442 CALIFORNIA ACADEMY OF SCIENCES. 



ng the form oiforiin'dolosiis, but differs from either spe- 

 cies by the absence of the lateral sulci of the rostrum. 

 Sierra El Chinche, Pescadero and San Jose del Cabo. 



Rhigopsis simplex n. sp. 



General form of R. cffracta and recalling the facies of 

 some juacrops, clothed with dirty white, broadly oval 

 thin scales, the middle and sides of thorax darker and 

 with series of darker spots on the elytra. Beak with fine 

 median sulcus extending from apex to occiput, lateral 

 sulci scarcely evident. Thorax broader than long, widest 

 near apex sides straight and slightly convergent behind, 

 a slight post -apical constriction, disc very coarsely and 

 deeply punctured, a vague median depression. Elytra 

 regularly oval, disc convex the suture and two discal 

 cost^ feebly elevated without tuberosities, the intervals 

 with stride of coarse punctures almost entirely concealed 

 by the broad leaf-like scales. Body beneath with brown- 

 ish-white scales. Length, .18 inch; 4.5 mm. 



As in cffracta the surface has short, semi-erect curved 

 hairs, sometimes concealed by the surface exudation. 

 This species may be known from cffracta by the absence 

 of tuberosities, the feeble elytral costee and the almost 

 entire absence of lateral rostral sulci. 



Calm alii Mines. 



An examination of my series of R. cffracta shows that 

 R. scntcUata Cas. (Ann. N. Y. Acad., 1888, p. 242) can- 

 not be retained as distinct, the species having doubtless 

 been described from females. The scutellar character 

 has no value, as several of my specimens have the scutel- 

 lum entirely concealed by the elevations near it. 



Geodercodes hispidus n. sp. 



Oblong, piceous, densely dotted with brownish scales 

 with paler scales intermixed on the disc, at sides the 



