or subulate. Ovary 1-3- celled; style short, conical, stigma small, obscurely 3-lobed; ovules solitary in the cells, pendulous. F'rwt a drupe |- or rarely 2-3-celled, l-seeded ; endocarp tough, papery or crustaceous. Seed oblong, com; 1903. ] King & Gamble—Flora of the Malayan Peninsula. 113 pressed, grooved, the edges sometimes incurved; testa membranaceous ; albumen fleshy, sometimes ruminate; embryo minute, cotyledons thin.— Distris. Species over 80, chiefly of the temperate and sub-temperate regions of the Northern Hemisphere in Europe and Asia; a few in the West Indies, South America and Madagascar. Leaves entire :~- Corolla rotate; filaments long, linear; calyx-tube pubescent aa . LL. V. sambucinum. Corotla tubular; filaments ‘abort Paiainte: palvies tube glabrous ... ww. 2 V. Beccarit. Leaves dentate or serrate; calyx- ae Buprons . 3 V. lutescens. 1. VisuRNUM sAmBUcINUM, Reinw.; Blume Bijdr. 656. A large shrub or small tree up to 30 feet high; young branches stout, smooth, somewhat angled; youngest parts and branches of the inflorescence brown, stellate-pubescent. Leaves opposite, entire, thinly coriaceous, elliptic-oblong or -lanceolate, abruptly acuminate, the base cuneate ; both surfaces glabrous except for a few hairs on the midrib beneath and occa- sional tufts in the axils of the main-nerves ; main-nerves 4-6 pairs, promi- nent, curved upwards, joined by prominent arches near the margin; lesser nerves reticulate; length 5 to LO in., breadth 1°5 to 4 in., petiole °75 to 1:25 in., pilose especially on the inner surface. Corymb terminal, usually peduncled but sometimes nearly sessile, umbellate, primary branches 6 to 8 and ‘5 to 1 in. long, upper cymosely branched, short in flower, longer in fruit ; bracts of primary branches very early deciduous, linear-spathulate, ‘2 to ‘3 in. long, bracteoles also very deciduous, very _ short, linear-oblong, densely brown stellate-pubescent. Calyx-tube cylindric, ‘05 in. long, pubescent; lobes 5 spreading, lanceolate-acute. Corolla hemispheric in bud, rotate when open; lobes 5, rounded, imbricate, yellow-white. Stamens 5; anthers oblong, exserted; filaments longer than the petals, much folded in bud. Ovary 1-celled, style conical. Fruit a drupe, broadly ovate, suddenly acute, compressed, wrinkled, 2-grooved on one and 3-grooved on tlie other face, °35 in. long, ‘2 in. broad, endocarp thick, osseous. DOC. Prodr. IV. 325; Mig. FI. Ind. Bat. II. (1856) 120; Oersted in Vidensk. Meddel. (1860) 299, t. 7, jigs. 11-13; C. B. Clarke in Hook. fil. Fl. Br. Ind. III. 5; Koord. & Val. Boomsoort. Java in Mededeel. ’sLands Plant, XX XIII. (1900) 40. V. integerrimum, Wall. Cat. 457; DC. Prodr. IV. 324; Hook. fl. and Th. in Journ. Linn. Soc. Il. 476. Premna (?), Wall. Cat. 9077. Perak: Wray 1237, 1488, 2951; Scortechini 514, Prnane: Wall. 457; Walker 92, 272; Maingay (K.D.) 712/2; King’s Collector 1586, 2273, 5202; Curtis 278. Matacca: Grifith 3395. Singapore: Ridley 6335. Distris. Sumatra; Java; Borneo. 114 King & Gamble—Flora of the Malayan Peninsula. [No. 4, The Perak specimens show two forms, the one (No. 1483 Wray) with leaves elliptic-oblong, glabrous beneath; the other (No. 2951 Wray) with smaller leaves elliptic-lanceolate, with occasional stellate hairs beneath. Other specimens from various localities show intermediate forms so that they are not constant varieties. 