Abdomt n very littli d, black. 



I slender, bright yellow. 

 / 'ml: r parts entirely black. 

 Differs from all other species in ii , rounded and very convex form, smooth 



and very shining aurface, deep black colour, and long antennae. 

 Habitat, North America. This remarkable species was one of the last discoveries 

 ited friend Mr. G. R. I <\ whom it was found near 



Philadelphia. A ond example has since then occurred in the same locality. 



Trichopteryx tesserula. 



T. tesserula, Matthews, Ann. Ma-;. Nat. Hist. 6, iii. p. 193, 1889. 



L. c. ,";, Ii"- = 0-63 mm. — Brevissima, quadrata, sat depressa, nitidula, fusca, 

 pilia paUidis vi apite permagno, antice producto, leviter et remote tubercu- 



uterstitiis leviter reticulatis ; oculis parvis : pronoto brevi, capite parum Latiori, 

 band longiori, ad basim latissimo, tuberculis parvis remotis, interstitiisque nitidis, 

 reticulatis, ornato, lateribus marginatis, leviter rotundatis, margine basali fere 

 ;ulis minime productis; elytris perbrevibus, omnino quadratis, depressis, 

 capite atque pronoto hand longioribus aut latioribus, modice asperatis, lateribus 

 rectis, leviter marginatis, apicibus latis, \i\ rotundatis; abdomine modice e: 

 rufo-piceo ; pedibus atque antennis sat gracilibus, bote flavis, parum articulo octavo 

 parum incrassato. 



Body very short, quadrate, rather depressed, moderately shining, clothed with pale 



hair, fuscous, 

 v.ry large, produced in front, ornamented with small remote tubercles, 



interstices faintly reticulated ; .yes small ; antenna' moderate, slender, yellow, 



witli the eighth joint incrassate. 

 Thorax short, rather broader but not longer than the head, widest at the base, 



ornamented with small remote tubercles, the interstices reticulated, sides 



margined and slightly rounded, basal margin nearly straight, with the angles 



scarcely produced. 

 ScuteUum small and broad, triangular. 

 Elytra very Bhort, perfectly quadrate, depressed, not longer or broader than the 



head and thorax, o ly asperated, sides straight, slightly margined, 



extremities very broad, scarcely rounded. 

 Abdomen moderately • sserted, rufo-piceous. 

 Legs rather -lender, bright yellow. 

 / ..,. / / parts castaneous. 



rs from all oi ties in it- very small sizi , and perfectly quadrate form. 



- , North America. Found in California by Mr. Casey. 



Trichopteryx vitrea. 



/'. vitrea, Matthews, Trans. Am. Ent. Soc. xi. p. L89, 1884; Biol. Cent.-Amer. 



Col. ii. pt. i. p. 1 12, 1888. 



L. e. iV,-i p c lin. ()\".<)-0T>3 mm. Perbri vis, lata, valde convexa, translucide 



pilis brevibus, aureis, Bparsissime induta; capite magno, lato, antice 



producto, tnberculis exiguis remote orn culis magnis, valde prominentibus ; 



pronoto brevi, transverso, capite -at latiori, hand longiori, ante basim latissimo, 



tuberculis exiguis, remotis, interstitiisque glabris, nitidis, ornato, lateribus rotun- 



. margine basali fere lis vix productis: elytris brevibus, subquad- 



rati-, capiti r longis et latis, prope media lat 



leviter sed confertim asperatis, lateribus rotundatis, ape ;- contn 



L 



