ee oa asheare Sr Sena Care Pe: iiss “ peop elegans peste Le reese = i ¢ E: t é FOR THE PEOPLE FOR EDVCATION | FOR SCFENCE LIBRARY OF THE AMERICAN MUSEUM OF NATURAL HISTORY ia SERS wma PIGAD eg pein em VERTEBRATE FAUNA OF THE MALAY PENINSULA FROM THE ISTHMUS OF KRA TO SINGAPORE INCLUDING THE ADJACENT ISLANDS. PUBLISHED UNDER THE AUTHORITY OF THE GOVERNMENT or THE F'rperaTED Maray Srares. EDITED BY H. C. ROBINSON, C.M.Z.S., DIRECTOR OF MUSEUMS, FEDERATED MALAY STATES. REPTILIA and BATRACHIA. BY GEORGE A. BOULENGER, D.Sc., Ph.D., F.R.S. LONDON: TAYLOR AND FRANCIS, RED LION COURT, FLEET STREET. KUALA LUMPUR: SINGAPORE: FEDERATED MALAY STATES an 7. We =] GOVERNMENT PRESS. KELLY & WALSH, LTD. 1912. SOAR ALS A PEER AIEL tf i oy re ; is, aa ets ©) a as = iid ; PRINTED.BY TAYLOR AND FRANCIS, RED LION COURT, FLEET STREET. PREFACE. THE present volume on the Reptiles and Batrachians by Mr. G. A. Boulenger forms the first instalment of a Verte- brate Fauna of the Malay Peninsula, issued by authority of the Federated Malay States Government. Though, to a large extent, the ground traversed is covered by Blanford’s ‘Fauna of British India,’ some eighty per cent. of the Malayan species occurring also in Tenasserim, it is considered that a comprehensive account of the Peninsular fauna in a convenient and readily accessible form, will be of advantage to Zoology in general and to local workers in particular. The plan of the work has been that of the ‘ Fauna of British India,’ to which it may be regarded as supple- mentary, and references to literature, especially in the case of species common to both this and that fauna, have been cut down as much as possible, though a fairly full synonymy has been given for all forms which do not occur outside Malayan limits, which, for present purposes, may be defined as comprising the area from the British Indian border and the Isthmus of Kra, south to Singapore, including all ad- jacent islands within the twenty-fathom line, but excluding a2 iv PREFACE. the Rhio-Lingga archipelago, which politically belongs to Netherlands India and faunistically is allied to Sumatra, rather than to the Malay Peninsula. Of this area, it may be confidently stated that our know- ledge of the southern two-thirds, or that portion under British control, is as complete as that of any similar area in Asia, and that, as regards actual species, very few more remain to be discovered, though, of course, much has still to be accomplished in the department of general bionomics. In the northern third, which includes the Siamese and Malayo-Siamese states usually known as Lower Siam, there is scope for much more work, and it will probably be found that when this district is thoroughly investigated, the range of many Tenasserimese and Siamese species not at present included in our fauna will be extended in this direction. In particular, the mountainous country in Nakawn Sitamarat between latitudes 8° and 9° N. on the east coast of the Peninsula may be expected to yield interesting novelties. The appended table serves to show the rate at which, during the last thirteen years, our knowledge of the fauna of the Malay Peninsula has been increased. As a matter of fact the increase has been even greater than the figures indicate, as certain species formerly included in the local lists have been shown not to exist within the area, and are therefore excluded from the latest account. Flower, Boulenger, Boulenger, 1899. 1903. 1912. REPTILIA. Emyposauria (Crocodiles) .... 3 3 3 Cur tonia (Tortoises & Turtles). 19 23 23 SQUAMATA. Lacertiha (Lizards) ... 2.25% 49 O. 81 Ophidia (Snakes) .......... ach 129 131 PREFACE. Vv Flower, Boulenger, Boulenger, 1899. 1905. 1912. BATRACHIA. Ecaupata (Frogs & Toads).... 40 58 64 Avovs (Cweilians) v.25. 05.2: 2 2 2 42 60 66 The literature on Malayan herpetology is not very extensive, and, excluding systematic works and museum catalogues, all that is of any great importance will be found in the following papers, which are duly referred to in their proper sequence :—} Cantor, Turoporn.—“‘ Catalogue of Reptiles inhabiting the Malayan Peninsula and Islands.” Journal Asiatic Society of Bengal, xvi, pp. 607-656, 897-952, 1026-1078 (1847); reprinted in Miscellaneous Papers relating to Indo-China (1st series), vol. 11, pp. 112-257, London, 1886. Ginrurr, A.—‘The Reptiles of British India.’* Ray Society, London, 1864. Sroriczka, F.—‘‘ Observations on some Indian and Malayan Amphibia and Reptilia.” Jowrn. Asiat. Soc. Bengal, xxxix (ii) pp. 134-228, pls. ix—xii (1870). Ipem.—‘ Notes on some Species of Malayan Amphibia and Reptilia.” Journ. Asiat. Soc. Bengal, xi (ii) pp. 111-126, pl. xi (1873) ; reprinted in Miscellaneous Papers relating to Indo-China (2nd series), vol. i, pp. 72-87, London, 1887. Frower, Sranrey Surry. Notes on a Collection of Reptiles and Batrachians made in the Malay Peninsula in 1895-6; with a List of the Species recorded from that Region.” Proc. Zool. Soc. London, 1896, pp. 856-914, pls. xliv—xlvi. Iprw.—‘‘ Notes on a Second Collection of Reptiles made in the Malay Peninsula and Siam from November 1896 to September 1898 ; with a List of the Species recorded from those Countries.” Proc. Zool. Soc. London, 1899, pp. 600— 696, pls. xxxvi, XXXxvii. Ipem.—‘‘ Notes on a Second Collection of Batrachians made in the Malay Peninsula and Siam from November 1896 to * The Malay Peninsula is also included in the scope of this work. vi PREFACE. September 1898; with a List of the Species recorded from those Countries. Proc. Zool. Soc. London, 1899, pp. 885—- 916, pls. lix, lx. Laiptaw, F. F.—‘On the Frogs collected during the ‘Skeat Expedition’ to the Malay Peninsula, 1899-1900.” Proe. Zool. Soc. London, 1900, pp. 883-890, pl. lvii. Iprm.—*‘ On a Collection of Lizards from the Malay Peninsula made by Members of the ‘Skeat Expedition,’ 1899-1900.” Proc. Zool. Soc. London, 1901 (i) pp. 301-311. Ipem.—‘ List of a Collection of Snakes, Crocodiles, and Chelonians from the Malay Peninsula made by Members of the ‘ Skeat Expedition,’ 1899-1900.” With an Appendix containing a list of the names of the places visited by the ‘ Skeat Expe- dition” By W. W.Sxear. Proc. Zool. Soc. London, 1901 (li) pp. 575-586, pl. xxxv. Bourter, A. L. ‘On Recent Additions to the Batrachian Fauna of the Malay Peninsula.” Proc. Zool. Soc. London, 1902 (ii) pp- 188-190. Boureneer, G. A. “Report on the Batrachians and Reptiles. With an Appendix containing a list of the Batrachians and Reptiles recorded from the Malay Peninsula, south of Tenasserim.” Fusciculi Malayenses, Zoology, vol. i, pp. 1381— 176, pls. v—x (1903). Burier, A. L.—‘* A List of the Batrachians known to inhabit the Malay Peninsula; with some Remarks on their Habits, Distribution, etc. Journal of the Bombay Natural History Society, vol. xv, pp. 193-204, 387-402 (1903-4). Roxginson, H. C.—‘‘ Further Additions to the Batrachian Fauna of the Malay Peninsula, with a list of the species at present known to occur therein.” Journal Federated Malay States Museums, vol. i, pp. 19-24 (1905). Bovutznerr, G. A.—‘‘ Report on the Gunong Tahan Expedition, May to September 1905, III. Report on the Fishes, Batrachians, and Reptiles.” Journ. Fed. Malay States Mus. vol. ii. pp. 61-72, pls. iv, v (1908). The descriptions throughout are based by the author on the unrivalled collections in the British Museum, supple- mented in some few cases by specimens in the Selangor, Perak, and Singapore Museums, from which collections the PREFACE. vil range given for certain of the rarer species is in maay cases derived. | For permission to utilize many of the blocks prepared for the ‘Fauna of British India,’ which has added greatly to the value of the present work, the Government of the Federated Malay States is indebted to the Secretary of State for India; a few illustrations are derived from previous publications of Mr. Boulenger, while the remainder have been specially prepared. Acknowledgments must be made to all those who by the gift of specimens or otherwise have aided in the preparation of this work, amongst whom Dr. J. D. Gimlette and Dr. A. G. H. Smart, of the Kelantan Medical Service, must be specially mentioned, the large and excellently preserved collections of snakes presented by these gentlemen to the British Museum having greatly helped to elucidate the distribution of many of the species. Thanks are also due to Dr. R. Hanitsch, of the Raffles Museum, Singapore, for information regarding the collections under his care. The large collections made by Capt. 8. 8S. Flower, and presented by him to the British Museum, supplemented by his excellent papers, have been of the greatest help to the author in the preparation of this work. In conclusion, it may not be amiss to indicate to those specially interested in the groups with which this volume deals certain problems to which their attention may be profitably directed. Such problems are :— (i.) The occurrence and distribution in the Peninsula of the Marsh Crocodile (Crocodilus palustris) (ped) Vili PREFACE. (ii.) The number of species of soft-shelled Turtle (Trionychide) existing in the Peninsula, and the distribution thereof. Gul.) The range and distribution of the hard-shelled River Tortoises commonly known as tuntong (genera Batagur, Callagur, and Orlitia). (iv.) The species of small nocturnal or burrowing Snakes, such as Lycodon, Ablabes, Simotes, and Calamaria. (v.) The Sea-Snakes generally (Hydrophine). (vi.) The family Amblycephalide. Among the Batrachians information is especially required about the breeding-habits; and series of tadpoles, well preserved and accompanied if possible by the adults, would be valuable additions to the British Museum collection or to those of any of the local institutions. Very little also is known about the range and habits of the two Cecilians (Ichthyophis), which appear to be very rare in the southern half of the Peninsula. HERBERT C. ROBINSON. Federated Malay States Museums, Kuala Lampur. Class REPTILIA Order I. EMYDOSAURIA .. Fam. 1. CrocopiLip™® 1. Tomistoma, S. Mili. Order II. CHELONIA Fam. 1. TRIoNYCHIDa Meiriony x, Geofl... 606.5. 2. Pelochelys, Gray Fam. 2. TESTUDINID® PME StU Os Lo. ch ssecdiminslcrer eve ts 2. Geoemyda, Gray 3. Cyclemys, Bell 4. Bellia, Gray SYSTEMATIC INDEX. 1. schlegelii, S. Mill. .. ; PB Crocodilus, Laur. 3... 2. 1. porosus, Schneid....... 2. palustris, Lesson 1. subplanus, Geoffr. eeurum, Gray’ 5.0... erepaayr, Sheed. s2 ss. + 4, cartilagineus, Bodd..... 1. cantoris, Gray 1. elongata, Blyth........ 2. emys, Schley. § Miill. .. 3. latinuchalis, Vail. .... 1. spinosa, Gray ........ 2. grandis, Gray 1. platynota, Gray ...... 2, annandalii, Blgr....... 3. dhor, Gray 4. amboinensis, Daud..... at aypeneve ie 6, oe 1. erassicollis, Gray...... Oe Be OO CD bo | 6. Damonia Gray. 40. .« 6. Orlitia, Gray 7. Callagur, Gray 8. Batagur, Gray Fam. 3. CHELONID Fam, 4. SPHARGID® Fam. 1. GeCKONIDZ 2. Gonatodes, Fitz. 1. subtrijuga, Schleg. § MO Tok. Rizie BU thas 6 1. borneensis, Gray seein 1. picta, Gray rae es 1. baska, Gray oeoe ee eee 1. Chelone, Brongn. ........ Umass oeraec ee cnraes 2. imbricata, Z. OF Oro Le) und 2. Thalassochelys, F’z. NER Caretta anette selctelere 1. Dermochelys, Blaine. ls ;CORTACRARE:, BAe A Rei Order ILI. SQQUAMATA Suborder LACERTILIA.... 1. Gymnodactylus, Spex 1. marmoratus, /?tz. 2. peguensis, Bigr. 3. pulchellus, Gray 4. consobrinus, LP CLEP Sater 1. kendalli, Gray ........ Da ltinissSCOLmer terre ea 3. ABluroscalabotes, Bigr. De telimissnGic/mvsrtsene ne x SYSTEMATIC INDEX, F Page | Page 4, Peele Gray ...66s 40 , Fam. 3. VARANIDZ.........- 7 Ta trenatus, DGB. sx... ~All Se De brovldi Grave oe... 18 a ee - 3. depressus, Gray ...... 43 a Be, De a “7 4, leschenaultii, D.§ B... 43 Benet ose ee 77 5, flaviviridis, Riipp. .... 44 a? ye 6. parnoti, D&B. ...... 44 4, rudicollis, Gray ...... 78 7. platyurus, Schneid. .... 45 Geeavrator a a ie 5. Mimetozoon, Blgr. ...... 45 1. craspedotus, Mocquard . 46 | Fam. 4. LacerTipm ........ 79 5, Crehyr ay Gray os ais moa aces 46 a 1. mutilata, Wiegm. .... 47 1. Tachydromus, Daud. .... 79 2. butleri, Blgr. ........ 47 1. sexlineatus, Daud. .... 79 3, larutensis, Blgr. ......- 48 7. Lepidodactylus, Fitz. .... 48 | Fam. 5. Scincrpm@ ....ecccee 80 1. ceylonensis, Bigr. .... 49 pie peu 2. lugubris, D. § B. .... 49 | 1. Mabuia, Fitz. .........06. 82 Bi \Grecky Quin. cn caescrs sais 50 1, novemearinata, And. .. 82 1. verticillatus, Zaur..... 50 2. macularia, Blyth ...... 83 2, Stentor Cantursseisiae. s 51 3. rugifera, Stol. .......- 83 3. monarchus, D. § B. .. dL 4, multifasciata, Kuhl... . 84 9. Ptychozoon, Kuhl ........ 52 5. siamensis, Gilt = ae 84 1. bomalocephalum, Crev.. 52 | 2 Lygosoma., Gray ........ 85 2. horstieldii, Gray ...... 53 1. stellatum, Bigr, ...... 87 2. presione, Blgr: sien 88 2 3. scotophilum, Bliyr. .... 88 amin 2: AGIAN aa) ernest el 54 4, sanctum, D:.S B. =... 82 a a 5. maculatum, Blyth .... 8&9 1. eae L Bee en Ea = 6. anomalopus, Blgr. .... 90 . GUS, Le wre ce eer eves e Lyd ; 76 7, € 2. maculatus, GIG sister 58 a ae Te ah Dard a He Bt fea, aoe S » Dutlert, Digr. vseveeee 5 5. fimbriatus, Kuhl ...... 59 O! olivaceunn (Guar 9] 4. punctatus, Blgr. ...... BY) | 10. bat Oasis 99 lod F " é A . su, e cee eee by Fe 6. Sais au : Senile 4 We albopunctatum, Gray .. 93 2 fornnede’ Blan en 61 12. bampfyldii, Fi. Bartlett . be 8, microlepis Bier. 69 13. vittigerum, Blgr. .... le i ; Lis tats es ae i 14. atrocostatum, Zess..... 94 9. melanopogon, Bigr, .. 62 15. singaporense, Stdy 95 Ae quingmensetatne wGray 2) G5 16. quadrivittatum, Peters . 95 eRe Hea amt che os 17. surdum, Bigr. ,-aee 96 2. Aphaniotis, Peters........ 3 es ate i aren Peters 64 18. cophias, Bigr. ......-. 96 Baer ee keener ae sk 5 19: chalcides, J. case 97 3. Gonyocephalus, Kaup .... 65 90. larutense, Blgr 97 4 oe S 2 av. : SLs A a \elJele semen e ' nani eked a oF me 21. miodactylum, Blyr. .. 98 2. Vi, Be cyan Tecra 3. grandis, Grdy ........ 66 4. robinsonii, Blyr. ...... 67 | Fam. 6. DipamMipm@........ we 98 4. Acanthosaura, Gray ...... 68 1. Dibamus, D. § B. 99 | Sarmatas (Guay. sn. 68 j a oui rere 5 emilee Bie. 69 1. novee-guinee, D. & B. . 99 6. ‘Calotes,'Cuuss. sek naknees 69 1. flowpert, Blom ce Sea as. TOY Ne 2. cristatellus, Kukd .... 70 | Suborder OPHIDIA........ 100 3. versi D Si eben cd oC 4. Maa ih se ey a i Fam, 1. TYPHLOPID@ . «. os aun 101 6. Liclepis Cue.” lene 73 1. Typhlops, Schneid......... 102 1, belliana, Gray. in s.2e: 73 ]. lineatus, Bove. cna 102 SYSTEMATIC INDEX. e Page 2. braminus, Daud...... . 103 3, albiceps, Bigr........; 103 4, bothriorhynchus, Gthr. . 104 5. nigroalbus, D. 8 B. .. 104 6. mutilatus, Werner ..,. 105 Pam. 2, BOWA 2.6 cee ees 105 ee VEHON, GUC... wens oes 105 1. reticulatus, Scknetd. .. 107 PPMTNOMUIT US! 225) chee islew «0 108 meePeurtus, Schley. ..0 +6 bo 1C9 Fam. 3, Itystipx abhi OE 109 1. Cylindrophis, Wagl....... 109 il, SRN SLEDS coca oenn oe dahl 2. lineatus, Blanf. ...... 1 a Fam. 4. XENOPELTID® ...... 112 1, Xenopeltis, Reinw. ...... 112 I. unicolor, Reimw........ 113 Fam. 5. COLUBRIDZ ........ 114 Subfam. 1. .derochordine .... 115 1. Acrochordus, Hornst. aS 1, javanicus, Hornst. .... 115 2. Chersydrus, Cuv. ....... 2 NG 1. granulatus, Schneid. .. 116 3. Xenodermus, Reirh....... Wey 1. javanicus, Reimh....... Ae Subfam. 2. Colubrine ........ 1G 4. Polyodontophis, Blgr. .... 120 1. geminatus, Bote ...... 120 2. sagittarius, Cant. .... 121 5, Xenochrophis, Gthr....... 121 1. cerasogaster, Cant. .... 121 6, Tropidonotus, Kuhl ...... 122 1. piscator, Schneid....... 125 2, trianguligerus, Bove.... 125 Dinas, Laidlaw 2.....-%. 125 A, stolatus, YF 125 5. subminiatus, Schleg. 126 6. chrysargus, Schleg. .... 127 7. maculatus, Edeling . 128 its Macropisthodon, JH Pee yon Jets: 1. flaviceps, D. § B. 128 2. rhodomelas, Bove 129 x1 : Page 8. Helicops, Wags. ).2 130 1. schistosus, Daud. 130 9. Lycodon;, Bore a. wees 2. 131 IR eullicne a) Rk SS 131 2. laoensis, GERM. scalisn oc: 132 on CuneDIsy (Convene 132 A. ‘butler, Blom) saves «5. 133 5. subcinctus, Bole ...... 133 10. Dryocalamus, Gthr. ...... 13 1. subannulatus, D. § B. . 134 Eh. ZxOC ys, Cope. ctr wmnree sss 135 LE CATINaA tS Guin e 135 My MONO, (Gaal, soe aaa 136 A2, Zamenis, Wagl. ©. soveeai.s 136 1, korgos, SeRlegencs: baren ’ ae « _ . we ’ a ¢ , ’ vo ' hd) MONE ae, + a a we ’ * + * ave ees o4 ’ i + ai, ao, € RTS 4 ve ad Class REPTILIA. Cold-blooded Vertebrates breathing by lungs throughout their existence, the body covered with scales or scutes. Skull with the parasphenoid small, if distinct, with a basioccipital usually articulating with the vertebral column by a single condyle. Represented in the Malay Subregion by three Orders :— I. EMYDOSAURIA, Crocodiles. Il. CHELONIA, Tortoises and Turtles. III. SQUAMATA, Lizards and Snakes. Order EMYDOSAURIA. Quadrate bone immovably united to cranial arches; two horizontal bony temporal arches. Cervical and dorsal ribs mostly two-headed, the middle dorsals articulating with the transverse processes of the neural arch. Sternum and inter- clavicle present ; no clavicles; abdominal ribs. Pubis excluded from acetabulum. ‘Teeth implanted in sockets. Ventricle of the heart divided by a complete septum. . Pectoral and abdominal cavities separated by a muscular diaphragm. Vent longitudinal ; copulatory organ present, single. A single family. 