2. Visurnum Beccary, Gamble n. sp. Apparently a small tree, young branches rather thick, smooth. Leaves opposite, entire, coriace- ous, ovate, obtuse or very shortly and bluntly acute, base cuneate ; glabrous above, minutely glandular-dotted beneath ; main-nerves 4 to 6 pairs, smaller nerves reticulate; length 3 to 5 in., breadth 2 to 3 in, petiole ‘75 to 1:25 in. Corymb terminal, long-peduncled (1°5 to 38 in.), umbellate, main branches 6,to 8, upper branches cymose, all brown stellate-pubescent when young; bracts and bracteoles small, linear, very numerous, rusty stellate-pubescent, very quickly deciduous. Calyx-tube clavate, glabrous, ‘1 in. long; teeth very minute. Corolla tubular, ovoid in bud, °15 in. long; teeth 5, acute. Stamens 5; anthers oblong, pendu- lous from the summit of a subulate thickened filament, ‘075 in. long. Ovary l-celled ; style short, conical. Fruct (young only) a drupe, 1- celled, faintly 1-grooved on one face, 2-grooved on the other. Perak: Scortechint 375b. Distrin. Sumatra (Beccart No. 194 on Mt. Singalan in Herb. Kew). Specimens of the fully opened corolla or of the mature fruit are not yet avail- able, 3. VIBURNUM LUTESCENS, Blume Bijdr. 655 (1825). A small tree, young branches slender, smooth, youngest parts and branches of the inflorescence brown, stellately-pubescent. Leaves opposite, ovate-acu- minate, thinly coriaceous, cuneate at base, upper two-thirds deeply crenate-dentate, sometimes serrate, teeth mucronate, lower one-third entire; both surfaces glabrous; main-nerves 6 to 8 pairs, ascending, prominent, lesser nerves reticulate; length 3 to 5 in., breadth 1°5 to 2:5 in., petiole ‘5 to ‘75, rough when dry. Oorymb terminal, long- peduncled (1: 5 to 2°5 in.), umbellate, primary branches 3 to 6 and °5 to ‘75 in. long, paniculate-cymosely branched above; bracts of primary branches deciduous, linear-spathulate, ‘4 to °5 in. long, bracteoles very minute, ovate-acuminate, both stellately brown-pubescent.~ Calyx-tube angular, glabrous, ‘05 in. long; lobes 5, erect, ovate, bluntly acute. Corolla hemispheric in bud, rotate-campanulate when open; lobes 5, rounded, imbricate, white. Stamens 5; anthers oblong, exserted ; fila- ments short, equal to the petals. Ovary 1-celled ; style short, conical, faintly 3-lobed. Fruit a drupe, oblong-ellipsoid, abruptly apiculate, compressed, l-grooved on one and 2-grooved on the other face, “3 to “4 in. long, ‘2 in. broad; endocarp thick, hard. DC. Prodr. IV, 329, V. monogynun, Blume Bijdr. 655 ; DC. Prodr. IV. By Baan sundatcum, 1903.] King & Gamble—Flora of the Malayan Peninsula. 115 Mig. Fl. Ind. Bat. II. (1856) 121; Koord. & Val. Boomsoort. Java in Mededeel. ’slands Plant. XX XIII. (1900) 4:3. | Perak: Wray 1496, at 4900 feet on Ulu Batang Padang. Distr. Sumatra; Java. Nat. Ord. Lix. RUBIACEA. Trees, shrubs or herbs, erect, climbing, twining or prostrate, un- armed or spinous. Leaves simple, opposite, usually quite entire; stipules inter- or intra-petiolar, free or united to each other or to the petiole; in the tribe Galzex leaf-like and forming a whorl with the leaves. Inflorescence various. Flowers usually hermaphrodite, mostly regular and symmetrical. Calyz-tube adnate to the ovary: its limb various, sometimes petaloid. Corolla gamopetalous, regular, usually 4-5-lobed, rarely bilabiate; the Jobes of the limb valvate, imbricate or contorted. Stamens equal in number to the lobes of the corolla, sessile or on short or long filaments; anthers 2-celled, usually linear, dorsifixed, and dehiscing longitudinally, rarely with porous dehiscence. Disk epigynous, usually annular- or cushion-shaped, sometimes lobed, or reduced to glands. Ovary inferior, 1-10-celled; style simple or cleft (but rarely cleft to the base); stigmas various, usually on the style- arms, but sometimes connate and fusiform, oblong, capitate or mitriform and simple or lobed. Ovules in the ovarian cells solitary or in pairs, or numerous. fruit capsular, baccate, drupe-like, 2-10-celled, or dehiscing into 2 or more dehiscent or indehiscent cocci. Seeds various, with horny albumen; embryo straight or curved; cotyledons flat or semi-terete ; radicle superior or inferior.