COLEOPTERA OF BAJA CALIFORNIA. 379 



lum not carinate. El3-'tra slightly sinuate behind the 

 humeri, the apices obtuse scarcely visibly serrulate, sur- 

 face closely submuricately granulate. Body beneath 

 similar in color to the upper surface. Prosternum mod- 

 erately coarsely punctured, the sides of metasternum 

 more coarsely, abdomen more finely and less closely 

 slightly undulating on the first two segments. Spaces of 

 white pubescence are found along the under margin of 

 prothorax, the mes-epimera, outer side of metasternum 

 and coxa? plate and at the front angle of each ventral 

 segment. The suture between the first two ventrals 

 well marked at both sides. Length, .35 inch; 9 mm. 



This species has the antenna? serrate beginning at the 

 fourth joint, the lower portion of the bifid claw^ not 

 strongly inverted, the pygidium has no projecting carina, 

 thorax slightly impressed at middle, the suture between 

 the first two ventrals plainly visible at the sides. It 

 is therefore closely related to piilchclliis and Walsino-- 

 hami, and differs from the former by the obtuse pygid- 

 ium and the uniformly colored elytra and from the latter 

 by the absence of pubescent spots. 



Coral de Piedra, Sierra El Taste and Pescadero. 



Plateros sanguinicollis n. sp. 



Black, thorax and scutellum bright red. Disc of thorax 

 irregular showing a tendency to approximate the orna- 

 mentation of Eros, the hind angles slightly prominent ex- 

 ternally. Elytra finely costate as usual in Plateros, the 

 intervals feebly reticulate. Body beneath more shining 

 than above. Legs black, anterior femora at base yello^^^ 

 Length, .20 inch; 5 mm. 



In the female the antenna? are shorter than in the male, 

 the joints 4 to 10 as broad as long. 



San Jose del Cabo and Sierra El Chinche 2,000 feet. 