2 CROCODILID &. Family CROCODILID. Nares anterior; choane opening far back between the pterygoids, which, like the palatines and maxillaries, are produced into osseous plates joining on the median line of the palate; orbit communicating with the infratemporal fossa. Vertebre proccelous; ribs with Fig. 1.—Skull of Crocodilus palustris. A. Side view. B. Upper view. C. Lower view. ang. Angular. m. Maxillary. ptf. Postfrontal, ar. Articular. a. Nasal. g. Quadrate. ~ bo. Basioccipital. p. Parietal. gq)» Quadratojugal. d. Dentary. pl. Palatine. s.ang. Supra-angular. eco. Exoecipital. pm. Premaxillary, so. Supraoccipital. Jf. Frontal. prf. Prefrontal, sg. Squamosal, Jj. Jugal. pt. Pterygoid. tp. 'Transpalatine. 2. Lachrymal. TOMISTOMA. 3 uncinate processes. Manus with five well-developed digits, pes with four. A dorsal armour of bony plates. Ears with moveable opercles. Pupil vertical, Carnivorous, more or less aquatic Reptiles, laying hard-shelled, elongate eggs. Of the six recent genera, two are represented in the Malay Peninsula :— Nasal bones widely separated from the nasal aperture ; splenial bones entering the mandibular symphysis, which extends to the 14th or 15th tooth; snout very narrow and elongate ; — Pees OMEREH RICE IWs4. bs lcgliy ev leer tee es ces TOMISTOMA, p. 3. Nasal bones entering the nasal aperture; splenial bones not entering the mandibular symphysis, which does not extend beyond the 8th tooth; snout broad and tapering ; i teeth on each Ee fareiecritas ons de veal ge wien neem CROCODILUS, p. 4. Genus TOMISTOMA. S. Mull. Arch. f, Nat. 1846, p. 122. 20 or 21 upper and 18 or 19 lower teeth on each side, the laterals received into interdental pits; fifth maxillary tooth largest ; first and fourth mandibular teeth fitting into notches in the upper jaw. Snout very long and narrow; nasal bones not extending to the nasal opening, but in contact with the premaxillaries; nasal opening smaller than the supratemporal fosse ; a small anterior bony plate in the upper eyelid. Man- dibular symphysis very long, extending to the 14th or 15th tooth, comprising the splenial bones. A dorsal shield formed of fou longitudinal series of juxtaposed, keeled, bony scutes. A single species. 1. Tomistoma schlegelii. Crocodilus (Gavialis) schlegelii, 8. Mill. Tijdschr. v. Nat. en Physiol. v, p. 77, pl. iii (1888). Tomistoma schlegelti, Gray, Tr. Z.8. vi, p. 154 (1867) ; Bouleng. Cat. Chelon. &c. p. 276 (1889); id. P.Z.S8. 1896, p. 628; 8. Flower, P.Z.S. 1899, p. 622; Butler, Journ. Fed. Malay States Mus. i, p- 1 (1905). Malay name, Buaya jenjulong. Snout 3 to 31 times as long as broad at the base. Nuchal and dorsal scutes forming a single continuous shield, composed of 22 transverse series, the broadest of which contains 6 scutes, the 4 anterior (nuchals) only two; two small postoccipital scutes. Fingers webbed at the base; outer toes extensively webbed. A strong crest on the outer edge of the leg. Scales on the limbs keeled. Dull olive-green above, finely and closely spotted with B2 A, 4 CROCODILID®. dark brown; tail, and sometimes also back, with dark transverse bands; white beneath ; iris yellowish brown. Total length 43 metres (17 feet). Borneo, Sumatra, Malay Peninsula. The Malay Gharial was first discovered in the Malay Peninsula by Mr. Cecil Wray, on the Perak River, in 1889. A second specimen was caught in the Kinta River, near Batu Gajah, by Capt. H. C. Metcalfe, in 1893 or 1894. Others have since been observed in the States of Perak and Selangor, on the West coast, ~ and of Pahang, on the East coast of the Peninsula. Skulls were observed by Dr. Annandale in a shrine in Patelung, one of the Eastern Siamese Malay States. A specimen from Pulau Tiga, Perak River, sent by Mr. L. Wray to the British Museum, measures 2°64 metres. This is an essentially freshwater animal, and it is said by the natives to often frequent the swamps and marshy lands on the banks of rivers. It feeds principally on fish, and is not known to attack human beings, Genus CROCODILUS. Laurenti, Syn. Rept. p. 53 (1768). 16 to 19 upper and 14 or 15 lower teeth on each side; fourth or fifth maxillary tooth largest ; fourth mandibular tooth usually fitting into a notch in the upper jaw. Snout more or less elon- gate; nasal bones extending to the nasal opening, which is larger than the supratemporal fossee ; a very small anterior bony plate in the upper eyelid. Splenial bones not entering the mandibular symphysis, which does not extend beyond the eighth tooth (usually to the fourth or fifth). A dorsal shield formed of four or more longitudinal series of juxtaposed, keeled, bony scutes. The species of this genus are spreaa over Africa, Southern Asia, the northern parts of Australasia, and Tropical America. Two species are dealt with here :— Snout (the portion of the head in front of the orbits) 12 to 2! times as long as broad, with a more or less strong ridge on each side in front of the eye; postoccipital scutes usually absent ..........+. C. porosus, p. 4. Snout 14 to 1} times as long as broad, without ridges; four small scutes in a transverse series between the occiput and the nuchal secutes,..... C. palustris, p. 5. 2. Crocodilus porosus. Schneid. Hist. Amph. ii, p. 159 (1801) ; Cantor, Journ. Asiat. Soe. Bengal, xvi, p. 622 (1847); Giinth. Rept. Brit. Ind. p. 62 (1864) ; Bouleng. Cat. Chelon. &c. p. 284 (1889); id. Faun. Brit. Ind., Rept. p. 4 (1890) ; 8. Flower, P, Z.S. 1899, p. 623; Annandale, Fascie. Malay., Zool. i, p. 147 (1903). Crocodilus vulgaris, part., Cantor, t. e. p. 621. @ROCODILUS. 5) Malay names. Buaya; buaya tembaga (‘brass-coloured cro- codile ”), alluding to juvenile specimens. . Snout 14 to 23 times as long as broad at the base, with a more or less strong ridge on each side in front of the eye, slightly converging towards its fellow. our large nuchal scutes forming a square, with one or two smaller ones on each side; postoccipital scutes usually absent, sometimes small and irregular. Dorsal shield well separated from the nuchal, the bony scutes forming 16 or 17 transverse and 4 to 8 longitudinal series, these scutes, in a transverse series, separated from each other by the leathery skin. Fingers webbed at the base ; outer toes extensively webbed. A serrated fringe on the outer edge of the leg. Adult dark olive above ; young pale olive, with large black spots on the body and tail, and dots on the head ; yellow beneath. Grows to a length of 30 feet. India, Ceylon, Burma, and Southern China to North Australia and the Solomon and Fiji Islands. Entering salt water and frequently occurring out at sea. Exceedingly numerous in every suitable locality in Malaya. Every year many people lose their lives in the Peninsula by being seized and carried off by Crocodiles. Commonest among the mangroves of the coast, and therefore much rarer on the east side of the Peninsula, where the shores are mainly sandy. Does not extend to the upper reaches of the rivers, where the water is clear and swift, but travels overland for considerable distances to occupy small ponds and lakes or deserted mining holes, where it frequently attains a large size. The largest specimen on record in the Peninsula is one ob- tained in salt water near Matang, Perak, which measured 24 feet 13 inches. A dorsal strip of its skin is now in the Perak Museum, Taiping. A good account of the methods employed by Malays in the capture of this reptile is given by W. T. Hornaday (‘Two Years in the Jungle,’ pp. 305-307: New York, 1897). _, % Crocodilus palustris. Lesson, in Bélang. Voy. Ind. Or., Zool. p. 805 (1834); Giinth. Rept. Brit. Ind. p. 61, pl. viii, fig. A (1864) ; Bouleng. Cat. Chelon. &c. p. 285 (1889); id. Faun. Brit. Ind., Rept. p. 5 (1890) ; 8. Flower, P.Z. 8. 1899, p. 625. Crocodilus vulgaris, part., Cantor, Journ. Asiat. Soc. Bengal, xvi, p. 621 (1847). Malay name, ? Buaya katak =‘ toad crocodile.” Snout 14 to 13 times as long as broad, without ridges. Four large nuchals forming a square, with a smaller one on each side ; two pairs of smaller scutes in a transverse series behind the occiput (postoccipitals). Dorsal shield well separated from the nuchal, the scutes usually in 4, rarely in 6, longitudinal series, these scutes, in a transverse series, suturally united to each other. Fingers webbed at the base, outer toes extensively webbed. A 6 CHELONIA. serrated fringe on the outer edge of the leg. Adult blackish olive above ; young pale olive, dotted and spotted with black. Grows to a length of 15 feet, or more. India, Ceylon, Burma, Malay Peninsula and Archipelago. The Marsh-Crocodile or Mugger appears to be rare in the Malay Peninsula. It is recorded by Cantor, and a specimen stated to be from Singapore is preserved in the British Museum, It is, however, rather doubtful if Cantor’s remarks really refer to this species, and not to C. porosus. No one of the locai Museums possesses specimens. Order CHELONIA. Quadrate bone immovably united to cranial arches. Dorsal ribs single-headed, the anterior attached between two vertebra. Body encased in a bony shell. . i ccs ain pial oie oas-Fa8 rob Masvtza, p. 82. Pterygoid bones in contact in front, the palatal notch not extending to between centres of eyes ; dorsal scales usually smooth in the Malayan SPGCLOS! sic» «ix,sitieps aps Misi ake e mn else ers ia bcecaNeate LyGosoma, p. 85. SCINCIDA, 81 Fig. 23.—Upper and side views of head of Mabuia multifasciata, to explain the nomenclature of the shields. es. Chin-shields. la’. Lower labials. pn. Postnasal. f. Frontal. m. Mental, 7, Rostral. fn. Frontonasal, n. Nasal. sho, Subocular. Jp. Frontoparietal. nm’. Nuchal, se. Supraciliaries. , ip. Interparietal. p. Parietal. sv. Supranasal. l. Loreals. pf. Prefrontal. so. Supraocular. la, Upper labials. 82 SCINCID®. Genus MABUIA, Fitzinger, N, Class, Rept. p. 28 (1826). Palatine bones in contact mesially; palatal notch separating entirely the pterygoids. Movable eyelids; ear distinct, tympanum more or less deeply sunk. Nostril in a single nasal; supranasals, preefrontals, and frontoparietals present. Limbs well developed, pentadactyle; digits subcylindrical or compressed, with transverse lamellze beneath. igAfrica and Madagascar, Southern Asia, Central and South America, and West Indies. Malay name, Bengkarong. Synopsis of the Species, I, Dorsal scales with 5 to 11 strong keels. 32 scales round the body, dorsals with ‘ 9 to 11 keels (8 median strong); 2 or 3 lobules in front of the-ear.............. M, novemcearinata, p. 82. 26 to 30 scales round the body, dorsals with 5 to 7 keels; ear nearly as large as a lateral scale, with or without very indistinct lobules anteriorly ; anterior loreal deeper than second’: . erat hreeect <=: M, macularia, p. 83. 26 scales round the body, dorsals with 5 keels; ear very small, with projecting granules all round; anterior loreal not deeper thanrsecond sop ots oon cle rece M. rugifera, p. 83. II. Dorsal scales without or with 2 or 3 (rarely 5) keels. 30 to 34 (usually 32) scales round the body, dorsals with 3 (rarely 5) keels; ear with 3 to Dshort lobules... ..3% « sa2 oie + ein eye eee M. multifasciata, p. 84. 26 to 380 (usually 28) scales round the body, dorsals smooth or with 2 or 3 keels; ear without lobules.............. M. siamensis, p. 84. 81. Mabuia novemcarinata. Euprepes novemearinatus, Anders, Journ, Asiat. Soc. Bengal, xl, p. 12 (1871). Mabuia novemcarinata, Bouleng. Cat. Liz. iii, p. 179 (1887); S. Flower, P.Z.S8. 1896, p. 873. No postnasal; anterior loreal not deeper than second ; supra- nasals in contact behind the rostral; frontonasal in contact with the frontal; four supraoculars, six supraciliaries; interparietal entirely separating the parietals; 4 labials anterior to the sub- ocular. Har-opening roundish or oval, nearly as large as a lateral scale, with 2 or 3 small lobules anteriorly. 32 scales round the body, dorsals with 9 to 11 keels. The hind limb reaches the wrist of the adpressed fore limb, Olive-brown above, with blackish MABUIA. 83 spots ; a broad blackish lateral band, from the tip of the snout, passing through the eye and above the ear, to the base of the tail; whitish beneath (pale green in life). From snout to vent 98 millim.; tail 110. Originally described from Mandalay, Burma, this species has been rediscovered by Capt. Flower on Penang Hill, at an altitude of 2200 ft. 82. Mabuia macularia. » Euprepes macularius, Blyth, Journ. Asiat. Soc. Bengal, xxii, p. 652 1853). ree brevis, Giinth. P. Z.8. 1875, p. 225. Mabuia macularia, Bouleng. Cat. Liz. ii, p. 182 (1887); id. Faun. Brit. Ind., Rept. p. 190 (1890) ; id. Fascic. Malay., Zool. i, p. 158 1903). Mubuia en Bouleng. Cat. t. c. p. 185, pl. xi, fig. 1 (1887). Postnasal usually absent; anterior loreal deeper and shorter than second; frontonasal in contact with the rostral and usually with the frontal; four supraoculars, five supraciliaries; inter- parietal entirely separating the parietals; 4 (exceptionally 3) labials anterior to the subocular. EHar-opening oval, as large as or a little larger or a little smaller than u lateral scale, with or without a few very indistinct lobules anteriorly. 26 to 30 scales round the body, dorsals with 5 to 7 sharp keels. Scales on tibia mostly bicarinate. The adpressed limbs meet or overlap. Brown or olive-brown above, sides darker and usually with white black- edged spots; back uniform or black-spotted, or with one or two black longitudinal lines; sometimes two light lateral lines on each side, well marked only on the neck ; lower parts yellowish. From snout to vent 65 millim.; tail 85. India, Burma, Indo-China, Siam. Rare in the Malay Peninsula (Biserat, Jalor). 83. Mabuia rugifera. Tiltqua rugifera, Stoliczka, Journ. Asiat. Soc. Bengal, xxxix, p. 170, pl. x, fig. 3 (1870). Mabuia rugifera, Bouleng. Cat. Liz. ili, p. 184 (1887); id. Faun. Brit. Ind., Rept. p. 190 (1890) ; 8S. Flower, P.Z.S. 1899, p. 645; Annandale, Journ. Asiat. Soc. Bengal (2) 1, p. 141 (1905). Postnasal usually absent ; anterior loreal not deeper and much smaller than second; frontonasal largely in contact with the rostral, and nearly always with the frontal; four supraoculars, 6 (rarely 5) supraciliaries ; interparietal entirely separating the parietals ; 4 or 5 labials anterior to the subocular. Ear-opening very small, oval, with projecting granules round its border. 26 seales round the body, dorsals with 5 very strong keels. Scales on tibia bicarinate. The hind limb reaches the elbow of the adpressed fore limb. Dark olive brown above, usually with 5 or 7 G2 84 SCINCID A. continuous or interrupted light longitudinal lines, greenish-white beneath (orange-red in life). From snout to vent 65 millim.; tail 120. Nicobars, Malay Peninsula (Perak, Selangor, Singapore), Sumatra, Borneo, Java. 84. Mabuia multifasciata. Scincus multifasciatus, Kuhl, Beitr. z. Zool. u. vergl. Anat. p. 126 (1820). hae! rufescens, Cantor, Journ. Asiat. Soc. Bengal, xvi, p, 652 (1847) ; Giinth. Rept. Brit. Ind. p. 79 (part.) (1864). Mabuia multifasciata, Bouleng. Cat. Liz. ii, p. 186 (1887); id. Faun. Brit. Ind., Rept. p. 191; 8. Flower, P. Z.S. 1899, p. 646 ; Annandale, Journ. Asiat. Soc. Bengal (2) 1, p. 141 (1905). A postnasal ; anterior loreal not deeper than the second ; supra- nasals frequently in contact behind the rostral, or narrowly separated ; prefrontals forming a median suture; four supra- oculars, five or six supraciliaries ; interparietal entirely separating the parietals ; 4 (rarely 3) labials anterior to the subocular, Ear- opening roundish or oval, as large as or a little smaller than a lateral scale, usually with a few very small lobules anteriorly. 30 to 34 (usually 32) scales round the body, dorsals tricarinate (rarely quinquecarinate). Scales on tibia mostly tricarinate. The hind limb reaches the wrist or the elbow of the adpressed fore limb. Colour very variable. Brown or olive above, uniform or with a dark brown lateral band, or with dark spots, or with a light dorso-lateral band, or with a red lateral band or blotch; sides frequently dark brown with light, black-edged ocelli, Bright sulphur or pale greenish below, throat sometimes whitish or bluish white. From snout to vent 130 millim.; tail 220. Common from Burma and Siam to the Malay Peninsula and Archipelago and New Guinea. Called ‘*Sun Lizard” or ‘“ Grass Lizard” in the Straits Settlements. Capt. Flower observes that numbers are to be seen when the sun comes out after heavy rain, sunning themselves in the grass and on stones and showing off their brilliant metallic colours. By far the commonest Scink in the Peninsula. 85. Mabuia siamensis, Eumeces siamensis, Giinth. Rept. Brit. Ind. p. 91 (1864). Mabuia siamensis, Bouleng. Cat. Liz. 111, p. 188 (1887) ;_S. Flower, P. Z.S. 1899, p. 647; Bouleng. Fascic. Malay., Zool. i, p. 158 (1903); id. Journ. Fed. Mal. St. Mus. iii, p. 67 (1908). A postnasal; anterior loreal not deeper than second ; supra- nasals frequently in contact behind the rostral ; prafrontals often forming a median suture ; four supraoculars, 6 (rarely 5 or 7) supra- ciliaries ; interparietal entirely separating the parietals ; 4 labials LYGOSOMA, 85 anterior to the subocular. EHar-opening roundish or oval, as large as or a little larger than a lateral scale, without projecting lobules. 