—Distr1B. About 4,800 species, chiefly tropical and sub-tropical. Ovules numerous in each cell of the ovary :— Fruit dry, capsular or separating into 2 or 4 cocci:— Flowers collected into dense globular heads: corolla funnel-shaped, its lobes valvate or imbricate in bud : stigma simple :— Lobes of the corolla valvate ae sus de AUITRAGYNE. Lobes of the corolla imbricate :— Tubes of the calyces concrete oe .. 2. SARCOCEPHALUS, Tubes of the calyces free :— 3 Seeds not winged see Sc .. & ANTHOCEPHALUS, Seeds winged :— Trees :— Capitules solitary or few ove we 4 NAUCLEA. Capitules numerous, small... ; ‘ae Os CADENA, Climbers :— Capitules usually solitary, axillary, on peduncles curving into hooks when in ERUIG™ 4 ves ore ate ae - Os WU NCAREA: 116 King & Gamble—Flora of the Malayan Peninsula. [No. 4 Flowers in corymbs or panicles, not in globular heads ; corolla-lobes valvate, imbricate or contorted in bud. Fruit capsular, 2-celled, seeds winged :— Corolla funnel-shaped, its lobes twisted in bud; flowers in terminal pendulous panicles; lobes of calyx equal, not petaloid: stigma simple fusiform... 7. Corolla with a short tube, its lobes slightly twisted in bud; flowers stalked, in erect corymbs or panicles; one of the lobes of the calyx sometimes large, petaloid and persistent; stigma fleshy, 2-lobed ... 8. Flowers in subscorpioid cymes: corolla funnel-shaped, its lobes valvate, but somewhat twisted in bud; capsule 2-celled; seeds numerous, obscurely winged ; CoPpTOSAPELTA. MUSSAENDOPSIS. ‘ stigmas 2 linear, revolute ase ee wo. 9. GREENIA. Corolla and inflorescence various, corolla-lobes valvate in bud. Stamens 4 or 5. Fruit a loculi- or septi- cidal capsule with 2 or 4 cells, or consisting of 2 or 4 adnate dry dehiscent or indehiscent (rarely quite in- dehiscent) cocci; seeds small or minute, rarely winged. Herbs or small shrubs (never trees) with entire leaves :— Fruit 2-celled, usually indehiscent: stipules entire :— Corolla funnel-shaped, 4- or 5-toothed; anthers included, dehiscing longitudinally ... eon LO. Corolla rotate ; anthers large, exserted, connivent, dehiscing by apical pores eee ile. OS Fruit oblong, sub-globose, or orbicular, 2- rarely i celled, usually dehiscent, many-seeded, rarely 1- seeded: stipules often divided into bristles :— Corolla funnel-shaped or campanulate, 4-lobed ; capsule loculi- or septicidal, rarely indehiscent ; calyx-teeth contiguous; seeds usually angular .., 12. Corolla rotate, funnel- or salver-shaped, 4- rarely 5-lobed; capsule loculicidal above the remote calyx-teeth, rarely indehiscent; seeds’ minute, angular tee soe eee mae tee Fruit broadly and didymously obcordate, compress- ed, composed of 2 spreading lobes, loculicidal above the calyx; flowers secund on the branches of dichotomous cymes oes on ovo) ts Fruit fleshy, dehiscing irregularly or at the apex, or drupe-like and separating into 2 or more many-seeded cocci :— Flowers in capitula :— Capitula without involucres: calyx entire: sta- mens 4 an ee = see Capitula involucrate; calyx obliquely Der sealets obtusely 2-4-lobed or 2-lipped: stamens 5; climb- ing shrubs ees eee ase oa, AO, DENTELLA. ARGOSTEMMA, HEDYOTIS. OLDENLANDIA. OPHIORRHIZA. LUCINAEA. LECANANTHUS, 1903.) Capitula bracteate, crowded; calyx with 5 ciliate lobes; corolla 5-lobed; stamens 5; arms of style 2, truncate ; berry with thin pericarp; herbaceous 17, Flowers in terminal corymbs or racemes: one of the calyx-lobes occasionally long, petaloid, persistent ; erect or scandent shrubs ois for suey Ge Flowers in panicled terminal umbels; calyx-limb cupular, deciduous; corolla 5-lobed ; stamens 5; arms of style linear-lanceolate ; woody scandent shrubs ... 