THOMAS LINCOLN CASEY LIBRARY 1925 BIOLOGIA CENTRALI-AMERICANA. INSECTA. COLEOPTERA. Vou. IV. Part 7. RHY NCHOPHORA. CURCULIONID&. CURCULIONIN (concluded) ann CALANDRIN &. BY G. C. CHAMPION, F.Z8. 1909-1910. INTRODUCTION ERRATA ET CoRRIGENDA . Subfam. CurcuLionin#& (continued). Group Acamptina » Lrypetina Cossonina . . . Sect. Dryophthorides Pentarthrides . Pseudapotrepides . 39 3) ,, Cossonides . » Rhyncolides Subfam. CaLanpDRIN4. Group Rhynchophorina ,, Sphenophorina , Calandrina , Litosomina . Sipalina . . Sect. Orthognathides Sipalides a? +) CONTENTS. | | APPENDIX TO THE CuRCULIONINE. Hylobiina . Anchonina . Cleonina Ceratopina . Erirrhina Gymuetrina Anthonomina . Tychiina Otidocephalina Cholina . Cryptorrhynchina Zygopina Tachygonina Barina . Cossonina . INDEX . PLATES. Page 178 181 181 182 183 185 185 190 194: 194: 198 207 210 . 210 211 213 INTRODUCTION. Tuis Volume contains the enumeration of the rest of the species of the subfamily Curculionine (under which the Cossonids are here placed) and the whole of the subfamily Calandrine. The Appendix to the Curculionine was required to include such species as had been overlooked or wrongly placed in the general sorting of the collections, or that had come to hand too late to be inserted in their proper places, one holarctic group, the Gymnetrina, being thus added to the Mexican fauna. The preceding Volume of this series, Coleoptera, IV. part 6, is devoted to the families Brenthide, Scolytide, and Anthribide, and the general sequence of the arrangement of the Rhynchophora has thus been interrupted: species included in the present Volume, ‘“ Coleoptera, IV. part 7,” should of course follow those enumerated in “ Coleoptera, IV. part 5.” The subfamily Calandrine is represented within our limits by a large number of species, some of them (Cactophagus, Phyllerythrurus, Eucactophagus, Metamasius, Rhodobenus, &c.) being very conspicuous brilliantly-coloured insects. Sphenophorus, sensu stricto, includes many destructive North-American species, but it is poorly represented south of Mexico. It is probable that some of the Eastern genera of this subfamily named by Chevrolat and others will prove to be inseparable from Metamasius; but no attempt has been here made to identify them. Calandra granaria, C. oryze, &c. are carried about everywhere by commerce, and other species are often introduced in imported plants. The larger exotic forms attack palms, Cactaceze, Amaryllide, Liliacee, Musacee, maize, &c. BIOL. CENTR.-AMER., Coleopt., Vol. IV. Pt. 7, October 1910. b vi INTRODUCTION. Remarks on the three remaining groups of the subfamily Curculionine, the Acamptina, Trypetina, and Cossonina, will be found in their respective places in the following pages. The material belonging to the U.S. National Museum, the Royal Museum at Dresden, and Signor A. Solari, of Genoa, has been examined, and we are again indebted to the last-named gentleman for various species not represented in our collection. ‘The types of the Mexican and Central-American species described by Gyllenhal, Boheman, Fahreus, and Chevrolat have been kindly communicated by Dr. Sjéstedt for examination, these being supplemented by a few others in the Sommer Collection lent by Mr. O. E. Janson. Prof. F. H. Chittenden, too, has sent us co-types of nearly all the North-American Sphenophori described by himself for comparison with the Mexican forms. Altogether 344 species are enumerated in the present volume (193 of which belong to Curculionine—bringing the total for this subfamily to 2466—and 151 to Calandrine), with seventeen new genera. The nine coloured or partly coloured Plates have been drawn and lithographed, as before, by Mr. E. Wilson, of Cambridge. G. C..G, October 1910. ERRATA ET CORRIGENDA. Page Line 58 8 For “The C. parvicollis” read C. parvicollis, 80 16 for Brazil?°+ read Brazil? *. 80 17,18 ‘The remarks as to ‘the introduced example found at Boston” refer to R. noxius and not to D. germari as stated. 102 23 For Matamasius read Metamasius. BIOLOGIA CENTRALI-AMERICANA. ZOOLOGIA. Class INSECTA. Order COLEOPTERA. Tribe RHYNCHOPHORA. Fam. CURCULIONIDA. Subfam. CURCULIONINZ (continued) * t. Group ACAMPTINA. Cryptorhynchini, Group II. Acampti, Leconte. To this group Leconte and Horn referred a single N.-American genus, Acamptus, at the same time calling attention to its relationship with the Byrsopides and Cossonides. ‘The new genera now added from within our limits, particularly Cheror- rhynchus, show such a decided affinity with various members of the last-mentioned group that they seem to me to be best placed near the Cossonina and Trypetina. The “ Acamptina” have the rostrum stout and deflexed, its basal portion received in a deep groove in the prosternum and its apex resting on the narrowly separated anterior coxe ; the prothorax projecting over the head anteriorly ; the third tarsal joint simple ; the funiculus 5-, 6-, or 7-jointed; and the body more or less setose and lutose. The four genera may be separated thus {:— Funiculus 5-jointed ; antennal club with the basal joint shining and very sparsely pilose; tarsirather stout. ©. 2. 6 1 6 1 + ee es ACAMPTOPSIS. Funiculus 6-jointed ; antennal club with the basal joint shining and very sparsely pilose; tarsi rather stout. . . 2 ee + ee ee es PsEUDACAMPTUS. * By G. C. Cuampion. + In a preceding volume of this subject a recorded Central-American Hylobiid was omitted, viz. Ischiomastus marginatus Faust (Stett. ent. Zeit. 1893, p. 10), from Costa Rica and Colombia. This insect, the 9 type of which I have seen, is certainly congeneric with Liwomorpha albomarginata, Champ. (B. C.-A., Coleopt. iv. 4, pp. 63, 719), also from Costa Rica, and, like it, differs from typical [schiomastus (plinthoides, Kirsch, torulosus, Faust, &c.) in having the mentum and anterior coxe unarmed in the ¢. Jnxomorpha (1902) must be sunk as a synonym of Ischiomastus, Kirsch (1889). + Paracamptus, Casey, and Acamptoides, Ch., have a complete rostral canal, a bilobed, pubescent third tarsal joint, &c., and they do not belong to this group. BIOL. CENTR.-AMER., Coleopt., Vol. IV. Pt. 7, October 1909. BB 2 RHYNCHOPHORA. Funiculus 7-jointed. Antennal club with the basal joint shining and very sparsely pilose ; tarsi rather stout ©. 6. ee ee ee ee eee ee. LAcAMp rus. ] Antenual club closely pubescent, larger; tarsi slender. . . . . . . CHa@RorRuYNCHUs. ACAMPTOPSIS, gen. nov. Head deeply inserted into the prothorax ; eyes inferiorly placed, large, hidden in repose; rostrum deflexed, short, very stout, feebly curved, the tip resting on the anterior coxe, the scrobes deep and oblique, the antenne inserted at the middle, the funiculus 5-jointed, the club small, ovate, with the basal joint shining and the others very short and densely pubescent ; prothorax subtubulate and cucullate in front, feebly bisinuate at the base, and emarginate at the apex beneath; scutellum prominent, small ; elytra much wider than the prothorax, oblong-subtriangular, feebly sinuate at the base, abruptly produced at the apex ; prosternum broadly and deeply sulcate from the apex to the narrowly separated anterior coxe ; ventral segments 3 and 4 short, together a little shorter than 5; legs short and stout; tibie strongly unguiculate at the outer apical angle; tarsi with the third joint simple, the claws divergent ; body oblong, densely lutose, and also set with short clubbed sete. Type, A. encaustus. The 5-jointed funiculus, the somewhat curved rostrum, and the relatively shorter third and fourth ventral segments distinguish this genus from the following, Pseuda- camptus, ‘The type is from Panama, and a second species is found in Cuba*, The sculpture in both of them is in great part hidden by the dense earthy incrustation. 