26 to 30 (usually 28) scales round the body, dorsals smooth or more or less distinctly bi- or tricarinate. The hind limb reaches the elbow of the adpressed fore limb. Bronze-brown above, the back usually immaculate, but sometimes with five more or less distinct narrow longitudinal black lines; a broad dark brown or black band on each side, bordered with pale yellow above; sides below the lateral band pale sulphur or greenish yellow; lower parts emerald green, or yellowish green. From snout to vent 116 millim.; tail 214. Formosa, Hainan, Siam, Malay Peninsula (Jalor and Pahang). M. tytlert (Boulenger, Cat. p. 187; Annandale, Journ. Asiat. Soc. Bengal (2) i, 1905, p. 142), from the Andamans, should perhaps be united with JZ, siamensis. Genus LYGOSOMA. a Palatine bones in contact mesially; pterygoid bones aiso in contact anteriorly, the palatal notch not extending forwards to between the centres of the eyes. Movable eyelids; ear distinct or hidden. Nostril in a single nasal; supranasals present or absent ; prefrontals and frontoparietals present (the latter some- times fused). Limbs well developed, rudimentary, or absent. Represented in every part of the world, Europe excepted. Malay name, Bengkarong. Gray, Zool. Journ. iii, p. 228 (182 Synopsis of the Species. I, Limbs well developed, pentadactyle. A. Ear-opening distinct. 1. Lower eyelid scaly ; no supranasals. a, The limbs overlap when pressed against the body. a, 24 to 28 scales round the body. 24 scales round the body; 22 to 25 lamellee Emer the FOUL TOC 6. ee selene «tse L. stellatum, p. 87. 28 scales round the body; 20 lamellae under Me HOUNUM COC Mr Nar cals dere cc6 ses teleie a vat} L. presigne, p. 88. 8. 80 to 34 scales round the body. 30 or 52 scales round the body ; no nuchals; 25 or 24 lamelle under the fourth toe.... LZ. scotophilum, p. 88. 82 or 34 scales round the body; 3 or 4 pairs of nuchals; 22 or 23 lamelle under the OEE OG a5 coc agatha habeas si) vie) @)aiss'« Shere L. sanctum, p. 89. y. 88 to 42 scales round the body ; 16 to 21 lamellee under the fourth toe. 5 supraoculars ; the hind limb does not reach Bayond theishoulden toicy jie. a siuute s+ LL. maculatun, p. 89. 86. SCINCID 2%. 4 supraoculars ; the hind limb reaches nearly GHG GYO% 2652.<\s}..5 ae thre SAE Gla take ee shed 6. The limbs do not meet when pressed against the body ; 32 scales round the body; 12 to 15 lamelle under the fourth toe. Fourth toe considerably longer than third .. Fourth toe not or but slightly longer than GHIGM : = Neg lies eee mee tat: es. Thachags kom eee 2. Lower eyelid scaly; supranasals present. a. The limbs overlap when pressed against the body; 28 to 80 scales round the body, dorsals with 5 to 9 keels; 17 to 20 lamellee under the fourth toe. . b. The limbs do not meet when pressed against the body. a. 26 to 80 scales round the body; frontal not broader than supraocular region; 12 to 15 lamelle under the fourth toe. The labial below the eye (subocular) much longer than deep, usually about twice as long as the shield preceding it ......... The labial or labials below the eye not longer than deep, not twice as long as the other labiale yet suhe ie. 4 oot oe sh ees ae B. 88 or 40 scales round the body ; frontal broader than supraocular region; 16 la- mell under the fourth toe . 2. Lower eyelid with an undivided transparent disk. a. No supranasal; 28 scales round the body; 25 lamelle under the fourth toe N20. 426 asst b. Supranasals present ; fronto - parietal single; 385 to 38 lamelle under the fourth toe. 36 to 40 scales round the body ............ 34 scales round the body ................ B, Ear covered with scales; no supra- nasal, a. Frontoparietal single; 18 or 20 scales round the body; lower eyelid with an undivided semi- transparent disk. Distance between end of snout and fore limb 13 times in distance between axilla and POM 4 7% pings ave eae Pee Ren eee L. anomalopus, p. 90. L. malayanum, p. 91. L. butleri, p. 91. L, olivaceum, p. 91. L. bowringit, p. 92. L. albopunctatum, p. 93. L. bampfyldi, p. 95. L. vittigerum, p. 94. LL. atrocostatum, p. 94. L. singaporense, p. 95. L. quadrivittatum, p. 95. LYGOSOMA. 87 Distance between end of snout and fore limb twice in distance between axilla and groin. ZL. swrdum, p. 96. b. Frontoparietal paired; 22 scales round the body; lower eyelid RORY Ee ave spsoys5 om Sart gra dyrtels .. L. cophias, p. 96. I. Limbs rudimentary. Digits five, extremely short, subequal; a punctiform ear-opening ; 24 or 26 scales perm ecbe yay: ry A534). ste SHES Gee L. chaleides, p. 97. Digits two; ear hidden ; 26 scales round the COUT gS ee gS L. larutense, p. 97. Digits two to the fore limb; hind limb un- divided; ear hidden ; 22 scales round the ody..:....:2. RW AG ite so Qla wee e ae ee Se L. miodactylum, p. 98. Nors.—The ZL, indicum, Gray (Ann. & Mag. Nat. Hist. [2] xii, 1853, p. 388), ranging from the Eastern Himalayas and Southern Fig. 24.—Lygosoma indicum. China to Tenasserim, and which is here figured, will probably be found in the Malay Peninsula. It differs from ZL. maculatum in having only four large supraoculars. 86. Lygosoma stellatum. Bouleng. Ann. & Mag. Nat. Hist. (7) vi, p. 192 (1900). Distance between end of snout and fore limb 14 to 13 times in distance between axilla and groin. Limbs well developed, penta- dactyle ; the hind limb reaches the wrist or the elbow of the adpressed fore limb. Snout obtusely pointed ; lower eyelid scaly ; no supranasal ; rostral forming a straight suture with the fronto- nasal ; prefrontals meeting or forming a short median suture (in one specimen separated by a small azygous shield); frontal as long as frontoparietals and interparietal together; five supra- oculars, fifth very small; parietals forming a suture behind the interparietal; 2 or 3 pairs of nuchals; fifth labial below centre of eye. ar-opening oval, a little smaller than eye-opening; no auricular lobules. 24 smooth scales round the body, dorsals 88 SCINCID&. largest, those of the two median series more than twice as broad as long. A pair of enlarged preanals. Digits rather long, com- pressed; subdigital lamelle smooth, 22 to 25 under the fourth toe. Bronze-colour above, spotted ail over with black and white, the black spots preceding the white ones and more crowded on the sides; lips spotted with black; the spots disposed in trans- verse series on the tail ; lower parts bluish or greenish white. From snout to vent 80 millim.; tail 93. Larut Hills, Perak, between 3500 and 4000 ft. altitude. 87. Lygosoma presigne. Bouleng. Ann. & Mag. Nat. Hist. (7) vi, p. 191 (1900); id. Fase. Malay., Zool. i, p. 159 (1903); id. Journ. Fed. Mal, St. Mus. iii, p- 67 (1908). Distance between end of snout and fore limb 13 to 13 times in distance between axilla and groin. Limbs well developed, penta- dactyle ; the hind limb reaches the elbow of the adpressed fore limb. Snout obtusely pointed; lower eyelid scaly; no supra- nasal; rostral forming a straight suture with the frontonasal ; prefrontals usually forming a median suture; frontal very narrow behind, at least as long as frontoparietals and interparietal together ; 5 supraoculars, fifth very small; parietals forming a very short suture behind the interparietal; 3 pairs of nuchals; fifth labial below centre of eye. Ear-opening oval, nearly as large as eye-opening; no auricular lobules. 28 smooth scales round the body, dorsals largest, those of the two median series more than twice as broad as long. A pair of enlarged przanals. Digits rather long, compressed; subdigital lamellee smooth, 20 under the fourth toe. Reddish brown above, marbled with darker or with scattered black dots, grey on the sides, spotted with black and white; a series of large roundish black spots on each side of the neck and anterior part of body; lips spotted with black; tail black above and on the sides, with irregular annuli of whitish scales or brown with blackish cross-bars ; lower parts white. From snout to vent 110 millim.; tail (reproduced) 130. Fairly common on all the high hills of the Peninsula. 88. Lygosoma scotophilum. Bouleng. Journ. Bombay Nat. Hist. Soc. xiii, p. 335 (1900). Lygosoma flowert, Laidlaw, P. Z. 8. 1901, i, p. 310, Distance between end of snout and fore limb not much less than that between axilla and groin. Limbs well developed, slender, pentadactyle; the hind limb reaches the elbow, the axilla, or the shoulder. Snout obtusely pointed; lower eyelid scaly ; no supranasal; rostral forming a straight suture with the frontonasal ; prefrontals just meeting in the middle or narrowly LYGOSOMA, 89 separated ; frontal very narrow behind, as long as frontoparietals and interparietal together ; five supraoculars ; parietals forming a short suture behind the interparietal; no nuchals; fifth and sixth labials below the eye. ar-opening oval, smaller than the eye- opening ; no auricular lobules. 80 or 32 smooth scales round the body, dorsals largest. A pair of feebly enlarged preanals. Digits slender; subdigital lamelle smooth, 22 or 23 under the fourth toe. Brown above, with yellowish and dark brown spots; the latter may forma lateral band, spotted with yellowish, and a wavy vertebral band ; lips white, spotted with dark brown; lower parts white. From snout to vent 50 millim. ; tail 80. The type specimen was caught by Mr. A. L. Butler under a limestone rock in the Batu Caves, Selangor. The types of L. flowert are from the foot of Gunong Inas, Perak. Specimens have also been found near Kuala Lumpur, and at Ulu Gombak, Selangor, and on Pulau Rumpia, Sembilan Islands. 89. Lygosoma sanctum. Dum. & Bibr. Erp. Gén. v, p. 732 (1839) ; M. Weber, Zool. Ergebn. ii, p. 171, pl. xiv, fig. 4 (1890). Distance between end of snout and fore limb 1} times in distance between axilla and groin. Limbs well developed, penta- dactyle ; the hind limb reaches the axilla. Snout obtuse; lower eyelid scaly ; no supranasal ; rostral forming a broad suture with the frontonasal, which forms a narrow suture with the frontal; latter as long as frontoparietals and interparietal together; five supraoculars ; parietals forming a suture behind the interpar:etal ; no nuchals; fifth and sixth labials below the eye. Har-opening oval, rather large, but smaller than the eye-opening ;. no auricular lobules. 32 or 34 scales round the body, dorsals largest and finely striated, laterals smallest. A pair of large preanals. Digits long, compressed ; subdigital Jamellze feebly unicarinate, 25 or 26 under the fourth toe. A silvery vertebral band, bordered on each side by a black band spotted with whitish; sides greyish brown ; lower parts whitish. From snout to vent 48 millim.; tail 68. Originally described from Java. A specimen from Selangor, 1500 ft., is preserved in the Raffles Museum. 90. Lygosoma maculatum. Lissonota maculata, Blyth, Journ. Asiat. Soc. Bengal, xxii, p. 653 (1853). Mabuia maculata, Ginth. Rept. Brit. Ind. p. 84 (1864). Lygosoma maculatum, Bouleng. Cat. Liz. iti, p. 242 (1887); id. Faun. Brit. Ind., Rept. p. 196 (1890). 90 SCINCID®. Lygosoma mitanense, Annandale, Journ. Asiat. Soc. Bengal (2) i, p. 144 (1905). Distance between end of snout and fore limb 11 to 14 times in distance between axilla and groin. Limbs well developed, penta- dactyle; the hind limb reaches the elbow, the axilla, or the shoulder. Snout obtuse; lower eyelid scaly; no supranasal ; rostral perfectly flat or a little concave above, forming a broad suture with the frontonasal, which forms a narrow suture with the frontal; latter as long as frontoparietals and interparietal together ; five supraoculars ; parietals forming a suture behind the interparietal ; nuchals absent, or one or two pairs; fifth and sixth labials below the eye. Har-opening oval, rather large but smaller than the eye-opening; no auricular lobules. 38 to 42 smooth scales round the body, dorsals largest, laterals smallest. A pair of large preanals. Digits long, compressed ; subdigital lamelle feebly unicarinate, 16 to 21 under the fourth toe. Brown or olive-brown above, usually with two dorsal series of small dark brown spots; a dark brown lateral band, usually spotted with whitish and edged below with white; flanks white-spotted ; lower parts white. From snout to vent 65 millim.; tail 115. From the Eastern Himalayas and Northern Bengal to the Malay Peninsula (Larut Hills, Perak, 1000 ft.; also found at Kuala Lumpur and on the islands of the Pahang coast). 91. Lygosoma anomalopus. Bouleng. P. Z. S. 1890, p. 84, pl. xi, fig. 4. Lygosoma paradoxum, Werner, Verh. zool.~bot. Ges, Wien, xlvi, p- 18, pl. i, fig. 8 (1896). Distance between end of snout and fore limb nearly equal to distance between axilla and groin. Limbs well developed, penta- dactyle ; the hind limb nearly reaches the eye. Snout obtuse ; lower eyelid scaly ; no supranasal; rostral flat above, forming a broad suture with the frontonasal ; preefrontals forming a short median suture; frontal very narrow behind, as long as fronto- parietals and parietals together ; four supraoculars ; parietals in contact behind the interparietal ; no nuchals; fifth and sixth or sixth and seventh labials below the eye. Ear-opening oval, large but smaller than the eye-opening ; no auricular lobules. 38 smooth scales round the body, laterals smallest. . 144, Distance between end of snout and fore limb 14 to 2! times in distance between axilla and groin. Limbs well developed but short, pentadactyle, not meeting when pressed against the body. Snout obtuse ; lower eyelid scaly ; supranasals pr esent, in contact behind the rostal: frontonasal forming a suture with the frontal, which is as long as frontoparietals and interparietal together ; four supraoculars ; parietals forming a suture behind the inter- parietal; a pair of nuchals; fifth “(rarely fourth) upper labial below the eye, much longer haa deep, usually about twice as long as the shield preceding it. Har-opening small, round. 26 to 30 scales round the body, smooth or dorsals indistinetly tri- carinate. Marginal preanals a little enlarged. Digits moderate, compressed ; fourth toe a little longer than third, with 12 to 14 feebly keeled lamelle inferiorly. Yellowish brown or olive-brown LYGOSOMA. 93 above, each dorsal scale with a darker spot forming more or less continuous longitudinal lines; a dark brown dorso-lateral band, edged with yellowish above; sides pale pink to bright vermilion, spotted with black and yellow; yellow beneath, sometimes pale coral-red on the throat. From snout to vent 55 millim.; tail 65. First described from Hong Kong, this species has since been recorded from ‘Tonkin, Burma, Siam, the Malay Peninsula, Borneo, and Celebes. In the Malay Peninsula it is only known from Singapore and Jambu, one of the Patani States. Capt. Flower observes that this Scink spends the day hiding under stones, logs, &c., and only goes about after its prey at twilight. ; 96. Lygosoma albopunctatum. ee Paictata, Gray, Ann. & Mag. Nat. Hist. xviii, p. 480 Brmeces punctate, Cantor, Journ. Asiatic Soc. Bengal, xvi, p. 651 47), 3 es en Ginth. Rept. Brit. Ind. p. 92 (1864). Lygosoma albopunctatum, Bouleng. Cat. Liz. i, p. 809 (1887) ; id. Faun. Brit. Ind., Rept. p. 208 (1890). Distance between end of snout and fore limb 2 to 24 times in distance between axilla and groin. Limbs well developed but short, pentadactyle, not meeting when pressed against the body. Snout obtuse ; lower eyelid scaly ; supranasals present, in contact behind the rostral; frontonasal forming a suture with the frontal, which is as long as frontoparietals and interparietal together ; four supraoculars; parietals forming a suture behind the inter- parietal ; nuchals present or absent ; fifth or fifth and sixth labials below centre of eye, not longer than deep, not twice as long as the other labials. Har-opening small, round. 26 or 28 smooth scales round the body. Marginal preanals scarcely enlarged. Digits moderate, compressed ; fourth toe a little longer than third, with 12 to 15 feebly keeled lamelle inferiorly. Pale brown or rufous above, each dorsal scale with a darker spot forming longi- tudinal series ; sides spotted with black and white; lower parts yellowish white. From snout to vent 65 millim. ; tail 75. India, Assam, Burma, and Penang. 97. Lygosoma bampfyldii. KE. Bartlett, Journ. Straits Branch Asiatic Soc. No. 28, p. 96 (1895) ; Bouleng. Ann. & Mag. Nat. Hist. (7) vi, p. 192 (1900). Lygosoma schneidert, Werner, Zool. Jahrb., Syst. xiii, p. 487, pl. xxxi, fig. 1 (1900). Distance between end of snout and fore limb 1? times. in distance between axilla and groin. Limbs well developed but short, pentadactyle, not meeting when pressed against the body. 94 SCINCID A. Snout obtuse ; lower eyelid scaly ; supranasals present, in contact behind the rostral ; frontonasal forming a broad suture with the * frontal; prefrontals small; frontal broader than supraocular region, slightly longer than frontoparietals and interparietal together ; four supraoculars; parietals forming a suture behind the interparietal; fourth or fourth and fifth labials below the eye. Ear-opening rather small, oval, with three pointed lobules in front. 