488 FA.MiL\' xir. — '!'KiciH)!"ri;!?Y(:ii).i':. 



spo'iruMils. Ilii'co of wliicli .'irc cxjiosimI ;i1)()V(^; prostei'tiuni |)i'()duced 



licliiiid iiild a loiiii'. hi'dad plalc, hilid a( a|)c\ ; iiicsoslciaiiiiii slroiit^ly 



cariiialt', jn'oduccd iiilo a liroad. siiooii-siiapcd ])i'()c('ss winch covers 

 tlie liiiid coxu'. 



!);>7 (208')). LiMULODFs PARADOXA jNIattliews, Ann. Lye. Nat. Hist.. N. Y.. 

 VI IT. ISCT, 40'.). 

 Conic, widest in rr<inl. vtTy convex. Iteddlsli-yellow. shining. Ihirlvly 

 clothed with a silky i^rayish pubescence. Thorax very large and convex, 

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

 slightl.v ])roduced: surface alutaceous. Elytra shorter and narrower tliaii 

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



Clai'lx County ; scarce. May 5. Three specimeus from ants' 

 nests bcnealli flat stones. Occurs throughout the United States. 



I'hrijx hrioincn Lee., chestnut-brown, thorax with sides widest 

 at the base, length .f) inin., and P. baltcata Lee, bright yellow, tho- 

 I'ax with sides slightly rounded and widest before the base, length 

 .() nun., may occur in southern Indiana. 



I'liiK Ihxlrs Irroiil,' i Matth.. elongale-oblong. y(dlow. translucent, 

 length 1 iinii.. may also >tccur. 



1\'. Tkiciiopteryx Kirby. 1S19. (Gr.. "feather +wing.") 



A lai'ge geinis of small oblong or ovate species, having the anten- 

 na^ ll-.iointed, the last three joints forming a bead-like club; head 

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

 six ventral segments; hind coxfe moderately distinct, the outer edge 

 expand (m1 into a broad jilate. Of the 30 or more species knowu 

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

 though several others doubtless occur. 



KKV TO INDIANA SPIXIIIS OK 'CRIC H OI'TKRYX. 



11. 'I'liorax distiiiclly wider llian elytra. 



h. Thorax siiiiMitli: elvlra iiol alleiniate; cdlni- dnri^ cliestiuU lii-n\\ii, 

 shining; lenglli .;» nun. (ir.Aiaucou-is. 



hb. Thorax with small, ratlier remote tubercles or granules. 



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



brown; form elongate-oblong. 938. haldemanni. 



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



widest bef(jre the base; length .!) nun. ABRrPTA. 



an. Thorax scarcely oi- not at all wider than elytra. 



(I. Hind angles acute, often produced. 



c. Head, tiior.-ix nnd .ilidonien ])lack. elytra dark reddisb-iirown : 

 lengtli .;» mm. parali.ki.a. 



( r. i;nlii-ely bl;ick or fuscons l)!a<-k. 



/. Kiytra widest at :iiie\ ; iength .S mm. aspera. 