1. Acamptopsis encaustus, sp. n. (Tab. I. figg. 1, 1 a-c.) Oblong, somewhat flattened above, nigro-piceous, the antenne and tarsi ferruginous; densely coated with a brown earthy incrustation, and also sparsely set with short, rather stout, clubbed, suberect sete (which extend to the rostrum, antennal scape, and legs), those on the elytra uniseriately arranged along each interstice, the last joint of the funiculus also with several very long projecting sete. Head, rostrum, and prothorax densely, finely punctate, the prothorax with a well-marked subapical constriction. Elytra seriate-punctate, the interstices somewhat raised and densely punctulate. Length 23, breadth 1, millim. (9 ?) Hab. Panama, Volcan de Chiriqui 3000 feet (Champion). One specimen. Smaller and less robust than Pseudacamptus plurisetosus, the sete not so stout, &c. * Acamptopsis cubanus, sp. n.—Oblong, nigro-piceous, the tips of the tarsi ferruginous; covered with a brown earthy incrustation, and also sparsely set with short clubbed sete, those on the elytra uniseriately arranged along each interstice. Rostrum very stout, rugose, about as long as the posterior portion of the prothorax as seen in profile. Prothorax as long as broad, abruptly constricted towards the apex, the posterior portion rounded at the sides, the tubulate apical portion also rounded in front as seen from above; densely punctate. Elytra moderately long, gradually narrowed from the base; seriate-punctate, the interstices somewhat raised. Beneath alutaceous, rather sparsely punctate ; first ventral segment somewhat concave. Tibie broad, each with a long apical uncus, which is widened towards the base. Length 3, breadth 14 millim. (<¢.) ' Hab. Cusa, Cayamas (Schwarz, in U.S. Nat. Mus.). One specimen. A little more oblong than -A. encaustus, the rostrum longer, the prothorax rounded at the sides and strongly constricted towards the apex, the elytra less widened at the base. PSEUDACAMPTUS.—CH@RORRH YNCHUS. 3 PSEUDACAMPTUS, gen. nov. Head deeply inserted into the prothorax, large; the eyes inferiorly placed, hidden in repose; rostrum deflexed, the tip resting on the anterior cox, very stout, short, parallel-sided, nearly straight, with deep, oblique scrobes, the antenne inserted at about the middle, the funiculus 6-jointed, the club abrupt, small, ovate, with a shining, subglabrous basal joint and the other joints very short and densely pubescent; prothorax subtubulate and cucullate in front, feebly sinuate at the base, and deeply emarginate at the apex beneath; scutellum small, oblong-subquadrate, flat; elytra much wider than the prothorax, subtriangular, sinuate at the base, their apices strongly declivous and abruptly produced ; ventral segments 3 and 4 short, together about as long as 5; prosternum broadly and deeply excavate from the apex to the narrowly separated anterior coxe; legs stout; tibie sinuous within, strongly unguiculate at the outer apical angle and mucronate at the inner angle; tarsi sparsely pilose beneath, the third joint simple, the claws divergent and widely separated; body oblong, densely lutose and also thickly set with stout clubbed sete. Type, P. plurisetosus. The Mexican insect from which the above characters are taken is nearly related to the N.-American genus Acamptus, Lec., but the funiculus is 6-jointed *, the elytra are more sinuate along the basal margin and have more prominent humeri, and the clubbed setz extend along each interstice. The sculpture is almost entirely hidden by the vestiture. 1. Pseudacamptus plurisetosus, sp.n. (Tab. I. figg. 2, 2 a-c.) Oblong, somewhat flattened above, opaque, alutaceous, nigro-piceous, the antenne ferruginous; densely incrustate with brown scales and also thickly set with short, stout, erect, clubbed sete (which extend to the legs, rostrum, and antennal scape), those on the elytra uniseriately arranged down each interstice, the last joint of the funiculus also with several long projecting sete. Head and rostrum densely, finely punctate. Prothorax about as long as broad, slightly rounded at the sides from the well-marked subapical constriction to the base, the tubulate portion nearly half the length of the posterior portion ; closely punctate. Elytra moderately long, seriate-punctate, the interstices feebly convex, 3 and 5, and | (sutural) towards the apex, distinctly raised. Beneath sparsely punctate. Length 32, breadth 13 millim. Hab. Mexico, “Sierra de Durango” (ea coll. Flohr). One specimen, probably from the State of Vera Cruz. The sete in this species are much stouter than in Acamptus rigidus (for an example of which we are indebted to Mr. Wickham), and those on the elytra are not confined to the alternate interstices, as in A. rigidus and A. echinus. CHGRORRHYNCHUS, gen. nov. Head deeply inserted into the prothorax, large; eyes inferiorly placed, almost hidden in repose; rostrum deflexed, the tip resting on the anterior coxe, very short, stout, and parallel-sided, feebly curved, somewhat depressed at the base, the scrobes deep and obliquely descending, the antenna inserted slightly beyond the middle, the funiculus 7-jointed, joints 3-7 strongly transverse, widening outwards, the club rather large, ovate, and closely pubescent, its basal joint shorter than the others united; prothorax subtubulate and cucullate in front, feebly sinuate at the base, and deeply emarginate at the apex beneath; * Acamptus rigidus, Lec., has the funiculus 7- {not 6-, as stated by its describer) jointed, a fact already pointed out by Casey (Ann. N. York Acad. Sci. vi. p. 446), BB 2 4 RHYNCHOPHORA. scutellum small, subtriangular, flat; elytra elongate-subtriangular, subtruncate at the base, much wider than the prothorax, their apices strongly declivous and produced; prosternum broadly and very deeply sulcate from the apex to the narrowly separated anterior coxe; ventral segments 3 and 4 extremely short, together very little more than half the length of 5; legs short, the femora and tibis stout, the tibie almost straight, strongly unguiculate at the outer apical angle, and toothed at the inner angle ; tarsi with a few hairs beneath, slender, the third joint slightly excavate above for the reception of the base of the fourth, scarcely wider than the second, the claws divergent; body elongate, opaque, setose, the depressions of the surface lutose. Type, C. tenuatarsis. This genus is easily separable from its allies by the very slender, short tarsi; the 7-jointed funiculus; the large, ovate, closely pubescent antennal club, with a com- paratively short basal joint; the basally depressed rostrum; the very deep, almost glabrous prosternal sulcus ; the extremely short third and fourth ventral segments ; and the opaque, alutaceous, finely setose surface of the body. ‘The type bears a certain resemblance to the European Cherorrhinus squalidus, Fairm. 