38 or 40 smooth scales round the body. No enlarged preeanals. Digits short, compressed ; fourth toe a little longer than third, with 16 obtusely keeled lamelle inferiorly. Pale brown above, head dark brown above, with a yellow band across the occipital region; sides of head yellow, with a dark brown spot below the eye; lower parts yellowish ; tail olive. From snout to vent 120 millim. Borneo and Sumatra. Discovered in the Larut Hills, Perak, by Mr. A. I. Butler. 98, Lygosoma vittigerum. Bouleng. Ann. Mus. Civ. Genova (2) xiv, p. 615 (1894) ; id. Journ. F, M.S. Mus. iii, p. 67 (1908). Distance between end of snout and fore limb not much less than that between axilla and groin. Limbs well developed, slender, pentadactyle ; the hind limb reaches nearly the axilla. Snout acutely pointed ; lower eyelid with an undivided transparent disk; no supranasal; nostril forming a straight suture with the frontonasal ; prefrontals just meeting or forming a median suture; frontal very narrow behind, as long as or a little shorter than frontoparietals and interparietal together; four supraoculars ; parietals forming a suture behind the interparietal; 3 or 4 pairs of nuchals; fifth labial below the eye. Ear-opening small, roundish; no auricular lobules. 28 smooth seales round the body, those of the two vertebral series much larger than the others, laterals very small. A pair of enlarged preanals. Digits slender ; subdigital lamellee smooth, 25 under the fourth toe. A greenish- white vertebral stripe, extending to the end of the snout, bordered on each side by a rather broad black stripe ; sides pale olive, with or without black dots ; lower parts greenish white. From snout to vent 40 millim.; tail 55. Originally described from Sereinu, Mentawei Islands, this species has since been rediscovered in Sarawak and in the Malay Peninsula at Kuala Teku, Pahang, 500 ft., and also at Ginting Bidai, 2300 ft. 99. Lygosoma atrocostatum. Scincus atrocostatus, Lesson, Voy. ‘ Coquille,’ Zool. ii, p. 50, pl. iv, fic. 3 (1880). Mabouya jerdoniana, Stoliezka, Journ. Asiat. Soc. Bengal, p, 172 (1870). - LYGOSOMA. 95 Lygosoma atrocostatum, Bouleng, Cat. Liz. ili, p. 295 (1882) ; S. Flower, P. Z. 8. 1899, p. 649. Lygosoma jerdonianum, Bouleng. t. c. p. 300. Distance between end of snout and fore limb 1+ to 14 times in distance between axilla and groin. Limbs well developed, penta- dactyle ; the hind limb reaches the elbow or the axilla. Snout obtusely pointed; lower eyelid with an undivided transparent disk ; supranasal present ; frontonasal forming a suture with the rostral and often also with the frontal ; latter smaller than the frontoparietal, which is single; four supraoculars ; interparietal small, the parietals meeting behind it; a pair of nuchals; four or five labials anterior to the large subocular, Har-opening oval, as large as or a little larger than the transparent palpebral disk, usually with one or two small projecting lobules anteriorly. 36 to 40 smooth scales round the body. Marginal preanals slightly enlarged. Digits moderately elongate, somewhat flattened except at the end; subdigital lamellz smooth, 35 to 38 under the fourth toe. Greyish, brownish, or olive-green above, with small darker and lighter spots ; a more or less distinct blackish lateral band or series of spots on each side ; greenish, yellowish, or orange below. From snout to vent 95 millim.; tail 170. A widely distributed species, ranging from Borneo to New Guinea, the Caroline and Santa Cruz Islands, and Cape York. Occurs also on Pulau Tikus Kechil, a small island off the North- east Coast of Penang, whence it was first described as Mabouya jerdoniana. 100. Lygosoma singaporense. Eumeces singaporensis, Steind, Sitzb. Ak. Wien, 1xii, i, p. 341, pl. iv, fig. 2 (1870). Lygosoma singaporense, Bouleng. Cat. Liz. ii, p. 297 (1887). Only known from Steindachner’s description. Apparently agrees with the preceding species, except in having only 34 scales round the body. Yellowish grey above; some of the scales on the flanks much lighter. Singapore. Annandale, Journ. Asiat. Soc. Bengal (2) i, p. 147, 1905, is probably right in uniting ZL. singaporense with L. atrocostatum. He records a specimen from Sinkep Island. 101. Lygosoma quadrivittatum. Peters, Mon. Berl. Ac. 1867, p. 19 ; Boulenger, Cat. Liz. iii, p. 329 (1887); id, Fascic. Malay., Zool. i, p. 159 (1903). Distance between end of snout and fore limb 14 times in distance between axilla and groin. Limbs well developed, penta- dactyle, not meeting when pressed against the body. Snout pointed ; lower eyelid with an undivided semitransparent disk ; 96 SCINCIDA, no supranasal; frontonasal broadly in contact with rostral and with frontal; preefrontals small ; frontal small, acutely pointed behind, scarcely longer than frontoparietal, which is single; four supraoculars ; parietals forming a suture behind the interparietal ; 3 or 4 pairs of nuchals; fifth upper labial below the eye. Har hidden under scales, indicated by a mere depression. 18 or 20 smooth scales round the body, of two dorsal rows largest. Pre- anals slightly enlarged. Digits slender; fourth toe the longest, with 15 or 16 lamelle inferiorly. Yellowish or pale brown above, with four blackish longitudinal bands, the median pair extending to the supraoculars, the lateral to the eyes; digits with dark cross-bars; lower parts yellowish or brownish white. From snout to vent 37 millim. 3orneo, Philippines, Celebes, Malay Peninsula. Found on Bukit Besar, Patani States, by Messrs. Annandale & Robinson, 102. Lygosoma surdum. Bouleng. Journ. Bombay Nat. Hist. Soc. xiii, p. 383, pl. —, fi (1900). o, 2 ‘sn Distance between end of snout and fore limb nearly twice in distance between axilla and groin, Limbs well developed but short, pentadactyle, widely separated when pressed against the body. Snout pointed; lower eyelid with an undivided semi- transparent disk ; no supranasal; frontonasal broadly in contact with rostral and with frontal; prafrontals small; frontal narrow, a little longer than frontoparietal, which is single ; four supra- oculars ; parietals forming a suture behind the interparietal ; three pairs of nuchals; fourth and fifth labials below the eye. Ear hidden under scales, indicated by a mere depression. 20 smooth scales round the body, of two dorsal rows largest. Preeanals scarcely enlarged. Fourth toe longest, with 16 Jamelle inferiorly. Uniform dark brown above, greyish beneath. From snout to vent 50 millim.; tail 67. Known from two specimens discovered by Mr. A. I. Butler in Selangor: the first on the Sungei Buloh River, among the roots of a large epiphytic plant; the second at Kuala Lumpur, under the dead fibre round a palm tree. 103. Lygosoma cophias. Bouleng. Journ. Fed. Mal. St. Mus. iii, p. 67, pl. iv, fig. 3 (1908). Distance between end of snout and fore limb twice in distance betweeni axilla and groin. Limbs well developed but short, widely separated when pressed against the body. Snout obtuse ; lower eyelid scaly ; no supranasal; frontonasal forming a broad suture with the rostral and a narrow one with the frontal, which is LYGOSOMA, 97 scarcely longer than the interparietal ; four supraoculars ; parietals in contact behind the interparietal ; no nuchals; fourth and fifth labials below the eye. Ear hidden, indicated by a depression. 22 smooth scales round the body. No enlarged preanals. Toes short, fourth not longer than third, with 12 smooth lamelle inferiorly, Brown above, mottled with darker, white beneath. From snout to vent 36 millim. A single specimen was obtained on Gunong Tahan, at an altitude of 3000 feet. 104. Lygosoma chalcides. Lacerta chaleides, Linn. Syst. Nat. i, p. 369 (1766). Lygosoma chaleides, Cantor, Journ. Asiat. Soc. Bengal, xvi, p. 660 (1847) ; Bouleng. Cat. Liz. iii, p. 340 (1887); S. Flower, P. Z. 8. 1899,.p. 652. Eumeces chalcides, Giinth. Rept. Brit. Iud. p. 90 (1864). Body much elongate ; limbs very weak, pentadactyle Snout. obtuse ; lower eyelid scaly ; no supranasal; frontonasal forming a suture with the rostral and with the frontal; preefrontals small ; frontal small, a little broader than the supraocular region; four supraoculars ; frontoparietal single, large; parietals forming a suture behind the interparietal ; fifth labial below eye, first largest. Ear-opening punctiform, about as large as nostril. 24 or 26 smooth scales round the body. Preanals not or very slightly enlarged. Digits extremely short, subequal. Pale brown above, with more or less distinct darker longitudinal lines running between the series of scales, or with fine longitudinal golden- brown lines; white beneath, uniform or with brown longitudinal lines. From snout to vent 96 millim.; tail 96. Southern China, Siam, Malay Peninsula, Java. Known from Penang, Perak, and Kelantan. Dr. Annandale observes that the limbs of this species”are of more use in progression than their small size would indicate. These lizards are, however, burrowing forms, so often associated with the Typhlopide that the Malays regard them as the larve of these snakes, 105. Lygosoma larutense. Bouleng. Ann. Mag, Nat. Hist. (7) v, p. 306 (1900). Body much elongate; limbs minute, didactyle. Snout obtuse ; lower eyelid scaly ; no supranasal ; frontonasal broadly in contact with rostral and with frontal; prefrontals small; frontal slightly longer than broad, broader than the supraocular region; four supraoculars ; parietals forming a suture behind the interparietal ; fourth labial below the eye. Har completely hidden. 26 smooth H 98 DIBAMID#%. scales round the body. maya eco Ceneye DryopHtors, p. 176. Pupil round ; ventrals and subcaudals with a suture-like lateral keel and a notch on each side corresponding to the keel .... CHRYSOPELREA, p. 176. Genus DIPSADOMORPHUS. Fitzing. in Tschudi, Faun. Per., Herp. p. 55 (1845). Maxillary teeth 10 to 14, subequal in size, followed by two or three enlarged, grooved fangs ; anterior mandibular teeth longest. 168 COLUBRID®. Head very distinct from neck ; eye moderate or large, with verti- eally elliptic pupil; posterior nasal more or less deeply concave. Body more or less compressed ; scales smooth, more or less oblique, with apical pits, in 17—25 (31) rows, the vertebral row more or less enlarged ; ventrals obtusely angulate laterally. Tail moderate or long ; subcaudals in two rows. Tropical Africa, Southern Asia, Papuasia, Australia. . . . Vn Seven species in the Malay Peninsula. ‘Arboreal and “nocturnal. Synopsis of the Species. I. Scales in 19 or 21 rows. A. Subcaudals 80-110; snout longer than eye. Scales in 19 rows ; preeocular not extending tovuppercurtice of head 3..00c 2.02 D. multimaculatus, p. 168. Scales in 21 rows; preeocular not extending to upper surface of head ...)....:.5 5). os). 0% D. gokool, p. 169. Scales in 21 rows; preocular extending to upper suriace sof head! 06 4. ye pene a. D. dendrophilus, p. 169. B. Subcaudals 114-166. Scales in 21 rows; snout not longer than CY OO an rae cat mate cnet amauee evo Ree D, jaspideus, p. 170. Scales in 19 rows; snout not longer than CYC: Sia. cick oti ea bat a Aone © oneatinte et oes D. drapiext, p. 171. Seales in 21 rows; snout longer than eye.. D. nigriceps, p. 171. II. Scales in 28 or 25 rows; subcaudals fel 4 UDO Bec. ct cisteny er ee et aca D. cynodon, p. 172. 182. Dipsadomorphus multimaculatus. Dipsas multimaculata, Boie, Isis, 1827, p. 549; Cantor, Journ. Asiat. Soc. Bengal, xvi, p. 923 (1847); Gunth. Rept. Brit. Ind. p. 811 (1864) ; Bouleng. Faun. Brit. Ind., Rept. p. 360 (1890). Dipsadomorphus multimaculatus, Bouleng. Cat. Sn. ii, p. 63 (1896). Anterior palatine teeth scarcely larger than the posterior ; anterior mandibular teeth moderately enlarged. Snout longer than eye. Rostral broader than deep ; frontal as long as broad or a little longer than broad, as long as or a little longer than its distance from the end of the snout, shorter than the parietals ; loreal as long as deep or deeper than long; one preocular, not extending to the upper surface of the head ; 2 postoculars ; tem- porals 242 or 2+8 (rarely 1+2); 8 upper labials, third, fourth, and fifth entering the eye; 4 or 5 lower labials in contact with the anterior chin-shields, which are as long as or a little shorter than the posterior. Scales in 19 (rarely 17) rows, vertebral row strongly enlarged. Ventrals 202-235; anal entire; subcaudals 80-106. Grey-brown above, with two alternating series of DIPSADOMORPHUS. 169 roundish dark brown spots and two, other series of smaller spots lower down on the sides; two blackish bands on the head, diverg- ing posteriorly ; a blackish streak from the eye to the angle of the mouth ; lower parts whitish, marbled or spotted with brown, and with a series of brown spots along each side. Total length 750 millim. ; tail, 165. Southern China to the Malay Peninsula and Archipelago. Obtained by Cantor in the hills of Penang. 183. Dipsadomorphus gokool. Dipsas gokool, Gray, Ul. Ind. Zool. ii, pl. xxxiii, fig. 1 (1834); Ginth. Rept. Brit. Ind. p. 313 (1864); Bouleng. Faun. Brit. Ind., Rept. p. 360 (1890). Dipsas cynodon, part., Cantor, Journ. Asiat. Soc. Bengal, xvi, p- 924 (1847). Dipsadomorphus gokool, Bouleng. Cat. Sn. iii, p. 64 (1896). Anterior palatine teeth scarcely larger than the posterior; anterior mandibular teeth feebly enlarged. Snout longer than eye. Rostral a little broader than deep; frontal as long as broad or slightly longer than broad, as long as its distance from the end of the snout, shorter than the parietals ; loreal as long as deep or deeper than long; 1 or 2 preoculars, not extending to the upper surface of the head; 2 postoculars; temporals 24+; 8 upper labials, third, fourth, and fifth entering the eye; 4 or 5 lower labials in contact with the anterior chin-shields ; posterior chin- shields as long as the anterior and in contact with each other. Scales in 21 rows, the vertebral row strongly enlarged. Ventrals 224-225; anal entire; subcaudals 87-94. Yellowish brown above ; head with an arrow-headed brown, black-edged marking, longitudinally bisected; a black streak on each side of the head, passing through the eye ; a yellowish vertebral streak ; a series of erect ¥Y-shaped markings on each side of the back ; lower parts yellowish, with a series of brown spots along each side. Total length 830 millim.; tail 170. Bengal, Assam, Penang. 184. Dipsadomorphus dendrophilus. Dipsas dendrophilus, Boie, Isis, 1827, p.549; Cantor, Journ. Asiat. Soc. Bengal, xvi, p. 923 (1847); Ginth. Rept. Brit. Ind. p. 310 (1864). Dipsadomorphus dendrophilus, Bouleng. Cat. Sn. iii, p. 70 (1896) ; S. Flower, P. Z. S. 1899, p. 680; Ridley, Journ. Str. Br. Asiat. Soc. 1899, p. 199. Malay names. Ular ringkup and ular chin-chin mas ; ular punti; ular tiyong. Anterior palatine teeth scarcely longer than the posterior ; anterior mandibular teeth moderately enlarged. Snout longer 170 COLUBRID&. than eye. Rostral a little broader than deep ; frontal as long as broad or a little longer than broad, as long as or a little shorter than its distance from the end of the snout, shorter than the parietals ; loreal as long as deep or a little longer than deep; one preocular, extending to the upper surface of the head but not reaching the frontal; 2 postoculars; temporals 24+2 or 2+3; 8 (exceptionally 9) upper labials, third, fourth, and fifth entering the eye; 4 or 5 lower labials in contact with the anterior chin- shields, which are as long as or a little longer than the posterior. Scales in 21 (rarely 23) rows, vertebral row more or less strongly enlarged. Ventrals 209-239; anal entire; subcaudals 89-110. Black above with yellow cross-bars, which are continuous across the back or are restricted to the sides ; labials yellow, edged with black ; throat and sometimes anterior part of belly yellow, the rest of the lower parts black or leaden blue-black. Total length 2310 millim. Lower Siam, Malay Peninsula and Archipelago. Recorded from most localities in the Peninsula. Dr. Annandale observes that this nocturnal snake is very vicious, and drums with its tail on the ground when alarmed. Mr. Ridley, on the contrary, describes it as a very quiet snake, becoming quite tame very shortly after capture. Its food consists of small mammals, frogs, lizards, other snakes, fish, and even slugs. 185. Dipsadomorphus jaspideus. Triglyphodon jaspideum, Dum. & Bibr. Erp. Gén. vii, p. 1093 (1854). Dipsas boops, Ginth. Rept. Brit. Ind. p. 509, pl. xxiv, fig. G (1864). Dipsadomorphus jaspideus, Bouleng. Cat. Sn. iii, p. 73 (1896). Anterior palatine and mandibular teeth feebly enlarged. Eye as long as the snout. Rostral broader than deep; internasals as long as the prefrontals; frontal 13 to 13 times as long as broad, much longer than its distance trom the end of the snout, as long as or a little shorter than the parietals ; loreal as long as deep or deeper than long; one preocular, narrowly separated from the frontal; 2 postoculars; temporals 242; 8 upper labials, third, fourth, and fifth entering the eye; 4 or 5 lower labials in contact with the anterior chin-shields; posterior chin- shields as long as or Jonger than the anterior, separated from each other by scales. Scales in 21 rows, vertebral row strongly en- larged. Ventrals 243-266; anal entire; subcaudals 140-166. Light brown or reddish above, mottled and speckled with black or dark brown, and with more or less distinct blackish cross-bars interrupted on the vertebral line; a series of large whitish spots on each side, partly on the ventrals; all the head-shields spotted with black, the larger spots light-edged; a black, light-edged DIPSADOMORPHUS. 