(i72 FAMILY XXXl.- BVKKIIID.l';. 



coxal eavilies open hciiiiid; hitui (-(.XiV exteiidiiiii' to the iiiai^uin of 

 the body, transverse and dilated wiio a plate partly protecting the 

 hind thighs; tarsi short, iive-.ioinied. last join.l nearly as long as the 

 others united. 



The literatnre ticating of the North American species is as 

 foUows: 



LfCoiiic. — "Synopsis of the l>>rrhi(l;e of the Tnited States," in 



Proc. IMiil. Acad. Nat. Sci.. VII, 18r)4. ll:!-117. 

 Horn. — ''Taljle of Species of Liiiniichns,'' /// IJnll. l'. S. (Jeol. 



Snrvey, V, IST!), r)14. 

 TrrsT//. -"l/nnnichns," Synopsis of," iit Ann. X. V. Acad. Sci., 



V, ISDO. 14r> 1(;(). 

 Foi'ly-six species, dislriimled anuMiii' 11 genera, represeid the 

 family in 1h'' I'nited Slale^;. ( M' ihese S species, belonging to four 

 genera, liav<' been tal<en in Indiana. 



KEY TO INDIANA (iENKHA OK I'.YlUin H).K. 



(/. Ilc.-id proniiiient ; iiieiituni lar.ue, el()n,i;ate, semi-elliiilicnl. (■(i.irscly iiuiic- 



tate, entirely closing the month below. 1. Nosoukmikox. 



(/(/. Head retracted; iiieutnni small, <iuadrato, lar,i;el,v cxiidsiiii,^ the i)ase ol" 



the inaxilhTG. 



b. Auteimie ll-.i'ninted. clavate : lower lace or episloma not distinct; size 



medlnni. 5 or mcn-e nnn. 



c. Front tarsi only retractile. II. Cytilus. 



cc. All the tarsi retractile. III. Byrrhus. 



bJ). Antenna' 10-jointcd ; epistcnia cornens. separated by a Hne suture; 



si/.c small, less than :: mm. IV. Limnichus. 



I. NosoDENDRON Lat. 1807. (Gr.. "disease + tree.") 



This genus coTii])rises two oval, convex beeth^s. having the head 

 advanced in front ; nu'iitum as described in l^ey ; antenna^ ll-.iointed, 

 situated under the side of head. They live beneath the l)ark of 

 trees. One of the two occurs in Indiana. 



12S7 (3876). Nosodendron unicolor 8a.y, Long's Exped. to St. Teter's Kiv.. 

 II. 274 ; ibid. I, ISO. 

 Rounded-oval, strongly convex. Black, somewhat shining; antennae pic- 

 eons. Above uniformly, rather densely and coarsely imnctate, more spar- 

 ingly and coarsely beneath. Elytra not striate hut with rows of short, 

 stiff. ercH't yellowish liairs. v>lainly visible only in side light. I>ength H- 

 r>.7 nmi. 



Lake. Putnam. Crawford and I'oscy counties; scarce. April 

 22-Julv 4. 



