;");■")() FAMILY XIX. -("(»!. ^'DIID.V:. 



Ill hal)its the Colydiidtu are in part carnivorous, as the hirvu' of 

 certain genera are known to feed upon tliose of other small, wood- 

 boring forms. Al)ont (iOO species are known, 70 of which are from 

 North America. These are divided among numerous tribes and 

 genera, many of the latter containing but a single species. The only 

 I)aper which treats of the family as a whole is by 



Horn. — "Synopsis of the Colydiidie of the T'. S.." /// Proc. 

 Amer. Phil. Soc. XVll. 1878. 555-592. 



Other short papers by Casey on isolated species have appeared 

 m the Annals of the N. Y. Academy of Science. Fourteen species 

 of the family, distri'outed among 11 genera, have been taken in 

 Indiana. Several other genera are doubtless represented in the 

 State, and are induded in the generic keys which follow: 



KEY TO INDIANA TUIIJES OF COLYDllUyE. 



(/. Antenna' inserted under a distinct rrontal rid^e; frcmt coxte distant 

 from the uiesosteniuni. 

 h. Last joint of palpi not needle-siiaped. 

 c. Front cox?e slightly separated. 



d. First joint of tarsi short: U>vu\ cluimate or oval. 



Tribe I. SvNeinTiNi. p. o.'o. 

 lid. First joint of tai'si ]on;_'('r than the second: foi'ni cylindrical. 



Tribe II. Colydiini, p. 55:!. 

 cr. Front cox:e widely separated: form elont^ate. snbdepressed. 



e. AntemiiX' arising under a frontal margin: lirst ventral segment 



not elongate: trochanters free. 



Tril>e III. I'y'cnomekini. p. T>7>Tt. 

 <'c. .\ntcnna' free at liasc: tirst ventral segment elongate; trochanters 

 closely united tot lie feniui-a. 



Tribe IV. Boturiderini. )). 5rirt. 



hi). Last joint of palpi needle-slia|ied : antenna' free at base; form short. 



oval, depressed. Tribe V. Ckkylontni. p. OoT. 



(/(/. Antenna' inserted on the frunl : ti-ont co.xa' inclosed behind by the meso- 



sternnni. Tribe \\. .Mrii.MiniiNi. p. T).".!. 



Tribe I. SYXCllITIXL 



Elongate or oval species having tlie surface often i-il)])ed and 

 more or less bristly: tarsi short, the tirst three joints suliequal and 

 togetlier not h)ngei- than fourth. 'I'he following geiiei-i are known 

 to be (»■ should l)c represented in Indiana : 



KEY 'lO INOIAXA OENi:i!A OK SYNCIiniM. 



((. I'roni coxal caxities open lieliind. 

 //. Antenna' 10-jointed. club solid. 



c. Head beiK^ath witJK.ut antenna! m-ooves. I. Synchita 



