44 FAMILY II. CARABIU.K. 



andreicsii Harr., but. according to Leng. typical andrcwsii occurs 

 only in the mountain region of North Carolina, is smaller, more 

 slender and lacks the interruption of s.ime of the striae usually 

 noted on the apical third of the Indiana spL-eimeus. 



Tribe III. OARABIXl. 



Species of medium or large size, for the most part noted for 

 their beauty of form, color or s-ulpture. Head not constricted be- 

 hind the eyes; labrum broad and emarginate: mandibles stout. 

 curved and without bristle-bearing pimcture on outer side. Body 

 not pedunculate; scuteUum small. Prosternum prolonged, the 

 front coxal cavities open behind, the hind cosa_^ not separated. 

 Males with the front tarsi dilated and densely pubescent beneath. 

 The tribe is represented in the Tnited States and Indiana by two 

 genera, separated as follows; 



KEY TO GEXERA OF CARABIM. 



a. Third joint of antennse cylindrical. Ill- Caeabus. 



aa. Third joint of antennoe compressed. • IV. Calosoma. 



III. CAEABts Linn. 1765. (6r.. "a horned beetle.'") 



Black or brownisli-black species above the average in size and 

 with the surface of the elj'tra more or less sculptured. They occur 

 beneath stones and loss and are nowhere common, not more than 40 

 specimens having been taken in the State during 25 years* collect- 

 ing. Nine or ten species are known from the United States. Of 

 these four have been taken in Indiana while another probably oc- 

 curs. Por sATioptic tables separating the United States species see: 



Cr.-fc/).— Trans. Amer. Ent. So,-.. V. 1S76, 247. 



Crofc/i.— Bull. Brook. Ent. Soc.. I. 1S7S. 66. 



KEY TO IXDIAX.\ Sl'KcltS OF CAKABVS. 



a. Thorax punctate beneath; color brassy-bnmze ; elytra finely granu- 

 late with broken and continuous elevations. ii.5LAXDEB. 

 aa. Thorax not punctured beneath. 



h. Elytra each with three rows of fove;^ or little pits. :.'(;. sylvosus. 

 66. Elytra without fove:e but with the fourth, eighth and twelfth inter- 

 vals broken so as to resemble a serit■^ of links. 

 C-. Margin of elytra serrate near the base. 27. serbati-s, 



cc. Margin of elytra not serrate. 



'/. Elytra black, the margins bluish; intervals e(]ual. 



iS. UMB.\TUS. 



dd. Elytra bronzed: four of the intervals elevated so as to form 

 slender ridges. 20. vinctus. 