171 longitudinal streak on the occiput; yellowish beneath, speckled with brown. Total length 1400 millim.; tail 370. Java and Borneo. Obtained in Kelantan by Dr. A. G. H. Smart and in Selangor by Mr. Butler, but nowhere common. Recorded from Singapore by F. Miiller, Verh. Nat. Ges. Basel, vu, 1882, p- lol. 186. Dipsadomorphus drapiezii. Dipsas drapiexit, Boie, Isis, 1827, p. 559. Dipsadomorphus drapiexi, Bouleng. Cat. Sn. ii, p. 74 (1896) ; S. Flower, P. Z.S. 1896, p. 889. Anterior palatine and mandibular teeth moderately enlarged. Eye as long as snout. Rostral broader than deep ; internasals shorter than the prefrontals ; frontal as long as broad or slightly longer than broad, as long as its distance from the end of the snout, shorter than the parietals; loreal small or absent; one ‘preocular, in contact with or narrowly separated from the frontal; 2 postoculars; temporals 2+2, 2+3, or 3+3,; 8 upper labials, third, fourth, and fifth, or fourth and fifth, entering the eye; 5 or 6 lower labials in contact with the anterior chin-shields, which are as long as or a little longer than the posterior. Scales in 19 rows, vertebral row scarcely enlarged. Ventrals 250-276; anal entire ;, subcaudals 114-163. Pale brown above with dark transverse spots, or brown with yellowish or reddish, dark-edged pale trans- verse bands each of which ends in a white spot on the side of the belly ; brownish white below, uniform or speckled with brown, with two more or less distinct brown longitudinal lines. Total length 1524 millim. Malay Peninsula and Archipelago. Recorded from Malacca ‘and Singapore. 187. Bipsadomorphus nigriceps. Dipsas nigriceps, Gunth. Ann. & Mag’. Nat. Hist. (8) xii, 1863, p. 859. Dipsadomorphus nigriceps, Bouleng. Cat. Sn. iii, p. 72 (1896). Dipsadomorphus pallidus, Bouleng. Fascic. Mal., Zool. i, p. 164, tig. (1903). Anterior palatine and mandibular teeth enlarged. Snout longer than eye. ostral broader than deep; frontal as long as broad, or a little longer than broad, as long as its distance from the end of the snout, shorter than the parietals; loreal as long as deep or longer than deep; one preocular, in contact with or narrowly separated from the frontal; two postoculars ; temporals 1+ 2, 2+3, or 3+3; 8 upper labials, third, fourth, and fitth entering the eye; 4 or 5 lower labials in contact with the anterior chin- shields, which are usually shorter than the posterior. Scales in 21 rows, vertebral row strongly enlarged. Ventrals 240-263 ; anal entire; subcaudals 140-154. Head uniform blackish or 172 COLUBRID&. purplish grey above; body reddish or pale greyish brown, uniform or irregularly mottled with darker, sometimes with the dorsal series of small black spots; upper lip and lower parts yellowish white ; belly and tail often speckled with grey. Total length 1650 millim. ; tail 410. Borneo, Java, and Selangor. The pale variety named D. pal- lidus was described from a single specimen from Jalor. 188. Dipsadomorphus cynodon, Dipsas cynodon, Boie, Isis, 1827, p. 559; Giinth. Rept. Brit. Ind. p. 808 (1869). Dipsas cynodon, part., Cantor, Journ. Asiat. Soc. Bengal, xvi, p. 924 (1847). Dipsadomorphus cynodon, Bouleng. Cat. Sn. ii, p. 78 (1896) ; S. Flower, P. Z.S. 1899, p. 681. Malay name, Ular sawa burong. Anterior palatine and mandibular teeth very strongly enlarged. Rostral broader than deep; internasals shorter than the pre- frontals ; frontal as long as broad or slightly longer than broad, as long as or a little longer than its distance from the end of the snout, shorter than the parietals; /oreal square, or longer than deep; one preocular, narrowly separated from the frontal; 2 post- oculars ; temporals 24+2, 243, or 3+3; 8 to 10 upper labials, three entering the eye; 4 or 5 lower labials in contact with the anterior chin-shields, which are smaller than the posterior. Scales in 23 (rarely 25) rows, vertebral row strongly enlarged. Ventrals 248-290 ; anal entire; subcaudals 114-159. Yellowish or pale reddish brown above, usually with dark brown or black transverse spots or cross-bars, or dark brown or black, with more or less distinct lighter cross-hars ; a dark streak on each side of the head, behind the eye; belly yellowish, uniform or speckled or marbled with brown, or entirely black. Total length 2450 millim. From Assam and Burma to the Malay Peninsula and Archi- pelago; generally distributed in the Malay Peninsula (Penang, Prov. Wellesley, Perak, Selangor, Johore Bahru, Jalor, Malacca, Singapore). A specimen taken by Dr. Annandale, coiled up on a bush about four feet above the ground, was sluggish in demeanour and made little attempt to escape. Genus PSAMMODYNASTES. Gunth. Cat. Col. Sn. p. 140 (1858). Maxillary teeth 9 to 11, third or third and fourth much en- larged, fang-like, followed by a short interspace, last enlarged and grooved; anterior mandibular teeth strongly enlarged. Head PSAMMODYNASTES. 1/32 distinct from neck, with angular canthus rostralis; eye rather large, with vertically elliptic or subelliptic pupil; nostril in a single nasal; frontal very narrow. Body cylindrical; scales Fig. 53.—Head of Psammodynastes pulverulentus. smooth, without pits, in 17 or 19 rows; ventrals rounded. Tail moderate or rather short ; subcaudals in two rows. South-Eastern Asia. ‘lwo species are known :— Two pairs of chin-shields separating the MRC ME NALNISIUS ish. Sat se ciate yo dim iee ome ake P. pulverwlentus, p. 173. Third lower labial very large, bordering the mental groove behind the small anterior RMS ACLS aie mevevare opcheij.tsonert able ence P. pictus, p. 174. 189. Psammodynastes pulverulentus. Psammophis pulverulenta, Boie, Isis, 1827, p. 547. Psammodynastes pulverulentus, Gituth. rept. Brit. Ind. p. 292 (1864); Bouleng. Faun. Brit. Ind., Rept. p. 363 (1890); id. Cat. Sn. i, p. 172 (1896) ; Wall, Journ. Nat. Hist. Soc. Bombay, xx, p- 72, figs. (1910). Snout short, pointed or somewhat turned up in the adult. . Rostral broader than deep; internasals much shorter than the prefrontals ; frontal twice to twice and a half as long as broad, much narrower, in the middle, than the supraocular, much longer than its distance from the end of the snout, a little shorter than the parietals; loreal about as long as deep, often transversely divided into two; 1 or 2 pra- and 2 to 4 postoculars ; temporals 2+3 (rarely 24+2); 8 upper labials, third, fourth, and fifth entering the eye; 3 (rarely 4) lower labials in contact with the anterior chin-shields, which are followed by two smaller pairs. 174 COLUBRID. Scales in 17 (rarely 19) rows. Ventrals 146-175; anal entire ; subeaudals 44-66. Dark brown or ochraceous above, with or without small darker and lighter spots; head usually with sym- metrical longitudinal markings; a more or less distinct dark streak on each side of the head, passing through the eye; usually a dark brown band along each side; lower parts powdered with brown, and with dark brown spots or longitudinal lines. Total length 610 millim. ; tail 130. Eastern Himalayas and Southern China to the Malay Peninsula and Archipelago. Recorded from Prov. Wellesley, Perak, Pahang, and Jalor. Noteworthy for its unprepossessing, viper-like appearance, this snake appears to be as a rule of a lively, vicious disposition. There are however exceptions, as a specimen caught by Major Wall in Burma, although very active, and taking up a menacing attitude, made no efforts to bite. This species is ovoviviparous, and feeds on lizards and frogs. It is the only snake at all common at high elevations over 5000 feet. 190. Psammodynastes pictus. Giinth. Cat. Col. Sn. p. 251 (1858); Bouleng. Cat. Sn. ili, p. 174 (1896) ; Laidlaw, P. Z. 5. 1901, ii, p. 578. Body more slender and tail longer than in the preceding Internasals as long as or a little shorter than the prefrontals , frontal 24 to 3 times as long as broad ; third lower labials very large, bordering the mental groove. Ventrals 152-169; sub- eaudals 60-78. Back with dark or light spots or transverse bars between two light stripes ; whitish beneath, speckled with brown, or with scattered black dots. Total length 475 millim. ; tail 90. Malay Peninsula, Sumatra, Biliton, Borneo. Recorded from Bukit Besar by Laidlaw. J have examined a specimen from Selangor preserved in the Kuala Lumpur Museum. Genus DRYOPHIS. Dalman, (#fvers. of Zool. Arb., Stockholm, 1822. Maxillary teeth 12 to 15, one or two in the middle much en- larged, fang-like, and followed by an interspace, after which the teeth are very small; one or two posterior grooved fangs, situated below the posterior border of the eye ; mandibular teeth increasing in length to the third or fourth, which is very large, fang-like. Head elongate, distinct from neck, with strong canthus rostralis and concave lores; eye rather large, with horizontal pupil; nostril in the posterior part of a single nasal; frontal narrow, more or less bell-shaped. Body much elongate and compressed ; DRYOPHIS. 175 scales smooth, without pits, disposed obliquely, in 15 rows, vertebral row slightly enlarged; ventrals rounded. Tail long, subcaudals in two rows. South-Eastern Asia. Two species in the Malay Peninsula. /Bssentially arboreal and ovoviviparous. 191. Dryophis prasinus. Boie, Isis, 1827, p. 545; Bouleng. Faun. Brit. Ind., Rept. p. 369 (1890) ; id. Cat. Sn. iii, p. 180 (1896) ; S. Flower, P. Z. 8. 1896, p- 890, and 1899, p. 682. Dryinus prasinus, part., Cantor, Journ. Asiat. Soc. Bengal, xvi, p. 928 (1847). Tragops prasinus, Giinth, Rept. Brit. Ind. p. 803 (1864). Malay names, Ular puchok and ular daun. Snout acutely pointed, projecting, rather more than twice as long as the eye. Internasals usually in contact with the labials ; 1 to 4 small loreals between the prefrontal and the labials ; frontal as long as or a little longer than its distance from the end of the snout, a little longer than the parietals ; one preocular, in contact with the frontal; 2 postoculars ; temporals 2+ 2 or 3+3, rarely 142; 9 upper labials, fourth, fifth, and sixth entering the eye; 4 lower labials in contact with the anterior chin-shields, which are shorter than the posterior. Scales in 15 rows, usually faintly keeled on sacral region. Ventrals 194-235; anal divided (rarely entire); subcaudals 154-207. Bright green, pale olive, or grey- brown, with a yellow line along each side of the lower parts; interstitial skin of the neck black and white. Total length 1790 millim.; tail 600. Eastern Himalayas and Indo-China to Malay Peninsula and Archipelago. Very common and generally distributed in the Malay Peninsula. Some specimens are gentle, whilst others are snappish or even fierce. ‘This snake feeds chiefly on lizards and frogs, which it paralyses by the poison injected through the erooved posterior fangs. 192. Dryophis xanthozona. Boie, Isis, 1827, p. 545; Bouleng. Cat. Sn. i, p. 180 (1896). Dryinus prasinus, part., Cantor, Journ. Asiat. Soc. Bengal, xvi, p- 928 (1847). Malay name, Ular kunyet. Distinguished from the preceding by the somewhat shorter snout, and fewer shields below. Ventrals 186-195; anal entire (rarely divided) ; subcaudals 115-156. Total length 1080 millim. ; tail 410. Java. Obtained in Penang by Cantor, and in Trang (Western Siamese Malay States) by Messrs. Robinson and Kloss. 76 COLUBRID. fal Genus DRYOPHIOPS. Bouleng. Cat. Sn. iii, p. 193 (1896). Maxillary teeth 20, subequal, the last two or three a little enlarged and grooved ; anterior mandibular teeth enlarged. Head elongate, distinct from neck, with distinct canthus rostralis; eye rather large, with horizontal pupil; nasal entire ; frontal narrow, bell-shaped. Body slender, compressed; scales smooth, oblique, with apical pits, in 15 rows; ventrals with suture-like lateral keel and a notch on each side corresponding to the keel. Tail long; subcaudals in two rows, keeled and notched like the ventrals. A single species in the Malay Peninsula. 193. Dryophiops rubescens. Dipsas rubescens, Gray, Il. Ind. Zool. ii, pl. Ixxxiv, fig. 2 (1834). Chrysopelea rubescens, part., Giinth. Rept. Brit. Ind. p. 299 (1864). Dryophiops rubescens, Bouleng. Cat. Sn. iii, p. 194 (1906). ‘Rostral twice as broad as deep; internasals shorter than the prefrontals ; frontal once and a half to once and two thirds as Jong as broad, as long as its distance from the end of the snout, shorter than the parietals ; loreal much elongate; one preocular, forming a suture with the frontal; 2 or 3 postoculars ; temporals 242; 9 upper labials, fourth, fifth, and sixth entering the eye; 4 or 5 lower labials in contact with the anterior chin-shields, which are much shorter than the posterior. Scales in 15 rows. Ventrals 188-199; anal divided ; subcaudals 111-1386. Bronzy or reddish brown above, with small black spots; upper surface of head with wavy longitudinal markings; a dark streak on each side of the head, passing through the eye; a median dark streak on the occiput and neck; labials with a few small black spots; lower parts yellow in front, reddish behind, dotted with darker, with or without scattered small black spots. Total length 750 millim. ; tail 210. Obtained in Kelantan by Dr. A. G. H. Smart. The type specimen is believed to be from the Malay Peninsula, and one specimen from the north of Penang Island is in the Selangor Museum. Otherwise this snake is known from Siam, Sumatra, Borneo, and the Mentawei and Natuna Islands, An essentially arboreal type. A specimen preserved in the British Museum had swallowed a Draco melanopogon. Genus CHRYSOPELEA, Boie, Isis, 1827, p. 520. Maxillary teeth 20 to 22, subequal, the last three a little longer and grooved; anterior mandibular teeth longest. Head distinct CHRYSOPELEA. OE from neck ; eye rather large, with round pupil. Body elongate, compressed ; scales smooth or feebly keeled, oblique, with apical pits, in 17 rows; ventrals with suture-like lateral keel and a notch on each side corresponding to the keel. Tail long; subcaudals in two rows, keeled and notched like the ventrals. Fig. 54.—Head of Chrysopelea ornata (after Sordelli). These tree-snakes, the opisthoglyphous analogues of the Dendro- plas, are known as Flying-Snakes, from the habit they have of shooting down from trees and descending to the ground at an oblique angle, the body being kept rigid the whole time of the “flight.” Mr. Shelford, who has investigated the phenomenon (P. Z. 8. 1906, p. 227), finds that the ventral surface between the lateral keels, which he compares to.hinges, can be drawn inwards, so that the snake becomes deeply concave along the ventral surface; at the same time there is a slight dorso-ventral flattening of the body. During this muscular contraction the snake is like a piece of bamboo bisected longitudinally, and is buoyed up in such a way as to explain its parachute-like descent from trees. Two species are known in the Malay Peninsula. 194. Chrysopelea ornata. Coluber ornatus, Shaw, Zool. iii, p. 477 (1802). Chrysopelea ornata, Boie, 1. c.: Bouleng. Faun. Brit. Ind., Rept. _p. 371 (1890); id. Cat. Sn. iii, p. 196 (1896) ; S. Flower, P. Z. S. 1899, p. 682; Wall, Journ. Nat. Hist. Soc. Bombay, xviii, p. 227, pl. vi (1908). Leptophis ornatus, part., Cantor, Journ. Asiat. Soc. Bengal, xvi, p- 934 (1847). Chrysopelea ornata, part., Giinth. Rept. Brit. Ind. p. 299 (1864). Snout much depressed, squarely truncate. Rostral broader than deep ; internasals nearly as long as the prefrontals; frontal once and one third to once and two thirds as long as broad, nearly as long as its distance from the end of the snout, as long as or slightly shorter than the parietals; loreal small and elongate (rarely fused with the prefrontal); one preocular, often in N 178 COLUBRID &. contact with the frontal ; 2 postoculars ; temporals 242; 9 or 10 upper labials, fifth and sixth, or fourth, fifth, and sixth entering the eye; 5 lower labials in contact with the anterior chin-shields, which are shorter than the posterior. Scales smooth or faintly keeled, in 17 rows. Ventrals 200-238, last usually divided; anal divided; subcaudals 106-138. Coloration very variable. Head black with yellow cross-bars and spots. Malay specimens black above, each scale with a round greenish-yellow spot or green with the scales black- edged; usually larger coral-red spots on the back, resembling a series of tetrapetalous flowers; ventrals ereenish yellow, usually edged with black. Young yellowish green with black transverse bands. Total length 1120 millim.; tail 310. India, Ceylon, Burma, and Southern China to Malay Peninsula and Archipelago. Generally distributed in the Malay Peninsula. Feeds on lizards, chiefly Geckos, and frogs, occasionally on bats. Some individuals are of gentle disposition, others are quite the reverse. Cantor says this species is remarkable for its gentleness, whilst Captain Flower describes it as the fiercest snake he has met. Although its bite appears to be harmless to man, it has, according to Flower, the effect of stupefying lizards to some extent. It is diurnal in its habits, and may be seen moving about in the hottest midday sunshine. According to Cantor, the female lays 6 to 8 white, elongated cylindrical eggs. 195. Chrysopelea chrysochlora. Dendrophis chrysochloros, Schleg. Phys. Serp. ii, p. 284 (1837). Leptophis ornatus, part., Cantor, Journ. Asiat. Soc. Bengal, xvi, p- 934 (1847). Chrysopelea ornata, part., Giinth. Rept. Brit. Ind. p. 299 (1864). Chrysopelea ehrysochlora, Bouleng. Cat. Sn. iii, p. 198 (1896) ; 8. Flower, P. Z. 8S. 1899, p. 685. Head rather shorter and snout less depressed than in the pre- ceding species. Scales smooth, in 17 rows, less oblique than in the preceding. Ventrals 181-199; subcaudals 98-120. Above, with yellow black-edged narrow transverse bands separated by broad bright red interspaces ; head olive-brown above, with a red chevron-shaped cross-band, pointing forwards, behind the eyes ; a black line on each side of the head; lips yellow ; ventral shields pale olive-green between the keels, bright lemon-yellow on the sides. Total length 739 millim. Burma, Malay Peninsula and Archipelago. Recorded from Penang, Johore, Kelantan, Selangor, and Singapore. HYDROPHIIN &. 