T. D. A. Cocker ell — Descriptions of Tertiary Insects. 51 



Art. TV. — Descriptions of Tertiary Insects • by T. D. A. 



CoCKERELL. 



(I) A Coleopterous Lakva from the Green River Shales. 



The larva here described occurs in the red shales of Green 

 River, Wyoming, and is represented in the Yale University 

 Museum by a good specimen, with the reverse. The name of 

 the collector is unknown. In appearance the insect very closely 

 resembles the larva of Carabus truncaticollis Fisch., well 

 figured by Kincaid in Proc. Wash. Acad. Sci., vol. 2, pi. xxii. 



Carabites Mncaicli sp. nov. Fig. 3. 

 Length about 22 mm , width in the middle a trifle over 4, 

 l 2 3 



Figs. 

 Fig. 



1, 2. Platypedia primigenia 

 ]. Carabites kincaidi x 2. 



narrowing somewhat caudally, the widest point however a little 

 posterior to the middle ; head small, about If mm diameter ; 

 pronotum about 3 ram broad and 2 mm long, thus much shorter 

 than in modern Carabus, and not especially differentiated from 

 the other segments ; segments formed as in Carabus, more 

 than twice as broad as long, with the lateral hind margins 

 angulate in the same manner and degree as in C. truncaticollis. 

 The segments are dark, with the sections colorless, and there 

 are indications of a median longitudinal light line. The details 

 of the caudal end cannot be made out. 