1. Cherorrhynchus tenuitarsis, sp. n. (Tab. I. figg. 3, 3 a-c.) Elongate, rather narrow, somewhat flattened above, opaque, alutaceous, nigro-piceous, the antenne obscure ferruginous ; sparsely clothed with fine, erect, pallid, blunt sete, those on the elytra uniseriately arranged along each interstice, the depressions of the surface filled with a brownish incrustation. Head and rostrum densely, finely punctate. Prothorax about as long as broad, slightly rounded at the sides, the subtubulate anterior portion narrower; closely punctate. Elytra long, obliquely narrowing from the base, blunt at the apex as seen from above; seriate-punctate, the interstices feebly convex, flatter on the disc. Beneath sparsely punctate. Length 33, breadth 14 millim. Hab. Panama, Volcan de Chiriqui 3000 feet (Champion). One specimen, sex not ascertained. Group TRYPETINA. Trypetides, Lacordaire ; Trypetini, Leconte and Horn. Of the three genera referred to the Trypetina by Lacordaire, one, Vanus, Schénh. (= Homaloxenus, Woll.), is represented within our limits. This group is placed by him near the “ Antliarhinides,” and by Leconte and Horn near their “ Derelomini.” It seems to me that its proper position ought to be near the Cossonina—Wollaston, in fact, included Homaloxenus * with some doubt amongst them, at the same time calling attention to the distinctly annulated antennal club, the strongly bilobed tarsi, the dentate femora f, the feebly unguiculate tibie, &c., as not being in accordance with the usual modifications of the Cossonid type. Hoplorrhinus, Chevr. [provisionally placed under a separate group, Hoplorrhinina, in a preceding volume of this series, Coleopt. 1V. pt. 4, pp. 277-279 (1903)], the * His description is based on the male only. tT Some true Cossonids from New Zealand have strongly dentate femora. TRYPETINA.—NANUS. 5 contiguous anterior coxe notwithstanding, would perhaps be better included under the Trypetina, a nearly allied genus (Hoplorrhinoides) with the anterior coxe as widely separated as in Nanus being now known, all these insects having the rostrum somewhat similarly formed and differing greatly in the two sexes. Hoplorrhinus* and Hoplorrhinoides include various subopaque elongate forms, which not only resemble Derelomus in colour and sculpture, but are of similar habits, species of each of these three genera being found upon the male-flowers of palms. Nesoticus, Perkins, from the Hawaiian Is., an insect living in the wood of Cheirodendron (order Araliacez), and Spheracus, Faust, from Brazil, referred to the Cossonina and Cholina respectively by their describers, seem also to belong here. NANUS. Nanus, Schénherr, Gen. Cure. viii. 1, p. 89 (1844) ; Lacordaire, Gen. Col. vu. p. 179 ; Leconte and Horn, Class. Col. N. Am. 2nd edit. p. 484 (1883). Homaloxenus, Wollaston, Trans. Ent. Soc. Lond. 18738, pp. 436, 470, 552 (3) ; Leconte, Proc. Am. Phil. Soc. xv. p. 338 (1876). The sexual characters are so marked in this genus that, as Lacordaire states, the males and females might be taken as belonging to different genera: in the former sex the rostrum is long, almost straight, and opaque, and the antenne are inserted near the tip, and in the female the rostrum is short, slender, curved, and almost smooth, and the antenne are inserted at its middle. Two species inhabit Central America, 1. Nanus uniformis. (Tab. I. figg. 4,44, 6; 5, 2.) Nanus uniformis, Boh. in Schénh. Gen. Cure. viii. 1, p. 90 (3 2 )*; Lec. & Horn, Class. Col. N. Am. 2nd edit. p. 484°. Homaloxenus dentipes, Woll. Trans. Ent. Soc. Lond. 1878, p. 615 (¢)*; Lec. Proc. Am. Phil. Soc. xv. p. 338 (1876) (2) °. Hab. Nortu America, Florida 24.—Mexico, Tlacotalpam near Vera Cruz (Hoége).— ANTILLES, Cuba 1, Puerto Rico 1, San Domingo ®. Sent us in numbers from Vera Cruz, these specimens agreeing with others before me from the above-quoted Antillean localities. The elytra often have a black patch on the disc beyond the middle. The femora are dentate in the male and almost unarmed in the female. WV. wniformis is described as glabrous, but the types must have been abraded. The Colombian WV. punctellus, Boh., is said to be clothed with whitish pubescence and to have the disc of the prothorax flat. * Specimens of H. crispus, from Cacao, Trece Aguas, Alta Vera Paz, Guatemala (Schwarz and Barber), have recently been sent to me for determination by the U.S. Nat. Museum. The two examples described by me were both of the female sex (not ¢ and @ as stated): the male (as is that of H. meaicanus) has a straighter, stouter, carinate, rugosely punctate rostrum, the antenne inserted towards the tip, and the metasternum and first ventral segment broadly excavate. 6 RHYNCHOPHORA. 2, Nanus hispidus, sp.n. (Tab. I. figg. 6, 6a, ¢; 7, 2.) Elongate, depressed, moderately shining, the rostrum opaque in the ¢, black or piceous, the shoulders or basal portion of the elytra, antenne, tarsi, and base of the femora more or less rufescent ; very finely and sparsely pubescent, the prothorax and elytra also somewhat thickly clothed with decumbent, ochreous sete, those on the elytra uniseriately arranged down each interstice, the under surface with an extremely fine sericeous pubescence. Head densely, minutely punctate ; rostrum (¢ ) usually as long as or longer than the head and prothorax, almost straight, parallel-sided to near the tip, and densely strigoso-punctate, (9) slender, arcuate, not longer than the prothorax, shining, and almost smooth. Prothorax broader than long, somewhat rounded at the sides, abruptly constricted in front, broadly depressed down the middle of the disc ; densely, shallowly punctate, the narrow interspaces alutaceous. Elytra elongate, much wider than the prothorax, punctate-striate, the interstices feebly convex, densely, minutely punctate, and each with a row of larger, asperate, setigerous impressions. Beneath very densely, minutely punctate. Metasternum deeply sulcate down the middle for the apical two-thirds of its length. Legs elongate ; femora in both sexes strongly clavate and very sharply dentate. Length 3-42, breadth 1-1? millim. (¢ 9.) Hab. Panama, Bugaba, Tolé (Champion). Numerous examples, males predominating, the latter varying greatly in size and in the length of the rostrum. Immature examples are entirely ferruginous. ‘This species is separable at once from N. uniforms by its setose elytra. HOPLORRHINOIDES, gen. nov. Rostrum elongate, slender, widened at the tip, dissimilarly formed in the two sexes—( 3) feebly curved, flattened, punctured, and carinate, (@) shorter, much more slender, and almost smooth,—the scrobes lateral, broad and deep in the ¢, reaching the eyes, the antenne inserted at or beyond the middle in ¢ and at about the basal third or fourth in 2 ; eyes very