638 Goleopterological Notices, VII. 



Snpra-antenual tutuiclity obliquely angulate, the antenti£e more elongate ; 

 tempora short, the eyes very large ; body ochreous in color, the elytra 

 variegated with sublongitudinal patches of a darker brown. 

 Ely tral series composed of large approximate quadrate punctures. 



coiicolor Westw. 

 Elytral series composed of narrow, elongate punctures ; antennae less elon- 

 gate oculatus n. sp. 



The affinities of Cupes are veiy obscure, but certain structures, 

 as for example the reception of the acute prosternal process in a 

 deep pit of the mesosternum, proclaim its marked serricorn rela- 

 tionsliip. 



C. oculatus. — Form nearly as in concolor but less elongate, pale yellow- 

 ish-brown with indefinite sublineate spots of dark brown on the elytra; integu- 

 ments throughout densely scaly. Bead scarcely wider than the prothorax ; 

 sides above near the eyes longitudinally tumid, the elevation divided trans- 

 versely at the anterior limit of the very large convex eyes ; median line fine, 

 coarse anteriorly ; tempora very short. Prothorax fully % wider than long, 

 rectangular at apical fourth, the sides thence deeply sinuate and strongly con- 

 vergent to the apex, parallel and nearly straight in basal %, becoming feebly 

 convergent and arcuate toward base ; disk elevated along the middle, with a 

 fine median line, broadly reflexed at the sides, also deeply concave at each side 

 of the middle. Scutellum well developed, rounded. Elytra 2?^ to nearly 3 

 times as long as wide, parallel and straight at the sides, gradually narrowed 

 at apex, distinctly wider than the head ; ridges feeble, the second and third 

 alone distinct. Under surface densely scaly. Length 8.5-9.7 mm.; width 

 2.0-2.2 mm. 



Indiana. 



Difl"ers strikingly from concolor in sculpture and in its less 

 elongate and rather more depressed elytra, with subobsolete first 

 costa. 



The eyes in Cupes are very convex and composed of extremely 

 minute lenses ; the outer surface of the eye is perfectl}' smooth 

 and unbroken, the lenses shining through from the inner surface 

 of the external shell. I do not remember having observed this 

 peculiar structure in anj^ other type of the Coleoptera, but it is 

 probably not altogether confined to the present genus. 



LUCANID^. 



PI^ATYCERL^S Geoff, (auct.). 



Systenoceeus "Welse. 



The first species described below is allied in coloration, general 

 sculpture and structure of the antennal club to oregonensis, but 

 is much smaller ; the second is more closely related to depressus. 



