1016 FAMIIjY LII. CEBAMBYCID.IC. 



18S2 (SONO). Smodicum oucujifobme Say. Journ. Pliil. Ac-ad. Nat. Sci., V, 

 1826, 277 ; ibid. II, 334. 

 Elongate, narrow, depressed. Pale, dull yellow, shining ; autenn;e sli.u'htly 

 darker. Thorax longer than broad, slightly contracted before the middle ; 

 surface, together with that of elytra, rather sparsely, liuely and irregularly 

 punctured. Femora much dilated. length 7-8 mm. 



Throughout the State; frequent. July 2-N()ve)iil)er 24. Occurs 

 beneath the close fitting bark of dead poplar, oak, locust and linn 

 trees. Has the form and habits of a number of the Cucujida?, 

 whence the specific name. 



Tribe II. CALLIDIINI. 



The species of this tribe arc more or less flattened, but not very 

 slender in form, and the thorax and elytra are never armed with 

 spines. The eyes are finety granulate and deejily emarginate ; head 

 small with the front short and perpendicular ; front coxal cavities 

 transverse, open behind, the coxfe with large trochantin. Males 

 with antenna; usually longer than body and thicker at base than in 

 females ; the fifth ventral segment short, subemarginate. Four 

 genera arc known to be represented in the State, while two others 

 probably occur. 



KEY TO INDIANA GENEEA OF CALLIDIINI. 



a. Elytra with narrow raised white lines; thorax with very deep median 

 groove: thighs strongly clubbed. VII. Pi-iysocnemum. 



aa. Elytra without distinct raised white lines. 



J). Thorax very short, strongly rounded on the sides ; upper surface en- 

 tirely opaque; black, thorax red. KiioPALons. 

 hit. Thorax not very short, the width not much exceeding the length ; up- 

 per surface more or less shining. 

 c. Front coxre contiguous, the presternum very narrow and pointed. 

 d. Palpi unequal, the labial much the shorter ; thorax rounded. 



VIII. Phymatoues. 

 lid. Palpi about equal ; mesosternum obtusely triangidar. 



IX. Callidium. 

 re. Front coxa; at least moderately separated. 



c. Dorsal surface of thorax with narrow median elevation and 

 moderate or siiiall ones on the sides; pmsternum broad; hind 

 (•oxa> inclosed. IIyloteupes. 



re. Dorsal surface of thorax with a broad, smooth, shining median 

 space on basal half; elytra with more or less distinct but 

 broken whitish markings. X. Mekium. 