large, lateral, coarsely facetted; mandibles prominent, curved, sharply dentate within ; antenne slender, the funiculus 7-jointed, the joints obconic and decreasing in length, the club pointed, annulate, and with a long, shining, conical basal joint ; prothorax suboval, truncate and sinuately margined at the base; scutellum flattened, moderately large ; elytra elongate, not or very slightly wider than the prothorax, produced at the tip; anterior and inter- mediate coxe exserted, each separated by at least one-half their own width; first ventral suture sinuate, the others straight; legs elongate; femora clavate and towards the apex sharply dentate, the anterior pair stout at the base; tibiee rounded and unarmed at the outer apical angle; tarsi pilose beneath, the third joint strongly bilobed, the anterior pair dilated and with long projecting hairs in the ¢, the claws long and divergent; body elongate, subcylindrical, coriaceous, very finely pubescent, testaceous. Type, H. attalee. The two immature-looking insects belonging to this genus are nearly related to Hoplorrhinus, from which they differ in their somewhat widely separated anterior and intermediate coxe, the more feebly pedunculate femora, and the deep, laterally-placed rostral scrobes of the male, the anterior tarsi, too, being dilated and very hairy in this sex. Sphwracus, Faust, from Brazil, seems to approach Hoplorrhinoides in many of its characters. 1. Hoplorrhinoides attalez, sp.n. (Tab. I. figg. 8, 8a, ¢ ; 9, 2.) Elongate, opaque, pale testaceous, the eyes black, the rostrum piceous or ferruginous, the anterior knees and scutellum black in one specimen; the pubescence sparse, pallid, and inconspicuous. Head shallowly foveate between the eyes; rostrum (¢) a little longer than the head and protborax, flattened, with the HOPLORRHINOIDES.—COSSONINA. 7 basal portion multicarinate, the apical portion closely punctured, and the antenne inserted at about the’ middle (in the second specimen shorter, with an undulate ridge on each side, a fine carina down the middle, and the antenne inserted nearer the tip), ( 9 ) slender, arcuate, smooth from near the base, and the antennz inserted at about the basal third, joints 1 and 2 of the funiculus elongate in both sexes, 3-5 decreasing in length. Prothorax somewhat conical and about as long as broad in the ¢, a little shorter and more rounded atthe sides in the 2, closely, minutely, or subobsoletely punctate. Elytra finely punctate-striate, the interstices feebly convex or flat, subgranulate in one specimen. Beneath sparsely, obsoletely punctate. Anterior tarsi of the g dilated and clothed with long, laterally projecting, pallid hairs. Length 7-8, breadth 24-23 millim. (d Q.) Hab. Guatemata, Cacao, 800 feet, near Trece Aguas, in Alta Vera Paz (Schwarz and Barber, in U.S. Nat. Mus.). Two males and two females, the former varying in the length and sculpture of the rostrum, and in the point of insertion of the antenne. The sculpture of the prothorax and elytra varies also in the different specimens of each sex ; but as all four are labelled as having been found on the male-flowers of Attalea cohune (the large palm of the region), and the general coloration is similar to that of Derelomus (species of which are known to attack Chamerops), this cannot be altogether due to immaturity. 2. Hoplorrhinoides pallidus, sp. n. 2. Very like the same sex of H. attalec, but with the rostrum straighter and considerably longer than the head and prothorax, striato-punctate at the base; joint 2 of the funiculus much shorter than 1; the pro- thorax strongly transverse, rapidly narrowing from the middle forwards, shining, densely, minutely punctate; the elytra obsoletely punctate-striate, the interstices Hat and coriaceous. Length 64, breadth 24 millim. Hab. Panama, Volcan de Chiriqui (Champion). One immature specimen, set aside years ago for want of further material. It pro- bably lives upon the male-flowers of a different palm from that attacked by /. attalee, Attalea cohune being absent, I believe, from the Pacific slope of Chiriqui. Group COSSONINA. The Cossonids are usually treated either as a separate Family of the Rhynchophora or as a subfamily of the Calandride, but they seem to be best placed under the Curculionine, the group “Acamptina” connecting them to a certain extent with the Cryptorrhynchina. Wollaston’s arrangement (1873) is here followed, except that the Scolytiform Rhyncolides are dismembered from the Cossonides (following Leconte and Horn), and that certain Trypetid and Hylobiid genera are altogether excluded. The typical forms are mainly recognizable, apart from their general facies, by the claw-like prolongation of the outer apical angle of the tibie (this being concave within in various highly developed genera, such as Lhopalomesites, &c.), and the feebly emarginate or simple third tarsal joint; but these characters are not always diagnostic, the tibie sometimes being unarmed at the apex and the third tarsal joint bilobed. The Cossonina 8 RHYNCHOPHORA. are particularly well represented in such Oceanic islands as St. Helena, Madeira, the Canaries, the Hawaiian group, New Zealand, &c., and some of them are recorded as having been carried immense distances across the ocean in floating drift-wood. Sect. DRYOPHTHORIDES. Dryophthorides, Lacordaire, Wollaston. The species of this section are easily identified by their 4-jointed funiculus, the 5-jointed tarsi, the strongly unguiculate tibie, and the peculiar silky pruinosity of the surface of the body. DRYOPHTHORWUWS. Dryophthorus, Schonherr, Curc. Disp. Meth. p. 332 (1826); Gen. Cure. iv. p. 1088; Lacordaire, Gen. Col. vii. p. 322; Wollaston, Trans. Ent. Soc. Lond. 1873, pp. 434, 442, 506. A very widely distributed genus and particularly numerous in species in the northern Pacific islands *, no less than seventeen being recorded by Mr. Perkins from the Hawaiian group. The holarctic D. corticalis, Payk. (lymeaylon, F., americanus, Bed.), is said to attack oak and alder. 1. Dryophthorus quadricollis, sp. n. (Tab. I. fig. 10.) Moderately elongate, opaque, black, the scape of the antenue and the tarsi ferruginous, the surface with a greyish sericeous pruinosity. Head closely punctate; eyes transverse, small, depressed, coarsely facetted ; rostrum very stout, moderately long, slightly dilated opposite the points of insertion of the antenne, closely punctate, smooth, bare, and shining at the tip, the antenn# inserted towards the base. Prothorax as long as broad, subquadrate, abruptly constricted in front; closely punctate. Elytra comparatively short, widening to about the basal third and narrowed thence to the apex, which is some- what produced; coarsely seriate-punctate, the interstices raised, about as wide as the punctures on the disc and becoming narrower towards the sides. Length 24-25, breadth 1 millim. ( @ ?) Hab. GuateMaa, Totonicapam 8500-10,500 feet (Champion). * Dryophthorus cocosensis, sp. n.