Abdomen much exposed, with the apex obtuse, faintly trideutate. 



Legs rathei long, bright yellow. 



Under parts black, with the mouth and coxae yellow. 



Differs from T. crassicolUs in it- Bmaller size, depressed base of the thorax, short 



elytra, and general sculpture. 

 Habitat, Central America. Found in Guatemala by Mr. Champion. 



Trichopteryx truncatissima. 



T. truncatissima, Matthews, Ann. Mag. Nat. Hist. 6, iii. 1889, p. 192. 



L. c. vix j% lin. = 0*75 mm. — Brevissima, postice validissime attenuata, eon- 

 vexa, rugose exsculpta, nigra, pilis fulvis dense vestita : c ipite magno, sat fort 

 tubercnlato ; oculis modicis, haud prominentibus ; pronoto magno, ad basim latis- 

 Bimo, ordinibus irregularibus rugose tuberculato, interstitiis reticulars, lateribus 

 rotundatis et marginatis, margine basali t" . angulis latis, longe produetis ; 



elytris perbrevibus, fuscescentibus, postice validissime attenuatds, capite atque pro- 

 noto multum angustioribua et multum brevioribus, ad humeros latissimis, ordinibus 

 transversis profunde et confertim asperatis, lateribus rectis et marginatis, apicibus 

 angustis, valde rotundatis, dilutioribus, extremis albiclis ; abdomine nigro, Ion 

 exserto ; pedibus robustis, laete flavis ; antennis modicis, gracilibus, obscure flavis. 



B dy very short, exceedingly attenuated posteriorly, convex, rugosely sculptured, 

 black, thickly clothed with fulvous hair. 



Head large, strongly tuberculated ; eyes moderate, not prominent ; antennae mode- 

 rate, slender, dusky yellow. 



Thorax very larg -t at the base, rugosely tuberculated in irregular rows, the 



interstices reticulated, sides rounded and margined, basal margin nearly 

 straight, with the angles broad and much produced. 

 large, triangular, and deeply asperated. 



Elytra fuscescent, very .short, exceedingly attenuated posteriorly, much shorter and 

 much narrower than the head and thorax, widest at the shoulders, deeply and 

 closely asperated in transvi i raight and margined, extremities 



narrow, much rounded and paler, with the edges white. 



Abdomen much exserted, black. 

 robust, bright yellow. 



Undt r parts entirely black. 



Differs from all other species in its very short form, large thorax, very small and 

 excessively attenuated elytra, and in its very rugose sculpture. 



Habitat, South America. Found in Brazil, near Blumenau. 



This is a very distinct and remarkable species, easily recognised by its short 

 and excessively attenuated elytra. 



Trichopteryx minor. 



T. minor, Matthews, Iran.-. Am. Eut. Soc. \i. p. 184, 1884 ; Biol. Cent.-Amer. 



Col. ii. pt. i. p. 140, 1---. 



L. c. , 7 ,. lin. 0*87 mm.— Oblongo-ovalis, convexa, nitidula, nigra, pilis lul 

 den-' -. ipiti modico, antice producto, tuberculis minutis rem 



oculis modicis, hand prominentibus; pronoto sat magno, prope medium latissimo, 

 capite longiori et latdori, tuberculis magnis, ordinibus sinuatis dispositis, inl 

 stitiisque leviter reticulata, ornato, lateribus marginatie 

 erects ante media atrinque instructis, mat -ali parum r< flexa, Binuata, 



valdi i dilutioribus; elytris -at I .quadrat 



atque pronoto nee longioribus, neque latioribus, ordinibus trail confertim et 



