'niK CLICK T5RKTr.KS. 71!) 



(hi. 'SI-avj:\\\:\\ line of Ihuniv. siricll.v liilci'iil. visihlc from nliovc 

 Ilir.iu-lic.ul ils full lcii,i,'tli ; clylrn yellow, willi black crosslmr; 

 Icimtli less I hail f. inin. XV 11. I roinsTONOTis. 



cc. 'rai-si Willi foiirlli Jtiiiil Idbcd luMicalii ; icniidi 7 iniii. 



X\'1II. E.STHESOITS. 



bh. Prostei-nal spine acute at apex; scutelluni ov.il. 



c. Prostermim very broad, sutures sin.irle, strai^;lit or couve.v on oulcr 

 side. 

 /. Tarsal claws siiuiil(>: (arsi of niodcr.ile Iciiiilli. clollicd wifli slilT 

 hairs. 

 !/. rrostenial sutures strais^ht. (Mlher jtarallel or (;ouver.i,'iug very 

 little IxMiiiid the middle; side pieces oL' mesothorax reaching 

 the middle coxa'; leuirth over 5 nmi. 



XIX. CllYPTOHYPNUS. 



(/(/. Prosternal sutures curved and very evidently converging be- 

 hind the middle; side pieces of mesothorax not reaching the 

 coxa;; smaller, less than 5 nun.; elytra usually with yellow 

 spots. XX. Hypnoidus. 



/•/". Tarsal claws with a tooth at middle; tarsi long, pubescent; uni- 

 form piceous black. XXI. CEdostethus. 

 ee. Frosternum of moderate width, sutures double, either straight or 

 concave on outer side. 

 /(. One or more of the tarsal joints lobetl beneath. 

 /. Second joint of tarsi without lobes. 

 ./. Third joint alone lobed. XXII. Anchastus. 

 jj. Fourth joint alone lobed. XXIII. Monocrepidius. 

 //. Second and third joints of tarsi with long lobes; color brown; 

 length 10 or more mm. 

 /,-. Mesosternum horizontal ; front of head with two crests unit- 

 ing above with frontal margin. XXIV. Dicrepidius. 

 kk. Mesosternum oblique: front of head not crested. 



XXV. ISCIIIODONTUS. 



hh. Tarsal joints not lobed beneath. 



/. Prosternal sutures excavated in front; joints 1 to 4 of tarsi 

 gradually increasing in length, ciliate beneath; color usually 

 variegated. XXVI. Elater. 



II. Prosternal sutures not excavated in front. 

 VI. Third joint of antennte longer than second. 



XXVII. Drasi-ebixs. 



WW. Second and third joints of antenna? small, equal. 



Megapentiies. 



aa. Margin of the front not elevated behind the labruni ; size larger, 15 or 

 more mm. in length. 

 H. Sides of mesosternal cavity sloiiing downward, not iirominent; ely- 

 tra black. XXVIII. LuDius. 

 »H. Sides of mesostei-nal cavity protuberant. ]irominent; color brown. 



XXIX. ORTIIOSTETIirS. 



[4C>— 284021 