—Oblong-ovate, opaque, nigro-piceous or piceous, the antennal club ferruginous ; the surface (when cleaned) clothed with a very fine greyish pruinosity, and the elytral interstices each with a row of extremely minute scales. Head and rostrum densely, rugosely punctate ; rostrum stout, parallel-sided, slightly constricted at the base; antennal scape widened from near the base ; eyes large and depressed. Prothorax about as long as broad, strongly constricted in front, coarsely, densely punctate. Klytra much wider than the prothorax, rounded-subtriangular; coarsely seriate- punctate, the interstices raised and much narrower than the punctures. Tarsi very short. Length 14-21, breadth 4-1 millim. Hab. Cocos I. Sent in abundance (with a species of Anchonus) by the late P. Biolley, the specimens labelled as having been found in January 1902. This island belongs politically to Costa Rica, but it is situated so far from the Pacific coast that the locality has not been included within the limits of this work. The species may be known by its comparatively short, subtriangular elytra, with narrow raised interstices, the short tarsi, and the broad scape of the antenne. DRYOPHTHORUS.—STENOMMATUS, 9 Six examples. Less elongate than D. corticalis, Payk., the rostrum with a rather larger bare shining space at the tip, the prothorax subquadrate, the elytra shorter, more dilated at the sides below the base and more narrowed and attenuate at the tip. When cleaned, the surface is so strongly pruinose as to appear plumbeous or greyish. STENOMMATUS. Sfenommatus, Wollaston, Trans. Ent. Soc. Lond. 1873, pp. 484, 442, 506, 595. The only tangible characters by which Stenommatus can be distinguished from Dryophthorus appear to be the comparatively slender, curved rostrum and the narrower eyes. ‘The supposed difference in the form of the vestiture is due to the mud-like incrustation on the specimens of Dryophthorus examined by Wollaston. 1. Stenommatus fryi. Stenommatus fryi, Woll. Trans. Ent. Soc. Lond. 1873, p. 595°. Hab. Mexico (coll. Fry"). The unique type of this species appears to be a female. 2. Stenommatus sulcifrons, sp.n. (ab. I. fig. 11.) Moderately elongate, narrow, depressed, opaque, nigro-piceous, the antenne (the club excepted), tip of the rostrum, eyes, and tarsi ferruginous, the femora and tibise piceous, the surface with a greyish pruinosity, the punctures each bearing a minute metallic scale. Head closely punctate, shallowly sulcate between the eyes; eyes somewhat prominent, strongly transverse, moderately large, coarsely facetted, separated above by about the width of the apex of the rostrum; rostrum rather slender, moderately long, abruptly dilated opposite the points of insertion of the antenne, closely punctate, the outer half of the apical portion smooth, shining, and bare, the basal portion sulcate, the antenne inserted at the middle and with -an elongate scape. Prothorax narrow, about as long as broad, subquadrate, strongly constricted in front, closely punctate. Elytra moderately long, somewhat oval, conjointly, subtriangularly produced at the apex; coarsely seriate-punctate, the interstices raised. Legs short, rather slender. Length 24, breadth # millim. (d.) Hab. Panama, Volcan de Chiriqui 4000 feet (Champion). One specimen. Narrower than the Mexican 8. fry; the rostrum sulcate down the basal half, narrower at the tip, the smooth apical space less extended, and the pterygia very prominent ; the eyes somewhat prominent and more approximate above. Sect. PENTARTHRIDES. Pentarthrides, Wollaston. The 5-jointed funiculus is the essential character of Pentarthrum and the other genera of this section; Zomolips, Woll. (= Wollastonia, Horn*), however, has a similar number of antennal joints, but, as Wollaston says, it is so obviously related * This name is preoccupied for a fossil beetle described by Heer. BIOL. CENTR.-AMER., Coleopt., Vol. LV. Pt. 7, October 1909. CC 10 RHYNCHOPHORA. to Hexarthrum that it must be placed near it. Dryotribus mimeticus, Horn (=Tha- lattodora insignis, Perkins), from Key West, Florida, &c., has been introduced into the Hawaiian Is., and it occurs also in Mustique Island, one of the Grenadines. This insect somewhat resembles Dryophthorus and Cherorrhinus, but has the eyes placed on the rostrum, as in Dioptrophorus, Ithaura, and Theognete, genera placed near Anchonus in this work*. In all the Pentarthrides the metathoracic episterna are almost or quite covered by the inflexed margin of the elytra, as in Dryophthorus. PENTARTHRUM. Pentarthrum, Wollaston, Ann. Nat. Hist. (2) xiv. p. 129 (1854) ; Trans. Ent. Soc. Lond. (2) v. p. 897 (1861); ibid. 1873, pp. 434, 446, 5138, 598; Lacordaire, Gen. Col. vil. p. 324. A widely distributed genus, the type of which is the European P. huttoni, Woll. The only Central-American species that can be satisfactorily referred to it is P. cylin- dricum, Woll., originally described from introduced examples found in the Island of Ascension. In this latter insect the anterior cox are more approximate, and the tarsi more slender than in P. huttoni. Pentarthrum appears to be especially well represented in New Zealand, but some of the forms from that country will certainly have to be eliminated. 1. Pentarthrum cylindricum. (Tab. I. fig 12.) Pentarthrum cylindricum, Woll. Trans. Ent. Soc. Lond. (2) v. p. 398, t. 19. figg. 5, 5a’; ibid. 1873, p. 653°; Champ. Ent. Monthly Mag. xlv. p. 104°. Hab. Wonpuras? (Sallé); Nicaragua ?, Chontales (Janson); Panama, Tolé? (Cham- pion).—BRaziL?, Rio Janeiro ? (codl. Fry). Wollaston! states that the specimens of this species found by Mr. Bewicke in the decayed wood at the bottom of some boxes, possibly used to import plants, in Ascension, might have come from the Cape of Good Hope or Mauritius; later’, he adds, ‘ Brazil” and “ Malay Is.” as localities. There can be no doubt, however, that the home of this insect is in Tropical America. Three examples only have been received from within our limits, one of which is shown on our Plate, Wollaston’s figure being too elongate. RHINANISUS. Rhinanisus, Broun, New Zealand Journ. Sci. i. p. 489 (1883). Various small, elongate, depressed Central- and $.-American forms, with the rostrum rather long, slender, and widened outwards (especially in the male), the eyes depressed, the basal portion of the head globose and abruptly separated from the anterior portion, the elytra pilose or setose at the apex, and the anterior cox narrowly separated, agree * Cf. Col. iv. 4, pp. 92-97. RHINANISUS. 11 sufficiently with the species of Rhinanisus (type, Pentarthrum fulvicorne, Broun), from New Zealand, to be included in the same genus. ‘The tarsi are comparatively stout in &. pilicauda. The American forms may be tabulated thus: — a. Tarsi with the 3rd joint comparatively broad, distinctly emarginate; the basal joints rather narrow. a‘. Rostrum considerably widened towards the tip in the ¢ ; eyes rather large: species larger and more robust Loe . hirtipennis. b'. Rostrum very feebly widened towards the tip in both sexes: species smaller and narrower. a®, Elytra very elongate and depressed; eyes small. a’. Rostrum relatively stouter; ventral segments 1 and 2 broadly sulcate inthe... ee. ventralis. bo’. Rostrum more slender; elytra flatter. . . . . . + + + « + ~ planatus. b°. Elytra shorter and less depressed. a‘. Body piceous ; elytral interstices very feebly convex; eyes larger. . tenuiculus. b'. Body ferruginous; elytral interstices flat; eyes smaller . 