19. Flowers in axillary cymes; shrubs or small trees :— Flowers polygamous; cymes panicled; lobes of | calyx and corolla and the stamens 8 to 16; disc large, convex, with as many lobes as the stamens and stigma aise or wae 20s Flowers hermaphrodite :— Cymes short, few-flowered; calyx minutely toothed ; frait with scanty pulp geile Cymes loose; flowers 4-5-merous; lobes of corolla reduplicate-valvate ; fruit baccate, fleshy, 2-5 celled aa eee wae 2aiota Corolla-lobes twisted in bud: fruit baccate, fleshy or _ dry ; seeds usually large, cotyledons often foliaceous :— Seeds numerous in each cell of the fruit :— Flowers dioecious :— Cymes from the axils of fallen or undeveloped leaves; style arms 2; berries with thin pericarp, ellipsoid or globular se tse ove 23. Flowers hermaphrodite :— ‘Flowers in cymes :— Cymes terminal, corymbose; flowers 5-merous ; stigma simple, fusiform; fruit pisiform, 2- celled ae cos os . 24, Cymes usually axillary; stigma fusiform or bifid ; fruit baccate with thick pericarp :— Calyx-limb various; fruit 2-celled lel Os Calyx-limb usually tubular; fruit 1-celled ... 26. Flowers in spikes :— Calyx-limb minutely 5-toothed: anthers thick- ened at the apex sain is Ovules and seeds 2 or 8 in each cell :— Flowers in axillary fascicles on small cymes; calyx- limb truncate or 4-5-toothed; fruit baccate, ovoid or globose, sessile... a ae vce 20. Ovules never more than 2 in each cell of the two-celled ovary :— Corolla-lobes twisted; ovules inserted together half- way up the ovarian cell, one pendulous, the other erect ; flowers in dense axillary pedunculate cymes: a small littoral tree se oeeoe King & Gamble—Flora of the Malayan Peninsula. 117 CoproPHYLLUM. MUSSAENDA. TRISCIADTA,. 7 AULACOODISCUS. UROPHYLLUM. ADENOSACME. BRACHYTOME. STYLOCORYNA, RANDIA. GARDENIA. PETUNGA, DIPLOSPORA, SCYPHIHORA, 118 King & Gamble—Flora of the Malayan Peninsula. [No. 4, Corolla-lobes valvate; ovules erect, on the top of an erect basilar placenta; flowers in scorpoid cymes, collected in corymbose panicles ae oo. 30, JACKIA. 1. Muirracyna, Korthals. Trees. with petiolate leaves and large caducous bracts and stipules. Flowers sessile, crowded in globose, solitary or paniculate, pedunculate capitules, each peduncle with 2 foliacious long-petioled bracts near its apex: the flowers mixed in the capitules with numerous, spathulate paleaceous bracteoles. Calyces conoid, densely crowded, but quite separ- able from each other: the calyx-tube short, its mouth truncate or 5- toothed. Corolla funnel-shaped; the tube long, the mouth with a ring of villose hairs inside below the base of the lobes; lobes 5, thickened towards the apex, lanceolate, valvate in astivation. Stamens 5, origina- ting just above the ring of hairs; anthers lanceolate, apiculate, cordate or sagittate at the base; filaments short. Ovary 2-celled; style filiform, exserted; stigma cylindric or mitriform, its base overlapping the apex of the style; ovules numerous, on pendulous placentas. Fruit of two 5-ridged cocci dehiscing at the apex. Seeds numerous, small; the testa with thin wings, the albumen fleshy.—Distriz. Hight species, 5 of which are Indo-Malayan and 3 tropical African. Main-nerves of leaves 7 to 9 pairs; corolla °2 in. long; calyx-tube narrow, not ridged ... we 1. M. diversifolia. Main-nerves of leaves 12 to 15 pairs; cardia 3 in. long; calyx-tube wide, ridged ... aie .. 2, MM. speciosa. 1. MrrRaAGYNA DIVERSIFOLIA, Haviland in Journ. Linn. Soc. XX XIII. 71. Young branches pale, compressed. Leaves thickly membranous, ovate or elliptic, to rotund-ovate ; obtuse or sub-acute ; the base rounded (in the lower leaves slightly cordate); both surfaces glabrous, the lower minutely reticulate, sometimes puberulous especially on the nerves; main-nerves 7 to 9 pairs, rather straight, spreading; length 4 to 8 in.; breadth 2 to 6 in.; petiole *35 to 1°25 in. ; stzpules oblong, blunt. Corolla -2 in, long; tube of calyx not ridged, about ‘025 in. wide. Anthers cor- date at the base. Stigma cylindric, overlapping the apex of the style by its hollow base. Mitragyne javanica, Koord. & Valet. Bijdr. 