]5 NATURAL HISTORY BULLETIN 



punctures to tlie apical re<,non is not so complete in any modern 

 Hydnocera that J know, though in some of them this portion is 

 much more strongly or densely punctured tlian tlie remainder 

 of the elytra. In view of the wide range of abdominal exposure 

 and of tiioracic outline within this genus, I do not feel justified 

 in separating the fossil generically on the basis of these char- 

 acters. I take pleasure in dedicating this, the first fossil Hyd- 

 noccra, to my friend A. H. Wolcott, of the Field ^luseum of 

 Natural History. 



Vkillktta Lee. 



V. TENUISTRIATA 11. s|). (Plate IV, Fig. 12.) Form rather stout. Head, 

 prothorax, elytra, and uhdonien minutely punetulate or alutaceous. Eye of 

 moderate size, elliptical in outline. Antenna; wanting. Prothorax, in side 

 view, cuneiform, dorsal arch rather strong. Elytra overlapping in such a 

 way as to somewliat obscure the outline, but they were evidently long 

 enough to completely cover the abdomen, the surface with fine, deep, ap- 

 parently impunctate stria;, which, so far as they can be traced, run to- 

 gether at the apex in the same manner as in the recent F. laureniina, 

 epipleural lobe strong and with at least one stria. Abdomen with the 

 second segment longer than the third or fourth, and but slightly shorter 

 than the fifth. The sharp edge, which in life fits against the elytron, shows 

 in the fossil as a longitudinal carina, on account of the accidental abdom- 

 inal ileflection. Legs rather short. Length, 5.55 mm. 



The entire structure of this insect indicates a close relationship 

 to Vrillclta. The form is the same, the general sculpture is very 

 similar, the abdominal segmental proportions agree and so does 

 the length of the legs, as far as shown. In size, the present 

 species is almost identical with V. laureniina, but in the fine 

 elytral striatioii it comes closer to V. plumhea. In the fossil, 

 the head is incomplete anteriorly and is so represented in the 

 figure. Six species of tlie genus VriUeUa are found in North 

 America today, till lielonging to the Pacific coast fauna excepting 

 V. laureniina wliicli occurs near Toronto, (,'anada. 



DiNODERUs Hteph. 



D. CUNElCOLLis n. sp. (Plate II, Fig. 8.) Form stout. Head much 

 smaller than the prothorax, rather roughly granulate. Prothorax, in side 

 view, cuneate, the back strongly arched, surface granulate and with rather 

 ill-defined transverse rows of asperities across the anterior half. Elytra 

 with the dorsum moderately arched, the disk with three or four somewhat 