2 . . . [ peruanus *, | b. Tarsi shorter, with the 3rd joint very little wider than the first and second, these latter comparatively stout; elytra as in R. tenuiculus ; eyes rather large. pilicauda. 1. Rhinanisus hirtipennis, sp. n. (Jab. I. fig. 13, ¢.) Elongate, narrow, depressed, moderately shining, finely alutaceous, fusco-castaneous, the eyes, the space between them, and the under surface blackish; clothed with a very fine scattered pubescence, the elytra with longer, semierect, pallid, setiform hairs at the apex. Head (the globose basal portion excepted) somewhat coarsely punctate; eyes rather large; rostrum nearly as long as the posterior portion of the prothorax, slender and sparsely punctured in the 2, a little shorter, stouter, considerably widened towards the tip, and more closely punctured in the d, the antenne inserted at about the basal third ( 3) or fourth (¢), the scape reaching the posterior limit of the eyes. Prothorax a little longer than broad, abruptly constricted in front, somewhat rounded at the sides and gradually narrowing from the middle forwards, closely punctate. Scutellum small, transverse. Elytra elongate, flattened, slightly wider than the prothorax, subparallel in their basal two-thirds ; closely punctate-striate, the interstices narrow and feebly uniseriate-punctate, the punctures becoming more conspicuous on the apical declivity. Beneath closely, finely punctate ; ventral segments 1 and 2 suleate down the middle in the d. Tarsi rather stout. Length 34, breadth ;% millim. (¢ 2.) * Rhinanisus peruanus, sp. n.—Elongate, narrow, depressed, faintly alutaceous, shining, ferruginous, the eyes black, the elytra with numerous erect pallid setze at the apex. Head and rostrum somewhat coarsely, closely punctate, the rostrum subcylindrical, very slightly widened towards the tip: eyes small. Pro- thorax longer than broad, constricted in front, rather sparsely punctate. LElytra moderately elongate, parallel in their basal half, coarsely seriate-punctate, the punctures placed along faint striz, the inter- stices flat. Length 24 millim. (Q ?) Hab. Perv, Maropan (coll. Fry, in Mus. Brit.). One specimen. Near R, tenuiculus, but more depressed, entirely ferruginous in colour (the eyes excepted), the elytral interstices flat. Very like the New Zealand R. fulvicornis, but smoother and less pubescent (except at the apex), the anterior coxe more approximate. CC 2 12 RHYNCHOPHORA. Hab. Panama, Volcan de Chiriqui 8000 feet (Champion). One pair, found under bark, in June 1882, in the bamboo-thickets at the highest point reached by the present writer on the slope of the Volcan de Chiriqui. Larger and broader than the other American species referred to Rhinanisus, the rostrum considerably widened towards the tip in the male, the antenne inserted nearer its base, the anterior coxe a little less approximate. 2. Rhinanisus ventralis, sp. n. (Tab. I. fig. 14.) Very elongate, narrow, depressed, moderately shining, finely alutaceous, varying in colour from piceous to ferruginous, the rostrum, antenne, and legs constantly ferruginous, the head and prothorax often blackish and darker than the elytra; clothed when fresh with a very fine scattered pubescence, which is more distinct on the lower than on the upper surface, the elytra with some conspicuous fine, semierect, pallid, setiform hairs at the apex. Head (the globose basal portion excepted) closely and somewhat coarsely punctate; eyes small; rostrum slender, slightly widened towards the tip, feebly curved, about as long as the prothorax, sparsely punctate, the antennz inserted at the middle in both sexes. Pro- thorax as long as broad, slightly rounded at the sides, narrowed and strongly constricted in front, closely punctate. Elytra very elongate, slightly wider than the prothorax, subparallel for about three- fourths of their length; closely punctate-striate, the interstices narrow and each with a row of minute scattered punctures, which become more distinct on the apical declivity. Beneath closely, finely punctate ; ventral segments 1 and 2 broadly sulcate down the middle in the ¢. Tarsal joints 1 and 2 slender. Length 2,4,-2;%, breadth 2-3 millim. (¢ 9.) Hab. GuatemMata, El Tumbador, Las Mercedes, Cerro Zunil, Senahu (Champion). Sixteen specimens, all but one from the Pacific slope and from elevations between 2500 and 5000 feet. Very variable in size and colour, and mainly distinguishable by the closely and coarsely punctured black head, and the conspicuous pallid setiform hairs on the apical portion of the elytra. The single (3) example from Senahu is larger and darker than the others, and has the elytral interstices more distinctly uniseriate-punctate ; it has, however, the ventral segments 1 and 2 sulcate, as in the typical males from Cerro Zunil. 3. Rhinanisus planatus, sp. n. (Tab. I. fig. 15.) Very elongate, narrow, strongly depressed, moderately shining, finely alutaceous, castaneous, the eyes and the exposed portion of the head black, the under surface piceous, the apex of the elytra and the under surface clothed with a few fine hairs. Head (the globose basal portion excepted) closely and somewhat coarsely punctate; eyes small; rostrum slender, feebly curved, cylindrical, about as long as the prothorax, very sparsely punctate laterally, smooth along the centre, the antennz inserted just behind the middle. Prothorax as long as broad, rounded at the sides, narrowing forwards and strongly ‘constricted in front, closely punctate. Elytra very elongate, flattened, subparallel for nearly four-fifths of their length ; closely punctate-striate, the interstices narrow, faintly uniseriate-punctate. Beneath rather sparsely, somewhat coarsely punctured. Tarsal joints 1 and 2 slender. Length 23-24, breadth 3-2 millim. (9 ?) Hab. Panama, Petia Blanca 3000 feet (Champion). Two specimens. A very elongate form allied to 2. ventralis, with the rostrum a RHINANISUS.—STENOTRUPIS. 13 little longer, smoother, and more slender, the elytra somewhat longer, flatter, and parallel to near the tip, the under surface not so closely punctate. In both species the eyes are small and separated by a narrow space from the transverse furrow behind them. 4, Rhinanisus tenuiculus, sp. n. Elongate, narrow, moderately depressed, finely alutaceous, shining, piceous, the antenna, tip of the rostrum, apical margin of the elytra, and legs reddish; clothed with scattered minute hairs, which become longer and setiform at the apex of the elytra. Head and rostrum sparsely, finely punctate, the rostrum rather slender and subcylindrical, the antenne inserted behind the middle. Prothorax a little longer than broad, gradually narrowing from the rounded hind angles, strongly constricted in front, finely, somewhat closely punctate. Elytra moderately long, subparallel in their basal half, closely punctate-striate, the interstices feebly convex, faintly uniseriate-punctate, the punctures becoming more distinct at the apex. Beneath sparsely, finely punctate. Tarsi with joints 1 and 2 rather slender, 4 long and narrow. Length 2-22, breadth 3-2 millim. ( 2.) Hab. Guatemaia, Duefias, Atlantic slope (Champion). Two specimens. Extremely like &. pilicauda, but easily separable therefrom by the longer and more slender tarsi, the prothorax, too, is a little more coarsely and sparsely punctured. Less elongate than &. ventralis and &. planatus, the prothorax less rounded at the sides, the elytra distinctly more convex. 