488 FAMILY XII. THl(,lIOI>TERYO:iD;K. 



segments, three of which tire exposed above; prosternum produced 

 behind into ti long, broad plate, bifid at apex; mesosternum strongly 

 carinate. produced into a broad, spoon-shaped process which covers 

 the hind coxa j . 



937 (29r.ro. LIMULODES PARADOXA Matthews, Ann. Lye. Nat. TTist., X. Y., 



VIII, ISfiT, 409. 



Conic, widest in fnnil. very convex. Reddish-yellow, shining, Iliickly 

 clothed with :i silky grayish pubescence. Thorax very large and cnnvex. 

 widest: at base, sides circularly rounded in front, hind angles acute and 

 slightly produced: surface alntaceons. Elytra shorter and narrower than 

 head and thorax, surface very finely and prettily granulate. Length 1 mm. 



Clark County; scarce. May 5. Three specimens from ants' 

 nests beneath flat stones. Occurs throughout the United States. 



Picryx brunnca Lee., chestnut-brown, thorax with sides widest 

 at the base, length .9 mm., and P. bait eat a Lee., bright yellow, tho- 

 rax with sides slightly rounded and wi'dest before the base, length 

 .li mm., may occur in southern Indiana. 



I'l iitcUodfs Iccoiild Matth.. elongate-oblong, yellow, translucent, 

 length 1 mm., may also occur. 



IV. TKICHOPTERYX Kirby. 1ST!). (Or., "feather +wing.") 



A large genus of small oblong or ovate species, having the anten- 

 na* 11 -.jointed, the last three joints forming a bead-like club; head 

 large, rather defiexed; elytra truncate, usually short; abdomen with 

 six ventral segments ; hind coxa 1 moderately distinct, the outer edge 

 expanded into a broad plate. Of the 30 or more species known 

 from North America but two have as yet been taken in the State, 

 though several others doubtless occur. 



KEY TO INDIANA SPEC'IKS OK TRH'HOPTERYX. 



(t. Thorax distinctly wider than elytra. 



It. Thorax smooth; elytra not attenuate; color dark chestnut brown, 

 shining; length .0 mm. GI.ARRICOLUS. 



1>1). Thorax with small, rather remote tubercles or granules, 



c. Head and thorax black, the latter dilated; elytra dark chestnut 

 brown; form elongate-oblong. 938. HALDEMAXXI. 



re. Entirely black but thickly clothed with long reddish hair; thorax 

 widest before the base: length .9 mm. ABRUPTA. 



mi. Thorax scarcely or not at all wider than elytra. 

 <L Hind angles acute, often produced. 



c. Head, thorax and abdomen black, elytra dark reddish-brown; 

 length .9 mm. PAKAU-KI.A. 



cc. Entirely black or fuscous black. 



/. Elytra widest at apex; length .s nun. ASPERA. 