179 Subfamily HY DROPHIIN A. Synopsis of the Genera. I. Ventral shields, if at all distinct, very small. A. Nasal shields in contact with each other on the median line of the snout. 1. Symphysial shield exposed. No ventral shields; scales all juxtaposed .... Hyprus, p. 180. Ventral shields distinct at least in the anterior part of the body; scales imbricate in the anterior part of the body ....°........... Hypropuis, p. 181. Ventral shields distinct at least in the anterior part of the body ; scales all juxtaposed .... ENnuypris, p. 192. 2. Symphysial shield narrow, partly con- cealed in a deep groove in the chin... ENuypriNA, p. 193. B. Nasal shields separated by internasals ; scales all juxtaposed .. 2... 5... ccaes THALASSOPHIS, p. 194. IL. Ventrals large ; scales all imbricate. Nostrils on upper surface of snout ......... AIPYSURUS, p. 195. PAPURIESUMECRAN 52 5P ath cd ot nolele GBs Sale PLaTuRwSs, p. 196. ZS AS S Serge ee E SESE Terxetetcovesr. A as - » Fig. 55.—Views of right maxillo-palatal aren. A, Platurus. B. Enhydris. C. Hydrus. m, Maxillary. pl. Palatine. pt. Pterygoid. ¢p. Transpalatine or Ectopterygoid. The presence or the absence of a groove on the small teeth behind the poison-fangs has been used by me for defining genera, but it has been shown, by Stejneger and by Wall, that this character must be given up, the groove being found to be present in species believed to be deprived of it, when a sufficiently strong magnifying power is applied to the examination of the a The N 180 COLUBRID &. generic distinction between Hydrophis and Distica is consequently abandoned. The snakes of this and the following subfamily, constituting the Series Proteroglypha, or Poisonous Colubrine Snakes, are all highly dangerous to man, unless of gentle disposition, sueh as Platurus among the Sea- Snakes, and Callophis and Doliophis among the terrestrial forms. The physiological action of their venoms, so far as these have been investigated, is very different from that of the Viperine Snakes; the paralytic action upon the nervous system is their best marked feature. Respiratory paralysis is quickly brought about in Mammals by bringing the poisons into contact with the central nervous mechanism which controls respiration. By far the most active poison is that of the Common Sea-Snake, Lnhydrina valakadien ; next in order follow Bungarus candidus, Naia tripu- dians, Naia bungarus, and Bungarus fasciatus. For a recent resumé of our knowledge of Snake-poison, cf. C. J. Martin and G. Lamb in T. C. Albutt and H. D. Rolleston’s ‘System of Medicine,’ 1907. With the exception of Platurus, and possibly also Aipysurus, the Hydrophiinze are absolutely aquatic, never leaving the water, and feeding on fishes and crustaceans. With two exceptions, they only occur in salt water. According to Cantor, the large individuals are very ferocious, the young ones less so. Fortunately for the fishermen, who often bring them up in their nets, the light blinds these snakes, which, when out of their element, become sluggish and soon expire. The fishermen in the Straits of Malacca are: aware of the dangerous nature of these snakes, and therefore take care to destroy them while landing the fishes; they call them Ular laut, ‘‘ serpents of the sea,” among which, however, the innocuous Chersydrus granulatus is also comprised. On the Patani Coast they are called Ular terang or yerang, or Ular gelireh. All sea-snakes bring forth live young. Enhydrina valakadien is extremely common on the coasts of the Maiay Peninsula; the other species are comparatively rare. On the habits, cf. Cantor, Trans. Zool. Soe. ii, p. 303 (1841). Genus HYDRUS. Schneid. Hist. Amph. i, p. 288 (1799). Maxillary bone longer than the ectopterygoid, not extending forwards as far as the palatine; poison-fangs rather short, followed by 7 or 8 small teeth. Nostrils superior; snout long; head-shields large. nasals in contact with each other; a preocular, no loreal. Body rather short; scales hexagonal or squarish, juxtaposed ; no. distinct ventrals. A single species. HYDROPHIN. 181 196. Hydrus platurus. Anguis platurus, Linn. Syst. Nat. i, p. 391 (1766). Hydrus bicolor, Schneid. 1. c. p. 242; Cantor, Journ. Asiat. Soc. Bengal, xvi, p. 1056 (1847). Pelamis bicolor, Giinth. Rept. Brit. Ind. p. 382 (1864); Fayrer, Thanatoph. Ind. pl. xvii (1874). Hydrus platurus, Bouleng. Faun. Brit. Ind., Rept. p. 897 (1890) ; id. Cat. Sn. ii, p. 267 (1896). Rostral as deep as broad or a little broader than deep ; frontal large, at least as long as the snout or the parietals; one or two pree- and two or three postoculars; one or two suboculars some- times present; temporals small and numerous; 7 or 8 upper labials ; chin-shields small or indistinct. 45 to 47 scales round the body, smooth in the female and young, laterals and ventrals rough with one, two, or three small tubercles in the male. Black and yellow, the markings very variable, or black above and brown beneath, with a yellow lateral band; tail usually yellow with black spots. Total length 700 millim. ; tail 80. Indian Ocean; Tropical and Sub-tropical Pacific. The most widely-distributed sea-snake. Recorded from the Province Wellesley, Singapore, and the Gulf of Siam. Genus HYDROPHIS. Daudin, Hist. Rept. vii, p. 872 (1803). Maxillary longer than the lower aspect of the ectopterygoid, not extending forwards as far as the palatine ; poison-fangs large, Fig. 56.—Head of Hydrophis gracilis. followed by a series of 4 to 18 small teeth. Head moderate or small; nostrils superior, pierced in a single or divided nasal shield, which is in contact with its fellow ; head-shields large ; preeocular 182 COLUBRIDA. present ; loreal usually absent. Body more or less elongate, often very slender anteriorly ; scales on anterior part of body imbricate ventrals very small, if distinct. Indian and Pacific Oceans, from the Persian Gulf to Japan and New Caledonia. So far, only 15 species can be recorded from the coasts of the Malay Peninsula, but many more will be discovered. Synopsis of the Species. I. Head not remarkably small, nor neck remarkably slender. A. All the scales distinctly imbricate ; ventrals usually in pairs, except quite anteriorly ; no chin-shields; 9 or 10 upper labials; 59-47 scales round neck, 48-57 round body* .......... B. Scales on posterior part of body feebly imbricate or juxtaposed ; one or two pairs of chin-shields; 7 or 8 upper labials. 1. Eye as long as or a little longer than its distance from the mouth ; second par of chin-shields, if distinct, separated by several scales; 2 or 3 superposed anterior temporals ; 35— 42 scales round neck, 40-50 round Dod yy poke. cies eee ee 2. Eye much shorter than its distance from mouth in the adult ; two pairs of chin-shields, in contact on the middle line, or posterior pair sepa- rated by a single scale ; 27-33 scales round neck, 52-45 round body. A single large anterior temporal; scales smooth or with a central tubercle or short obtuse keel. Gn vis. ot Lee eee A single large anterior temporal ; scales very strongly keeled, many of the keels broken lipanto tubercles\<../s2. cece. eee Two superposed anterior temporals; scales very strongly keeled, the keels often broken up into tubercles .............. C. Scales slightly imbricate, 15-17 round neck, 19-21 round body; eye as lone as its distance from mouth; 5 upper labials, followed by a large temporal descending to the edge of the mouth. H., stokesii, p. 188. H, ornatus, p. 184. HI. brugmansit, p. 184. H. wrayt, p. 185, H. cyanocinctus, p. 185. HI, jerdoni, p. 186. * At its thickest point. HYDROPHIS. II, Head very small; neck very slender; eye not much shorter than its distance from mouth. A. 23-40 seales round neck, 33-55 round body. 1. Two superposed anterior temporals. 35-38 scales round neck, 48-50 round body ; 183. PEE TOO SOON ce seca wk acai d a cralbrealeta H. cerulescens, p 187. 27-29 scales round neck, 39 round body ; CST LORS 0S 63 ee ee H, nigrocinctus, p. 187, 2. A single anterior temporal. a. Third labial not in contact with prefrontal. a. Frontal as long as its distance from rostral. Rostral broader than deep; 31-40 scales ° round neck, 40-50 round body ; ventrals MN RMN Stoel aic) Sis as alauerw ayaa sls 6 apsi H. diadema, p. 188. Rostral broader than deep; 31 scales round neck, 55 round body ; ventrals 422....... H. rhombifer, p. 188 Rostral nearly as deep as broad; 25-5 scales round neck, 40-48 round body; WEMpne S754 —H0Oloi45 ke os sacs e cy eloieiaolene H, fasciatus, p. 189. 8. Frontal much shorter than its distance from rostral. 5 upper labials; 25 scales round neck, 33 round body; ventrals 3860 ...........%.'. H., klossi, p. 190. 6 or 7 upper labials ; 35-45 scales round neck, 43-45 round body ; ventrals 240-290 ..., H. torquatus, p. 190. e. Third labial in contact with pre- frontal ; 23-25 scales round neck, 41-47 round body ; ventrals 412— EEO syste ves eo chia ots cdl oi < 9 Vaglh oh H. cantoris, p. 191. B. 19-21 scales round neck, 29-33 round body ; ventrals 225-297 .......... H. gracilis, p. 191. 197. Hydrophis stokesii. Hydrus stokesit, Gray, in Stokes, Discov. Austral. i, p. 502, pl. iii (1846). Hydrophis annulatus, Gray, Cat. Sn. p. 59 (1849). Hydrophis stokesti, Gunth. Rept. Brit. Ind. p. 8683 (1864). Distira stokesti, Bouleng. Faun. Brit. Ind., Rept. p. 408 (1890); id. Cat. Sn. iii, p. 288 (1896). Head moderate; body stout. Eye shorter than its distance from the mouth. MRostral as deep as broad; frontal longer than broad, as long as or slightly longer than its distance from the rostral; one pre- and two postoculars; 9 or 10 upper labials, fourth, fifth, and sixth entering the eye, if not divided to form a series of suboculars; 2 or 3 superposed anterior temporals ; no chin-shields. 39 to 47 scales round neck, 48 to 57 184. COLUBRID. round thickest part of body ; scales much imbricate in the adult, pointed, keeled, the keels frequently broken up into two tubercles. Ventrals usually distinct only quite anteriorly, then in pairs and not larger than the adjoining scales, 230-267. Yellowish or pale brownish, with broad black dorsal cross-bands, or with complete black annuli. Total length 1510 millim.; tail 200. From the Mekran Coast and the Chinese Sea to the North Coast of Australia. Two specimens from Singapore (one of which is the type of Gray’s H. annulatus) are preserved in the British Museum. This snake produces 12 to 14 young, the length of which is from 30 to 42 millim. 198. Hydrophis ornatus. Aturia ornata, Gray, Zool. Mise. p. 61 (1842). Hydrophis ocellata, Gray, Cat. Sn. p. 53 (1849); Gunth. Rept. Brit. Ind. p. 378, pl. xxv, fig. P (1864). Hydrophis ornata, Ginth. op. cit. p. 376, pl. xxv, fig. V. Hydrophis elliott, Gunth. op. cit. p. 377, pl. xxv, fig. N. Distira ornata, Bouleng. Faun. Brit. Ind., Rept. p. 411 (1890) ; id. Cat. Sn. iii, p. 290 (1896). Head moderate ; body moderately elongate. Eye as long as or a little longer than its distance from the mouth. Rostral broader _than deep ; frontal longer than broad, as long as or a little longer than its distance from the rostral or the end of the snout; one pre-and two or three postoculars ; 2 or 3 superposed anterior temporals; 7 or 8 upper labials, third and fourth entering the eye; anterior chin-shields in contact, posterior, if distinct, sepa- rated by 2 or 3 scales. 35 to 42 scales round neck, 40 to 50 round thickest part of body; scales feebly imbricate anteriorly, juxtaposed and hexagonal in the middle of the body, smooth in the young, with a central tubercle or short keel in the adult. Ventrals feebly enlarged, 210-300. Young with blackish cross- bars, tapering on the sides, and with one or more lateral series of roundish dark spots; the bands may be confluent in some speci- mens, which are uniform blackish olive above and white beneath. Notal length 1200 millim. ; tail 130. Krom the Persian Gulf to North Australia. Recorded from the Gulf of Siam, and obtained at Patani by the Skeat Expe- dition. 199. Hydrophis brugmansii. Boie, Isis, 1827, p. 554. Hydrus striatus, part., Cantor, Journ, Asiat. Soc. Bengal, xvi, p. 1047 (1847). Hydrophis cyanocincta, part., Gintb. Rept. Brit. Ind. p. 867 (1864). HYDROPHIS. 185 Hydrophis robusta, Ginth. op. cit. p. 364 ; Fayrer, Thanatoph. Ind. pl. xxi (1874). Distira robusta, Bouleng. Faun. Brit. Ind., Rept. p. 409 (1890). Distira brugmansii, Bouleng. Cat. Sn. iii, p. 292 (1896). Head moderate ; body elongate. Eye shorter than its distance from the mouth. Rostral broader than deep ; frontal much longer than deep, as long as its distance from the rostral or the end of the snout ; one pre- and one or two postoculars; a single large anterior temporal, sometimes descending to the border of the mouth ; 7 upper labials, third and fourth, or third, fourth, and fifth entering the eye; two pairs of chin-shields, in contact on the middle ine. 27 to 31 scales round neck, 32 to 40 round thickest) part of body ; scales rhomboidal and subimbricate, smooth or each with a more or less distinct central tubercle or short obtuse keel. Ventrals distinct throughout, smooth or bituber- culate, 300-354. Greenish yellow above, dorsal scales with black margins, with black cross-bands or annuli, which are narrower than the interspaces between them ; sides and lower parts yellow ; end of tail black. Total length 1800 millim.; tail 120. - Persian Gulf to Malay Archipelago. Obtained at Penang by antor. 200. Hydrophis wrayi. Distira wrayi, Bouleng. Ann. & Mag. Nat. Hist. (7) v, p- 307 (1900). Head moderate; body long, rather strongly thickened posteriorly. Eye minute. Rostral considerably broader than deep; frontal nearly twice as long as broad, slightly shorter than its distance from the rostral; one pre- and one postocular; a single very large anterior temporal, nearly reaching the oral border ; 7 upper labials, third and fourth entering the eye; two pairs of chin-shields, in contact with each other. 27 scales round neck, 37 round thickest part of body; scales feebly imbricate, very strongly keeled, many of the keels broken up into two tubercles. Ventrals small, bicarinate, the keels mostly broken up into two tubercles, 296. Tail ending in a spine-like compressed scale. Blackish, with 67 narrow light annuli, which are olive on the back, yellow on the sides and on the belly. Total length 940 millim. Known from a single male specimen obtained on the Perak Coast. 201. Hydrophis cyanocinctus. Daud. Hist. Rept. vii, p. 883 (1803); Giinth. Rept. Brit. Ind. p. 367, part. (1864); Fayrer, Thanatoph. Ind. pl. xxiii (1874). 186 COLUBRID. Hydrus striatus, part., Cantor, Journ. Asiat. Soc. Bengal, xvi, p. 1047 (1847). Hydrophis aspera, Gray, Cat. Sn. p. 55 (1849); Giinth. op. cit. p- 365, Distira cyanocincta, Bouleng. Faun. Brit. Ind., Rept. E 410 (1890) ;. id. Cat. Sn. iii, p. 294 (1896). Head moderate ; body elongate. Eye shorter than its distance from the mouth in the adult. Rostral slightly broader than deep ; frontal much longer than broad, as long as its distance from the rostral or the end of the snout ; one pre-and two postoculars ; two superposed anterior temporals ; 7 or 8 upper labials, third and fourth, fourth and fifth, or third, fourth, and fifth entering the eye ; two pairs of chin-shields, in contact on the middle line, or posterior pair separated by one scale. 