5. Rhinanisus pilicauda, sp. n. Elongate, narrow, moderately depressed, finely alutaceous, shining, piceous, the antenne and humeri reddish ; clothed with scattered minute hairs, which become longer, erect, and setiform at the apex of the elytra. Head and rostrum sparsely punctate, the rostrum slender and almost straight in the 9, and a little shorter, stouter, and more curved in the g, the antenne inserted behind the middle, the eyes slightly prominent. Prothorax longer than broad, suboval, strongly constricted in front, closely, finely punctate. Elytra moderately long, subparallel in their basal half; closely punctate-striate, the interstices faintly uniseriate-punctate, the punctures becoming more distinct at the apex. Beneath finely, rather sparsely punctate; first ventral segment slightly depressed down the middle in the ¢. Tarsi stout, comparatively short, the third joint feebly emarginate. Length 24, breadth 3 millim. (¢ @.) Hab. GuateMALA, Chiacam in Alta Vera Paz (Champion). One pair. Differs from the other species of the genus in the rather short, stout tarsi. ‘The setiform pallid hairs at the apex of the elytra are conspicuous. STENOTRUPIS. Stenotrupis, Wollaston, Trans. Ent. Soc. Lond. 1873, pp. 484, 447, 515, 602. ? Diedimorpha, Broun, New Zealand Journ. Sci. i. p. 489 (1883). The two forms referred to this genus by Wollaston are from the Malay Islands * and Cuba respectively. The one now added is the first to be recorded from the * §. evilis, Pasc., from Aru, is based on two different species, the female being a true Stenotrupis and the male belonging to a very different genus, Coptus, Woll. The two sexes of the Malayan S. crassifrons were described by Wollaston. 14 RHYNCHOPHORA. American mainland. ‘They are elongate, narrow, minute, depressed forms, with a strongly exserted head and a d-jointed funiculus. The New Zealand insects forming the types of Diedimorpha, Broun, seem to me to be scarcely separable from Stenotrupts. 1. Stenotrupis ovaticeps, sp.n. (Tab. I. fig. 16.) Elongate, very narrow, depressed, shining, rufo-testaceous, the eyes and the space between them black ; sparsely, very finely pubescent, the pallid hairs becoming longer and more conspicuous towards the apex of the elytra. Head strongly exserted, ovate, sparsely punctate ; rostrum a little longer than the head, slender, slightly widening outwards, sparsely punctate, the antennx inserted at about the basal third, the funiculus and scape slender. Prothorax a little longer than broad, subconical, constricted in front, the sides rounded at the base ; sparsely impressed with rather coarse oblong punctures. Elytra elongate, widening to a short distance below the base and subparallel thence to near the apex, the apex itself bluntly rounded; closely seriate-punctate, the interstices flat and alutaceous. Beneath somewhat coarsely, rather sparsely punctate. Legs moderately stout. Length 12, breadth 4 millim. (9 ?) Hab. Panama, Bugaba (Champion). One specimen. Allied to the Cuban and San Domingo S. acicula, Woll. (= Cato- lethrus palmeus, Schonh., in litt., in coll. Pascoe), but less depressed, the head a little shorter, the prothorax less elongate, the seriate punctures on the elytra more scattered, and the bristly hairs at the apex not so conspicuous. PSEUDOPENTARTHRUM. Pseudopentarthrum, Wollaston, Trans. Ent. Soc. Lond. 1873, pp. 434, 445, 512, 597; Casey, Ann. N. York Acad. Sci. vi. p. 696. Phiwophagomorphus, Wollaston, loc. cit. pp. 434, 445, 511, 596. ? Pentarthrinus, Casey, loc. cit. p. 698 (1902). This genus has its headquarters in Mexico and Guatemala, extending northwards into the United States and southwards into Colombia. The numerous new forms now added, three only of which have been obtained in any numbers, connect Wollaston’s genera, which cannot be maintained as distinct *, and it is probable that Pentarthrinus also will have to be sunk under Pseudo- pentarthrum. The species are all of small size, subcylindric or conico-cylindric in shape, and mostly black or castaneous, with the surface bare and shining. The Central-American representatives may be roughly grouped thus :— Head flattened or, at most, very slightly depressed between the eyes. [Psrupo- PENTARTHRUM, Woll. | Rostruin distinctly grooved down the middle towards the base. The groove extending upwards on to the interocular portion of the head . . Species 1. * Other unnamed forms from the West Indies (from Cuba and Montserrat) are contained in the U.S. Nat. Museum. Mr. H. H. Smith has also captured a species in Grenada. PSEUDOPENTARTHRUM. 15 The groove not extending on tothe head . . . . . . . . +. ~~ Species 2. Rostrum without definite median groove towards the base. . . . . . . . Species 3-6. Head transversely depressed and more or less distinctly foveate between the eyes. [ Puit@orHacomorpuus, Woll.] Rostrum distinctly grooved down the middle towards the base . . . . . . Species 7. Rostrum obsoletely grooved down the median third . . . . . . . . . Species 8. Rostrum without definite median groove . . . . . . . . . + + +) «Species 9-13. 1. Pseudopentarthrum lineifrons, sp. n. Moderately elongate, convex, subcylindrical, shining, black, the antenne and tarsi ferruginous. Head very sparsely, minutely punctate, flattened and feebly longitudinally sulcate between the somewhat prominent eyes, the fine median groove extending forwards along the basal half of the rostrum, the rostrum itself very short and broad, closely punctate, and with its apical portion transversely quadrate. Prothorax nearly as long as broad, subconical, obsoletely constricted in front, closely, rather finely punctate. Elytra comparatively short, much wider than the prothorax, convex, parallel in their basal half, with rows of subapproximate punctures placed along faintly-impressed narrow striw, the interstices narrow, almost flat, and finely uniseriate-punctate. Length 2, breadth + millim. Hab. Guatumata, Duefias (Champion). A small, moderately elongate, convex form, with a very short, broad, finely sulcate rostrum, the head without transverse frontal depression, the prothorax rather narrow and subconical, the elytra comparatively short and cylindrical, closely seriate-punctate, and with narrow, distinctly uniseriate-punctate interstices. One specimen. 