8, 38. Stephegyne diversifolia, Hook. fil. Fl. Br. Ind. III. 26. S. parvifolia, Korth. Verh. Nat. Gesch., p. 161 (in part). Nauclea diversifolia, Wall. Cat. 6096: G. Don-Gen. Syst. III. 467. N. rotundifolia, Roxb. FI. Ind. I. 516; Kurz For. Fl. Burm. IJ. 67. N. Brunonis, Wall. Cat. 6097: G. Don, lc. N. parvifolia, Roxb. var. 2, Kurz For. Fl. Burm. II. 67. Anpaman Istanps.—Distris, Burma; Chittagong; Philippines, 1903. | King & Gamble — Flora of the Malayan Peninsula. 119 The occurrence of this in a wild state in the Malay Peninsula is doubtful. In the Andaman islands it is common. The stigma of this is externally almost cylindrical. But it is hollowed at the base like a wine-bottle and covers the apex of the style like a cap. The leaves of the upper part of the branches are smaller and more or Jess ovoid in form; those of the lower parts are larger and more rotund, hence the specific name. Roxburgh, thinking only of the lower leaves, named the species Nauwclea rotundifolia. 2. MirraGyna speciosa, Korth. Obs. de Naucleés Indicés, p. 19 (name only). Young branches usually dark-coloured, compressed. Teaves membranous, oblong-obovate to oblong, shortly and abruptly acuminate or sub-acute, the base broad and rounded or rarely slightly and suddenly contracted; both surfaces glabrous, the lower minutely reticu- late and sometimes puberulous on the 12 to 15 pairs of slightly curved ascending nerves; length 4 to 5°5 in.; breadth 2 to 3'5 in. ; petiole thin, ‘8 to 1:2 in. long; stipules lanceolate, sparsely pubescent. Corolla °3 in. long; tube of calyx wide, ridged, its mouth about ‘075 in. across. Anthers sagittate at the base. Stigma mitriform. Haviland in Journ. Linn. Soc. XXXIII. 69. Stephegyne speciosa, Korth. Verh. Nat. Gesch. Bot., p. 160. SS. parvifolia, K. Schum. FI. Kaiser-Wilh, Land., p. 127. “Nauclea speciosa, Miq. FI. Ind. Bat. II. 140. Pawanc: Ridley 2190. Perak: Wray 1896, 4280; Perrax: Scortechint 616; King’s Collector 1770, 10021, 10459.—Drsrrin. Sumatra, Forbes, Borneo ; Motley 1169; Korthals, Philippines ; Cuming ; Motley ; Vidal; New Guinea. 2. SarcocePHatus, Afzel. Shrubs or trees with petiolate leaves and small or large caducous or persistent stipules. Flowers sessile, conjoined by their confluent calyx- tubes into globose, axillary or terminal, pedunculate, ebracteolate heads, the peduncles with 2 small bracts near or below the middle. Calyzx-tube short; its mouth with 4 or 5 imbricate, persistent or caducous teeth. Corolla infundibuliform; its mouth with 4 or 5 broad, blunt, imbricate teeth not thickened near the apex. Stamens 4 or 5, inserted in the glab- rous throat of the corolla by very short filaments, or sessile; anthers broadly ovate. Stigma clavate, fusiform or capitate, exserted, the style long, filiform. Ovary 2-celled ; ovules numerous, on two pendulous pla- centas. Fruits combined into a globose fleshy mass of 2-celled pyrenes, with thin septa. Seeds ovoid, compressed, not winged ; testa crustaceous ; albumen fleshy.—Distris. About a dozen species, mostly Indo-Malayan ; one Australian and one African. Leaves pubescent beneath: capitules about °8 in, in diam. “i re sae ek ae me 1 fs | S. hirsutus, 120 King & Gamble— Flora of the Malayan Peninsula. [No. 4, ‘Leaves minutely scaly beneath, more or less obovate; capitules 1°56 in. in diam. ... Leaves quite glabrous :—., Leaves oblong-lanceolate to elliptic-oblong ; capi- meas we 2 8S. Maingayt. tules °5 to ‘75 in. in diam. ... a. .. 3& 8. subditus. Leaves more or less obovate; capitules ‘5 in. in diam, os ia Sia w 4 SS. Junghuhnit. 1. SARCOCEPHALUS HIRSUTUS, Havil. in Journ. Linn. Soc. XXXIII. 32.