27 to 33 scales round neck, 39 to 45 round thickest part of body ; scales rhomboidal and sub- imbricate, with a short kee] which is very strong, and broken up into two or three tubercles, in adult males. Ventrals distinct throughout, smooth or with two or more tubercles, 281-385. Greenish olive above, with dark olive or black cross-bars or annuli, broadest on the back, and sometimes joined by a black band running along the belly; or yellowish with a black vertebral stripe sending off a few bar-like processes on the neck. Total length 1500 millim.; tail 140. Persian Gulf to Japan and New Guinea. The type of Gray’s H. aspera is from Singapore. 202. Hydrophis jerdonii. Hydrus nigrocinctus, var., Cantor, Journ. Asiat. Soc. Bengal, xvi, p- 1050, pl. x1, fig. 8 (1847). Kerilia jerdonn, Gray, Cat. Sn. p. 57 (1849). Hydrophis jerdontii, Ginth. Rept. Brit. Ind. p, 362, pl. xxv, fig. B (1864) ; Fayrer, Thanatoph. Ind. pl. xx (1874). Distira jerdonii, Bouleng. Faun. Brit. Ind., Rept. p. 408 (1890) ; id. Cat. Sn. iii, p. 299 (1896). Head short, snout declivous and rather pointed ; body mode- rately elongate. Eye as long as its distance from the mouth. Rostral as deep as broad; frontal longer than broad, nearly as long as its distance from the end of the snout; one pre- and one postocular ; 5 upper labials, third and fourth entering the eye; a single large anterior temporal, descending to the labial margin ; one or two pairs of chin-shields. 15 or 17 scales round neck, 19 or 21 round body; scales broader than long, slightly imbricate, strongly keeled. Ventrals feebly enlarged, more or less distinctly bituberculate, 224-2938. Olive above, yellowish beneath, with black cross- bands, which form complete rings in young and half- grown specimens ; a black spot may be present between each pair of annuli ‘ Total length 910 millim. ; tail 100. HYDROPHIS. 187 Bay of Bengal, coasts of the Malay Peninsula and Borneo. Cantor obtained a single specimen, captured in a fishing-stake off Penang; several were found on the Patani Coast by the Skeat Expedition and by Messrs. Annandale and Robinson. 203. Hydrophis czrulescens. Hydrus cerulescens, Shaw, Zool. iii, p. 561 (1802). Hydrophis cerulescens, Ginth. Rept. Brit. Ind. p. 365, pl. xxv, fig. C (1864): Bouleng. Faun. Brit. Ind., Rept. p. 400 (1890) ; id. Cat. Sn. ii, p. 275 (1896). Head very smail ; body long, very slender anteriorly. Hye as long as its distance from the mouth. Rostral broader than deep ; frontal longer than broad, shorter than its distance from the rostral; one pre- and one postocular ; two superposed anterior temporals ; 7 upper labials, third and fourth entering the eye; chin-shields very small, posterior pair separated by scales. 35 to 38 scales round neck, 48 to 50 round thickest part of body ; scales rhomboidal, imbricate, with a strong short keel. Ventrals distinct throughout, 280-309. Grey above, with black cross-bands, broadest on the back, forming complete rings or interrupted on the belly ; head uniform black. Total length 665 millim. ; tail 75. Coasts of India and the Malay Peninsula. Dr. Cantor’s collec- tion contained a specimen from Penang. Others were obtained on the Perak Coast by Mr. L. Wray and on the Patani Coast by Messrs. Annandale and Robinson. 204. Hydrophis nigrocinctus. Daud. Hist. Rept. vii, p. 380 (1808); Giinth. Rept. Brit. Ind. p. 368, pl. xxv, fig. L (1864); Fayrer, Thanatoph. Ind. pl. xxv (1874) ; Bouleng. Faun, Brit. Ind., Rept. p. 400 (1890) ; id. Cat. Sn. i, p. 277 (1896). Head small; body long, slender anteriorly. Eye as long as its distance from the mouth. Rostral broader than deep ; frontal longer than broad, as long as its distance from the end of the snout ; one pre- and one or two postoculars ; a small loreal some- times present; two superposed anterior temporals; 7 upper labials, third and fourth entering the eye; two pairs of chin- shields, posterior separated by scales. 27 or 29 scales round neck, 39 round thickest part of body; scales imbricate, rhom- boidal, keeled. Ventrals feebly enlarged, 310-331. Pale olive above, yellowish beneath, with black annuli, which are broader on the back. Total length 1000 millim.; tail 100. Bay of Bengal and Straits of Malacca. Obtained also on the East Coast, at Patani, by the Skeat Expedition. 188 COLUBRID. 205. Hydrophis diadema. Hydrophis diadema, Giinth. Rept. Brit. Ind. p. 373, pl. xxv, fig. 8 (1864). Hydrophis stricticollis, Ginth. op. cit. p. 3876, pl. xxv, fig. R; Fayrer, Thanatoph. Ind. pl. xxviii (1874). Hydrophis obscurus (non Daud.), Bouleng. Faun. Brit. Ind., Rept. p. 403 (1890) ; id. Cat. Sn. iii, p. 284 (1896); S. Flower, P.Z.S. 1899, p. 687. Head very small; body long, extremely slender anteriorly. Eye as long as its distance from the mouth. Rostral broader than deep ; frontal longer than broad, as long as its distance from the rostral or the end of the snout; one pre- and one or two postoculars; a single anterior temporal; 7 or 8 upper labials, third and fourth entering the eye; two pairs of chin-shields, posterior small and usually separated by scales. 31 to 40 scales round neck, 40 to 50 round thickest part of body; scales rhom- boidal, imbricate, feebly keeled in the female, strongly in the male, the keels often broken up into tubercles. Ventrals very feebly enlarged, bicarinate in the male, 310-438. Olive or dark green above, with yellowish cross-bars, which form complete rings round the slender part of the body, whilst further down they are interrupted on the back; a yellow spot on the snout and a yellow streak on each side of the upper surface of the head; or pale olive with dark cross-bands forming rings on the anterior part of the body. Total length 970 millim.; tail 105. Bay of Bengal to Malay Archipelago ; Gulf of Siam. Hydrophis obscurus and chloris of Daudin are identical with H, coronatus, Gthr., as pointed out by Wall (Mem. Asiat. Soe. Bengal, ii, p. 202), not with this species. 206. Hydrophis rhombifer. Bouleng. Ann. & Mag. Nat. Hist. (7) v, p. 306 (1900). Head very small; body long, extremely slender anteriorly. Hye a little longer than its distance from the mouth. Rostral considerably broader than deep ; frontal small, longer than broad, as long as its distance from the rostral; one pre- and one postocular ; a single anterior temporal; 7 upper labials, third and fourth entering the eye ; two pairs of small chin-shields, in contact with each other. 31 scales round the neck, 55 round the body; scales smooth, rhomboidal and imbricate anteriorly, elsewhere hexagonal, subimbricate, each with one or several small tubercles. Ventrals very small, 422. Head and neck black, the latter with two series of round yellowish spots; body yellowish white, with a series of blackish rhomboidal spots on the back, these spots confluent on the vertebral line ; end of tail black. Total length 620 millim.; tail 47. A single specimen is known, from the coast of Perak. HYDROPHIS. 189 Fig. 57.—Hydrophis rhombifer. 207. Hydrophis fasciatus. Hydrus fasciatus, Schneid. Hist. Amph. 1, p. 240 (1799). Hydrophis chloris (non Daud.), Giinth. Rept. Brit. Ind. p. 370 (1864). Hydrophis lindsayi, Giinth. op. cit. p. 871. Hydrophis atriceps, Giinth. 1. c. pl. xxv, fig. I. Hydrophis fasciatus, Peters, Mon. Berl. Ac. 1872, p. 849, pl. i, fig. 1; Bouleng. Faun. Brit. Ind., Rept. p. 404 (1890) ; id. Cat. Sn. ui, p. 281 (1896). Head very small; body long, very slender anteriorly. Eye a little longer than its distance from the mouth. Rostral nearly as deep as broad; frontal longer than broad, as long as its distance from the rostral; one pre- and one or two postoculars ; a single anterior temporal; 6 or 7 upper labials, third and fourth entering the eye; two pairs of small chin-shields, in contact with each other. 25 to 31 scales round neck, 40 to 48 round thickest part of body; all scales rhomboidal and imbricate, or scales sub- imbricate or juxtaposed on the posterior part of the body, on the neck smooth, on the body with a small tubercle or short keel. 190 COLUBRIDA. Ventrals feebly enlarged, 345-500. Head and neck black, the latter with yellowish cross-bands ; body pale, with black cross- bands or annuli, which are broadest on the back. Total length 1000 millim.; tail 85. Coasts of India to China and New Guinea. Cantor obtained a young specimen at Penang. 208. Hydrophis klossi, sp. n. Head small; body long, very slender anteriorly. Eye nearly as long as its distance from the mouth. Rostral a little broader than deep; frontal very small, as long as broad, not half as large as the supraocular; a single anterior temporal ; 5 upper labials, fourth, or third and fourth, entering the eye; two pairs of chin- shields, in contact with each other. 25 scales round the neck, 33 round thickest part of body; scales imbricate, smooth on anterior part of body, keeled on posterior part. Ventrals feebly enlarged, 360. Head and anterior part of body black, the former with small yellowish spots, the latter with yellowish cross-bars, which gradually extend to the belly and transform into rings ; body olive above, yellowish beneath, with black rings, which are broader than the light interspaces on the back, narrower on the belly. Total one 900 millim.; tail 75. This species is based on a single specimen, from Thuala, Selangar, received from the Selangor Museum. 209. Hydrophis torquatus. Hydrus nigrocinctus (non Daud.), Cantor, Journ. Asiat. Soc, Bengal, xvi, p. 1049 (1847). Hydrophis torquatus, Giinth. Rept. Brit. Ind. p. 369, pl. xxv, fic, H (1864); Bouleng. Faun. Brit. Ind., Rept. p. 402 (1890) ; id. Cat. Sn. ill, p. 285 (1896). Head small; body long, very slender anteriorly. Eye as long as its distance from the mouth. KRostral broader than deep; frontal small, as long as broad or a little longer than broad, shorter than its distance from the rostral; one pre- and one postocular; a single anterior temporal; 6 or 7 upper labials, third and fourth entering the eye; two pairs of chin-shields, in contact with each other. 33 or 35 seales round neck, 43 or 45 round thickest part of body; scales imbricate and keeled. Ven- trals feebly enlarged, 240-290. Pale grevish olive, with blackish cross-bands tapering ot: the sides. Total length 560 millim.; tail 50. Bay of Bengal and Straits of Malacca. HYDROPHIS. 191 210. Hydrophis cantoris. Hydrus gracilis, part., Cantor, Journ. Asiat. Soc. Bengal, xvi, p- 1051 (1847). Hydrophis cantoris, Gunth. Rept. Brit. Ind. p. 374, pl. xxv, fig. U (1864); Bouleng. Faun. Brit. Ind., Rept. p. 405 (1890) ; id. Cat. Sn. iii, p. 281, pl. xiv (1896). Head very small; body long, extremely slender anteriorly. Diameter of eye equal to or a little less than its distance from the mouth. ostral deeper than broad; frontal small, longer than broad, hardly as long as its distance from the rostral; one pre- and one postocular ; a single anterior temporal; 6 upper labials, third in contact with the prefrontal, third and fourth entering the eye; two pairs of small chin-shields, in contact with each other. 23 to 25 scales round neck, 41 to 47 round thickest part of body; scales smooth, rhomboidal and imbricate anteriorly, elsewhere hexagonal, juxtaposed, each with two or three tubercles one before the other. Ventrals hardly enlarged, 412-456. Body dark olive or blackish anteriorly, with yellowish cross-bands above; posterior part of body olive above, yellowish on the sides; tail with olive vertical bars; a blackish streak along the belly. Total length 7600 millim.; tail 130. Bay of Bengal and Straits of Malacca. Cantor’s type specimen is from Penang. 211. Hydrophis gracilis. Hydrus gracilis, Shaw, Zool. iii, p. 560 (1802). Hydrophis gracilis, Giuth. Rept. Brit. Ind. p. 873 (1864) ; Bouleng. Faun. Brit. Ind., Rept. p. 404 (1890); id. Cat. Sn. iii, p. 280 (1896). Head very small; body long, extremely slender anteriorly. Hye at least as long as its distance from the mouth. Rostral as deep as broad; frontal very small, longer than broad, hardly as long as its distance from the rostral; one pre- and one post- ocular; a single anterior temporal; 6 upper labials, third and fourth entering the eye; two pairs of small chin-shields, in contact with each other. 19 to 21 scales round neck, 29 to 33 round thickest part of body; scales smooth, rhomboidal and imbricate anteriorly, elsewhere hexagonal, juxtaposed, each with two cr more tubercles, which are feeble in the female and very strong in the male. Ventrals distinct only anteriorly, very feebly enlarged or split into two posteriorly, 225-297. Bluish black or greyish olive above in the adult, with more or less distinct lighter cross-bands anteriorly. Young with the head and neck black, the latter with light transverse bands; body with rhombic black 192 COLUBRID &. cross-bands continued to the belly or sub-interrupted on the sides; or black with a series of elliptical vertical whitish spots on each side, Total length 1020 millim.; tail 90. From the coast of Persia to the Malay Archipelago. A young specimen was obtained on the Patani Coast by Messrs. Annandale and Robinson and was erroneously referred by me to H.wrayi. The species is recorded from Singapore by Hanitsch (Rep. Raffles Mus. 1897, p. 10). Genus ENHYDRIS. Merrem, Tent. Syst. Amph. p. 140 (1820). Maxillary bone as long as the ectopterygoid, extending forwards as far as the palatine, with two large poison-fangs followed by 2 to 4 small teeth. Nostrils superior ; head-shields large ; nasals in contact with each other; a preocular; loreal present or absent. Body short and stout; scales hexagonal or squarish, juxtaposed ; ventrals very feebly developed, if at all distinct. Two species :— Parietals broken up into small shields ........ E. curtus, p. 192. Parietalem@arce tt... os Surette cen caesar cites E. hardwickii, p. 195. 212. Enhydris curtus. Hydrus curtus, Shaw, Zool. iii, p. 562 (1802). Enhydris curtus, Mery. Tent. p. 140 (1820) ; Bouleng. Faun. Brit. Ind., Rept. p. 396 (1890) ; id. Cat. Sn. iii, p. 300 (1896); Laidlaw, P.Z.S. 1901, ii, p. 580. Hydrophis curta, Giinth. Rept. Brit. Ind. p. 379 (1864); Fayrer, ‘Thanatoph. Ind. pl. xxiv (1874). Rostral broader than deep; parietals broken up into small shields ; one pre- and one or two postoculars ; no loreal; 2 or 3 superposed anterior temporals ; 7 upper Jabials, 1, 2, or 3 entering the eye; chin-shields very small and separated by scales, or quite indistinct. 30 to 38 scales round anterior part of body, 33 to 42 round middle, with a very feebly developed tubercle or short keel; scales on lower surface with a strong spinose tubercle in males, ventrals with two. Ventrals 150-200. Above with dark transverse bands, broadest in the middle; these bands usually very dark, nearly black, rarely rather indistinct (in old specimens); end of tail black. Total length 750 millim.; tail 75. Persian Gulf to Malay Archipelago. Obtained at Singapore by the Skeat Expedition. ENHYDRINA. 193 213. Enhydris hardwickii. Lapemis hardwickiit, Gray, Ill. Ind. Zool. ii, pl. Ixxxvii, fig. 2 (1834). Hydrus pelamidoides, Cantor, Journ, Asiat. Soc. Bengal, xvi, p- 1054 (1847). BAydrophis hardwickit, Giinth. Rept. Brit. Ind. p. 880, pl. xxv, fie. W (1864). Hydrophis loreata, Ginth. 1. c. Enhydris hardwickit, Bouleng, Faun, Brit. Ind., Rept. p. 397 (1890) ; id. Cat. Sn. iii, p. 801 (1896). Very similar to the preceding, but rostral as deep as broad or slightly broader than deep and parietals large and entire; a loreal sometimes present. 25 to 33 scales round anterior part of body, 34 to 37 round middle. Ventrals 130-200. The dark bands often form complete rings round the body. Total length 750 millim.; tail 80. Bay of Bengal to New Guinea. Recorded from the Straits of Malacca, Singapore, and the Patani Coast. Genus ENHYDRINA. Gray, Cat. Sn. p. 47 (1849). Maxillary scarcely longer than the ectopterygoid, not extending forwards quite so far as the palatine, with two large poison-fangs followed by 4 sinall teeth. Nostrils superior; head-shields large, nasals in contact with each other; a preocular, no loreal. Symphysial shield narrow, partly concealed in a deep groove in the chin. Body moderately elongate; scales imbricate; ventrals distinct but very small. A single species. 214. Enhydrina valakadien. Hydrus valakadyn, Boie, Isis, 1827, p. 554. HAlydrus schistosus, Cantor, Journ, Asiat. Soc. Bengal, xvi, p. 1053 (1847). Enhydrina bengalensis, Gray, Cat. Sn. p. 48 (1849); Giinth. Rept. Brit. Ind. p. 381 (1864); Fayrer, Thanatoph. Ind. pl. xviii (1874). Enhydrina valakadyen, Gray, 1.c.; Bouleng. Faun, Brit. Ind. p. 406, fig. (1890); id. Cat. Sn. i, p. 502 (1896). Rostral deeper than broad; frontal smali, longer than broad, shorter than its distance from the end of the snout; one pre-and cne or two postoculars; 7 or 8 upper labials, fourth or third and fourth entering the eye; usually a single anterior temporal ; chin-shields small or indistinct. 40 to 60 scales round anterior part of body, 50 to 70 round middle; scales feebly imbricate, with a small tubercle or short keel, which is stronger in males. Oo 194 COLUBRID ®. Ventrals very feebly enlarged, 230-314. Young olive or grey above, with black transverse bands, broadest in the middle and tapering to a point on the sides; in the adult these bands are usually less distinct, some specimens being uniform dark grey above ; sides and lower parts whitish. Total length 1300 millim.; tail 190. Fig. 58.