2. Pseudopentarthrum angustulum, sp. n. Moderately elongate, narrow, subcylindrical, convex, shining, black, the antenne, tibie, and tarsi ferruginous. Head very sparsely, conspicuously punctate, slightly depressed between the eyes, the latter small; rostrum short, stout, slightly constricted at the base, sparsely punctate, the basal portion faintly sulcate anteriorly. Prothorax as long as bread, convex, slightly narrowing forwards, feebly constricted in front, closely, somewhat coarsely punctate, with indications of a smooth median line, Elytra broader than the prothorax, very gradually widened to a little beyond the middle and then arcuately narrowed to the apex; rather coarsely punctate-striate, the sutural stria deeply impressed, the interstices somewhat convex and each with a row of scattered extremely minute punctures. Length 27, breadth 4 millim. Hab. Mexico, Atoyac in Vera Cruz (//. Hf. Smith). One specimen. A small, narrow, convex, posteriorly widened form, with the head very slightly depressed between the eyes, the basal portion of the rostrum faintly sulcate anteriorly, the puncturing of the prothorax and elytra coarse. 3. Pseudopentarthrum mexicanum, sp. n. Moderately elongate, conico-cylindric, shining, black, the antenne and tarsi ferruginous. Head with a few scattered punctures, slightly depressed and obsoletely longitudinally grooved between the eyes, the latter rather large; rostrum very short and stout, sparsely punctate, the basal portion obsoletely grooved anteriorly. Prothorax about as long as broad, convex, oval, scarcely constricted in front, closely, uniformly punctate. Elytra broader than the prothorax, gradually widened to about the middle; with 16 RHYNCHOPHORA. rows of coarse punctures placed along faint striw, the sutural stria deeply impressed, the interstices feebly convex and obsoletely uniseriate-punctate. Length 21, breadth ¢ millim. Hab. Mexico, “Sierra de Durango ” (ége, ex coll. Solart). One specimen. Extremely like P. angustulum, and perhaps the sexual complement of that species, but broader behind, with a shorter and stouter rostrum, which is indis- tinctly grooved anteriorly, the scrobes extending back to the eyes and then running downwards, the eyes themselves a little larger. The rostrum is similar to that of P. planifrons, but this last-mentioned insect has the elytra parallel and striate near the suture only and the prothorax more sparsely punctured. 4, Pseudopentarthrum planifrons, sp. n. Moderately elongate, subcylindrical, shining, black, the antenne and tarsi ferruginous. Head very sparsely punctate, almost unimpressed between the eyes; rostrum very short and stout, finely punctate. Pro- thorax about as long as broad, oval, feebly constricted in front, somewhat closely punctate. Elytra considerably wider than the prothorax, moderately long, parallel in their basal half, coarsely seriate- punctate, the punctures placed along fine, shallow strie near the suture and becoming smaller and more scattered towards the sides, the sutural strie deeply impressed from a little below the base, the interstices flat and obsoletely uniseriate-punctate. Beneath sparsely, finely punctate. Anterior cox subcontiguous. Length 23, breadth 2 millim. Hab. GvuateMaua, Chacoj inthe Polochic valley (Champion). One specimen. This is a true Pseudopentarthrum, following Wollaston’s diagnosis, and nearly related to P. brevirostre, differing from that insect in the relatively narrower prothorax and the more scattered seriate punctures on the elytra, those near the suture coarser and the sutural stria deeply impressed. 5. Pseudopentarthrum brevirostre, sp. n. (Tab. I. fig. 17.) Moderately elongate, subcylindrical, rather convex, shining, black, the antenne, tibis, and tarsi more or less ferruginous. Head sparsely, minutely punctate, obsoletely foveate and almost unimpressed between the eyes ; rostrum extremely short, stout, subquadrate, closely, finely punctate, the anterior portion with a very faint median groove in one specimen (?accidental). Prothorax scarcely broader than long, oval, constricted in front, closely punctate. lytra moderately long, very little wider than the prothorax, parallel in their basal half, with rows of moderately coarse punctures placed in shallow strie, the sutural line only deeply impressed, the interstices almost flat and obsoletely uniseriate-punctate. Length 23, breadth 5%, miilim. Hab. Mexico, Jalapa (Hége), Motzorongo (Flohr). Two specimens. Very near P. phlwophagoides, Woll., but differing from the unique type of that insect in its rather larger size and more elongate shape, the more rounded sides of the prothorax, and the less raised elytral interstices. The head is almost unimpressed between the eyes and the rostrum extremely short as in Wollaston’s species, the type of the genus Pseudopentarthrum. The relatively broad prothorax separates P. brevirostre from the other allied forms. PSEUDOPENTARTHRUM. 17 6. Pseudopentarthrum phleophagoides. Pseudopentarthrum phiwophagoides, Woll. Trans. Ent. Soc. Lond. 1873, p. 597°. Hab. Mexico (Trugui, in coll. Fry 1). This species, the unique type of which is in the British Museum, may be known from the allied forms by its small size, the extremely short rostrum, the unimpressed head, the densely punctured, somewhat parallel-sided prothorax, and the cylindrical elytra. | 7. Pseudopentarthrum incisum, sp. n. Elongate, subcylindical, shining, dilute fusco-castaneous, the under surface, head, and femora blackish. Head sparsely punctate, strongly, transversely depressed between the eyes; rostrum short, stout, slightly constricted at the hase, closely punctate, the apical portion subquadrate, the basal portion narrowly suleate down the middle. Prothorax slightly broader than long, oval, constricted in front, closely punctate. Elytra somewhat depressed, elongate, considerably wider than the prothorax, subparallel for two-thirds of their length, conjointly rounded at the apex; coarsely crenate-striate, the interstices convex and obsoletely uniseriate-punctate. Length 2?, breadth 1 millim. Hab. Mexico, Omilteme in Guerrero 8000 feet (H. H. Smith). One specimen. Nearly related to the Colombian P. (Phlwophagomorphus) angusticolle, Woll. (the unique type of which is similarly coloured, perhaps due to immaturity), but smaller and more depressed, the rostrum faintly sulcate, the prothorax shorter and with the sides more rounded, the elytra flatter and with rather narrower interstices. The elongate, narrow shape, the distinctly sulcate rostrum, the coarsely crenate-striate elytra, &c., distinguish P. inciswm from its nearest allies. 8. Pseudopentarthrum subcylindricum, sp. n. Moderately elongate, subcylindrical, convex, shining, black, the antenne and tarsi ferruginous. Head very sparsely, minutely punctate, strongly, transversely depressed and shallowly foveate between the eyes; rostrum very short and stout, closely punctate, faintly sulcate along the median third. Prothorax slightly broader than long, oval, feebly constricted in front, closely, finely punctate. Elytra moderately long, convex, much wider than the prothorax, parallel in their basal half; with rows of subapproximate small punctures, which are placed in shallow strize towards the suture, the interstices broad, almost flat, obsoletely uniseriate-punctate. Length 23, breadth 8, millim. Hab. Guatemaa, Zapote, Pacific slope (Champion). One specimen.