—Enhydrina valakadien. Persian Gulf to New Guinea. Cantor says, “cs Incredibly numerous in the Bay of Bengal, at Penang and Singapore,’iar more so than any known terrestrial serpent. The fishing-nets are hardly ever worked but one or more are among the contents.” Has also been obtained on the Patani Coast and in the Gulf of Siam. Genus THALASSOPHIS. Schmidt, Abh. Naturw. Hamb. ii, p. 75 (1852). Distinguished from Hydrophis and Enhydiis by the presence of a pair of internasal shields separating the nasal. Coasts of the Malay Peninsuia and Archipelago. One species in the Straits of Malacca. AIPYSURUS. 195 215. Thalassophis annandalii. Distira annandalii, Laidlaw, P. Z.S. 1901, ii, p. 579, pl. xxxv, ieee IL Thalassophis annandali, Bouleng. Fascic. Malay., Zool. i, p. 16 (1903). Head moderate; body short and stout, strongly compressed behind the neck. Rostral broader than deep; nasals small, separated by a pair of large internasals, which widen in front; upper head-shields more or less broken up, the parietals small and separated from each other, and sometimes also from the frontal, by very small scales; frontal and supraocular large ; one or two pre- and one or two postoculars ; eye separated from the labials by one or two suboculars ; temporal scales small, numerous; 9 to 12 upper labials; chin-shields usually broken up into scales. Seales extremely small, 90 to 100 round the middle of the body, juxtaposed ; dorsals with a more or less distinct central tubercle or short keel. Ventrals very feebly enlarged, 310-370. Pale ereyish olive above, white beneath; back with dark cross-bars, narrower than the interspaces, tapering to a point on the sides. Total length 600 millim. ; tail 80. The type specimen of this very remarkable snake was obtained at Patani by the Skeat Expedition. Further specimens have since been tound in the same locality by Messrs. Annandale and Robinson. The water in which the type specimen was taken is stated by Dr. Annandale to have been fresh to the taste. Genus AIPYSURUS. Lacép. Ann. Mus. Paris, iv, p. 197 (1804). Maxillary a little longer than the ectopterygoid, extending for- wards beyond the palatine; poison-fangs moderate, followed by 8 to 10 small teeth. Snout short; nostrils superior ; head- shields large or broken up into scales; nasals in contact with each other. Body moderate ; scales imbricate ; ventrals large, keeled in the middle. Malay Seas and Western Tropical Pacific Ocean. A single species has been found on the coasts of the Malay Peninsula. 216. Aipysurus eydouxii. Tomogaster eydouan, Gray, Cat. Sn. p. 59 (1849). Aipysurus anguilliformis, Giinth. Rept. Brit. Ind. p. 357 (1864) ; Boettg. Zool. Anz. 1892, p. 420. Aipysurus eydouxti, Bouleng. Cat. Sn. iii, p. 804 (1896) ; S. Flower, P, Z. S. 1896, p. 893, and 1899, p. 688. Rostral a little broader than deep ; upper head-shields regular : frontal large, longer than its distance from the end of the snout, o2 196 COLUBRID. as long as or a little longer than the parietals; nasal in contact with or narrowly separated from the preocular; one pre- and two postoculars ; temporals 1 + 2 or 2+ 2; 6 upper labials, fourth entering the eye; anterior chin-shields shorter than the posterior, which are separated by an azygous shield. Scales smooth, in 17 rows. Ventrals 134-142. Dark brown above, with cross-bands of yellow, black-edged scales, often broken up on the vertebral line; these bands widening towards the belly, which is yellow, with or without dark brown spots. Total length 559 millim. ; tail 80. Coasts of Singapore, Java, and the Philippines. Boettger records three specimens from Singapore, and Flower obtained one caught on some flooded land near the Serangoon Road. Another specimen, from Java, was kept alive by Flower for about a month. It was gentle when handled, never attempting to bite. It could move fast, but awkwardly, on dry land, and some- times would crawl out of the water of its own accord. Genus PLATURUS. Daudin, Hist. Rept. vii, p. 225 (1803). Maxillary much shorter than the ectopterygoid, extending for- wards beyond the palatine, with two large poison-fangs ; one or two small teeth near the posterior extremity of the maxillary. Fig. 59.—Head of Platurus laticaudatus. Head shields large ; nostrils lateral, the nasals separated by inter- nasals ; preocular present; no loreal. Body much elongate ; scales smooth and imbricate; ventrals and subcaudals large. Hastern parts of the Indian Ocean and West Pacific. Only one species has been recorded from the Malay Peninsula. i PLATURUS. 197 These snakes approach in many respects the genus Bungarus in the following subfamily. 217. Platurus colubrinus. Hydrus colubrinus, Schneid. Hist. Amph. i, p. 258 (1799). Laticauda scutata (non Laur.), Cantor, Journ. Asiat. Soc. Bengal, xvi, p. 1046 (1847). Platurus scutatus, Giinth. Rept. Brit. Ind. p. 356 (1864). Platurus colubrinus, Bowleng. Faun. Brit. Ind., Rept. p. 395 (1890) ; id. Cat. Sn. i, p. 808 (1896). Rostral deeper than broad; an azygous shield between the pre- frontals and sometimes one or two between the internasals ; frontal as long as or slightly shorter than the parietals; one pre- and two postoculars; temporals 1+2 (rarely 242); 6 or 7 upper labials, third and fourth entering the eye. Scales in 21 to 25 rows. Ventrals not keeled, 195-240 ; subcaudals 30-45. Olive or grey above, yellowish beneath, with black or blackish annuli which are as wide as the interspaces between them or narrower; some or all of the annuli may be interrupted on the belly. Iris black. Total length 1270 millim. ; tail 125. Bay of Bengal to Chinese Sea and Western South Pacific Ocean. Recorded from Penang and Singapore. This snake is not so absolutely aquatic as the other sea-snakes, and has occasionally been found crawling about out of the water. It is not known ever to bite. The allied Platurus laticaudatus, Linn., distinguished by the absence of azygous shields on the suout, will probably be found on the coasts of the Malay Peninsula, as its distribution is nearly the same as that of P. colubrinus. Subfamily ELAPIN A. Synopsis of the Genera. I, Body moderately slender. Mertebral scales enlaraed (2. 5icy ccieeis vee tree et BuNGARUS, p. 198. Vertebral scales not enlarged; neck more or less dilatable, with oblique scales .............. Nata, p. 200. II. Body very slender; scales in 13 rows, verte- brals not enlarged. Poison-gland not extending beyond the head; anal AGS odes yale bevels eager cite sass 07s) oySa'« wyotin CALLOPHIS, p. 203, Poison-gland extending along each side of the an- terior third of the body ; heart shifted hack to second third of body; anal entire............ Do.ioputis, p, 204. 198 COLUBRID®. Genus BUNGARUS. Daud. Hist. Rept. v, p. 263 (1803). Poison-fangs followed by one to four small teeth, Head not or but slightly distinct from neck ; eye small, with round or verti- cally subelliptic pupil; nostril "between two nasals ; no loreal. Seales smooth, oblique, without pits, in 13 to 17 rowel vertebral row enlarged, hexagonal; ventrals rounded. Tail moderate or short ; subcaudals single or in two rows. South-Eastern Asia. Synopsis of the Species. Tail ending very obtusely ; subcaudal shields single ; anterior temporal shield scarcely longer than deepresemes aM MD VEOMS wi wirjerascysen je Sone nee a cnet B. fasciatus, p. 198. Tail tapering to a point ; subcaudal shields single; anterior temporal much longer than deep; scales AGS POWH sin Whew chassis fee wt eee che elaine Role B. candidus, p. 199. Tail tapering to a point; subcaudal shields partly single, partly double; scalesin 13 rows ...... B. flaviceps, p. 200. 218. Bungarus fasciatus. Pseudoboa fasciata, Schneid. Hist. Amph. ii, p. 283 (1801). Bungarus fasciatus, Cantor, Journ. Asiat. Soe. Bengal, xvi, p. 1034 (1847) ; Gunth. Rept. Brit. Ind. p. 343 (1864) ; “Fayrer, Thana- toph. Ind. pl. ix (1874); Bouleng. Faun. Brit. Ind., Rept. p. 388 (1890); id. Cat. Sn. ii, p. 366 (1896) ; S. Fiower, P.Z.S. 1899, p. 689; Wall, Journ. Nat, Hist. Soc. Bombay, XX, p- 933, pl. xv (1911). Rostral much broader than deep ; frontal longer than broad, as long as or longer than its distance from the end of the snout, as long as or a little shorter than the parietals; one pre- and two postoculars ; temporals 1+2, anterior scarcely longer than deep ; 7 upper labials, third and fourth entering the eye. An obtuse keel or ridge along the back and tail; latter ending very obtusely. Scales in 15 rows, vertebrals much enlarged, broader than long. Ventrals 200-234 ; anal entire; subcaudals single, 23-39. Annu- late black and yellow, the black annuli as broad as the yellow or broader; head yellow, with a black band, widened behind, beginning between the eyes and extending to the nape; snout brown. Iris black; tongue flesh-coloured. Total length 1450 millim. ; tail 130. India, Burma, Southern China to Malay Peninsula, Sumatra, ie Java. Generally distributed in the Malay Peninsula, but nowhere © common. According to Flower, this snake is popularly confounded with BUNGARUS. 199 Dipsadomorphus dendrophilus. Laidlaw says (P. Z. 8. 1901, 1, p- 580) the Malay of Biserat call the two by the same name (Ular Katam tabu), but they appear to distinguish them to some extent, regarding the Dipsadomorphus as non-poisonous, or at any rate not so poisonous as the Bungarus. Ridley (Journ. Str. Br. Asiat. Soc. 1899, p. 200) has observed it near the sea, in tidal waters. This species feeds, like the Krait, chiefly on other snakes, although occasionally on mice, lizards, and toads, even on fish. According to Col. Evans (Journ. N. H. Soc. Bombay, xvi, p. 519, 1902), the eggs, 8 in number, are incubated by the mother, who secretes herself in a hole for the purpose. 219. Bungarus candidus. Coluber candidus, Linn. Syst. Nat. i, p. 384 (1766). Pseudoboa cerulea, Schneid. Hist. Amph. ii, p. 284 (1801). Bungarus ceruleus, Daud. Hist. Rept. v, p. 270, pl. ixv, fig. 2 (1808) ; Gunth. Rept. Brit. Ind. p. 345 (1864) ; Fayrer, Thanatoph. Ind. pl. x (1874); Bouleng. Faun. Brit. Ind., Rept. p. 388 (1890). Bungarus semifasciatus, Boie, Isis, 1827, p. 552; Giinth. op. cit. p, S44. Baaras candidus, Cantor, Journ, Asiat. Soc. Bengal, xvi, p. 1054 (1847); Bouleng. Cat. Sn. ii, p. 868 (1896) ; 8. Flower, P. Z. 5. 1899, p. 689. Rostral broader than deep; frontal longer than broad, as long as its distance from the end of the snout, shorter than the parie- tals; one pre- and two postoculars; temporals 1+1 or 142; 7 upper labials, third and fourth entering the eye. Scales in 15 rows, vertebrals much enlarged, broader than long on the hinder half of the body. Ventrals 195-237; anal entire; subcaudals single, 37-56. Dark brown or purplish black above, with narrow white cross-bands or transverse series of small white spots often in pairs ; lower parts white or pale yellow. Iris black. The Malay Archipelago specimens belong to the var. ceruleus, which is regarded as distinct from the typical form (from Java and Celebes) by some authors. Total length 1100 millim.; tail 150. India, Burma, and Southern China to Malay Peninsula and Archipelago. The Krait, as this very deadly snake is called in India, appears to be of very rare occurretice 1n the Malay Peninsula, where it is on record from Penang and Kedah, while the Selangor Museum possesses specimens from near Kuala Lumpur. It bears a decep- tive similarity in form and coloration to the harmless Lycodon aulicus. The poison of this and the preced‘ng species of Bungarus is similar to that of the Cobra, acting chiefly on the central nervous system, death resulting from failure of the respiratory ‘mechanism, probably owing to a direct action of the venom on the respiratory centre in the medulla oblongata. Although the true Krait is small and injects only a comparatively small quantity of 200 COLUBRID®. poison, it is far more deadly than the larger Bungarus or the Cobra, the toxicity being at least four times as great as in the latter. All authorities agree in describing the Krait as a quiet and shy snake, rarely biting except in self-defence or when hurt. Most accidents happen through barefooted people treading on.these peaceful creatures. Yet more mortality is caused in India by the Krait than by any other snake. The food of the Krait consists mainly of other snakes, but lizards, toads, and small mammals are occasionally eaten. The eggs, 6 to 10 in number, are deposited in holes in the ground. 220. Bungarus flaviceps. Reinh. Vidensk. Selsk. Skrift. x, p. 267, pl. iii, fig. 4 (1843) ; Can- tor, Journ. Asiat. Soe. Bengal, xvi, p. 1033 (1847) ; Bouleng. Cat. Sn. iii, p. 871 (1896) ; 8. Flower, P. Z.S. 1896, p. 894. Megerophis flaviceps, Giinth. Rept. Brit. Ind. p. 346 (1864). Rostral broader than deep; frontal as broad as long, or slightly longer than broad, as long as its distance from the end of the snout, shorter than the parietals ; one pre-and two (rarely three) postoculars; temporals 1+ 2; 7 upper labials, third and fourth entering the eye. Scales in 13 rows, vertebrals strongly enlarged. Ventrals 193-237; anal entire; subcaudals 42-54, partly single, partly double. Black above, with or without a yellow vertebral stripe or a series of yellow dots along the vertebral line; head red or yellow; tail, and sometimes posterior part of body, orange-red ; a yellow lateral streak may be present; belly brown, or yellow with the shields edged with brown. Iris and tongue black. Total length 1850 millim.; tail 220. Cochinchina, Tenasserim, Malay Peninsula, Sumatra, Bornes, andJava. Throughout the Federated Malay States, andin Penang and the adjacent parts of the mainland, but of rare occurrence. This snake combines the structure of a Bungarus with the coloration of a Callophis or Adeniophis. Genus NATA. Laurenti, Syn. Rept. p. 90 (1768). Poison-fangs followed by one to three small teeth. Head not or but slightly distinet from neck, which is more or less dilatable fexpanding into a “hood” supported by the anterior ribs); eye moderate, with round pupil; nostril between two nasals and the internasal; no loreal. Scales smooth, oblique, without pits, in 15 to 25 rows (or more on the neck); ventrals rounded. Tail toderate ; subcaudals all or greater part in two rows. Southern Asia and Africa. NAIA. 201 The Cobras are represented by two species in the Malay Peninsula :— 23-29 scales across the neck, 17-21 across the body; ventrals 163-200; no large occipital shields BE feusrR Arr ritl crore richers sre menn sactesh ore coe, ah N. tripudians, p. 201. 19-21 scales across the neck, 15 across the body ; ventrals 215-262; a pair of large occi- pital shields behind the parietals .......... N. bungarus, p. 202. Fig. 60.—Head of Naia bungarus. 221, Naia tripudians.* Merrem, Tent. Syst. Amph. p. 147 (1820); Gunth. Rept. Brit. Ind. p. 338 (1864) ; Fayrer, Thanatoph. Ind. pls. i-vi (1874) ; Bouleng. Faun, Brit. Ind., Rept. p. 391, fig. (1890) ; id. Cat. Sn. iii, p. 380 (1896) ; S. Flower, P. Z. S. 1899, p. 690. Naia sputatria, Boie, Isis, 1827, p. 557. Naia lutescens, Cantor, Journ. Asiat. Soc. Bengal, xvi, p. 1038 (1847). Malay name, Ular tedong sendok. Rostral broader than deep, its upper portion measuring one fourth to one haif its distance from the frontal: internasal in * The Cobra occurring in the Malay Peninsula does not belong to the typical form with a spectacle-like marking on the hood, but to the vars. fasciata, Gray, sputatrix, Boie, and leucodira, Blgr. The present diagnosis applies only to these. 202 COLUBRID, contact with the preocular ; frontal as long as broad or longer than broad, as long as or a little longer than its distance from the rostral ; one pre- and three postoculars ; temporals 2+ 3 or 343; 7 upper labials, third deepest, seventh longest, third and fourth entering the eye. 23 to 29 scales across the neck, 17 to 21 across the body. Ventrals 163-200; anal entire; subcaudals 42-75. Yellowish, olive, dark brown, or black above, with or without a pale or bright yellow U- or O-shaped marking on the hood, sometimes followed by a yellow collar ; sometimes some yellow or orange on the sides of the head and neck; lower surface of head and neck yellowish white, or bright yellow, usually fellowed by a black cross- bar, rest of lower parts dark brown or black; sometimes an azygous black spot under the neck, followed by one, two, or three pairs. Total length 1830 millim. Southern Asia, from Transcaspia to China and the Malay Peninsula and Archipelago. Although generally distributed, the Cobra does not seem to be so numerous in the Malay Peninsula as in India, Burma, and Siam, yet it is common enough in some parts. According to Ridley (Journ. Str. Br. Asiat. Soc. 1899, p. 200), the specimens met with in the south of the Peninsula are nearly always inky black, further north they are brown, while in parts of Upper Perak and the ad- jacent districts of the Patani States, they are turmeric yellow. When annoyed, he adds, the Cobra sits up in the well-known manner, and makes a very curious snorting noise, holding its mouth open in the form of a circle and every now and then spitting its poison at its opponent. It never attempts to bite, but spits with great accuracy, at a distance of eight feet. It is nocturnal, and feeds on small mammals, batrachians and snakes.