NORTH OF MEXICO. 



329 



Our species arc four in number and may be known by the characters of the following 

 table : 



Elytra oval, not produced at apex in % ; hairs shorter. 



1 lairs yellow. littoralis. 



Hairs black. 



Elytra densely muricately punctured. n i g ropilosa. 



Elytra less densely, and simply punctured. t e n e b r o s a . 



Elytra elongate oval, caudate in % ; hairs longer, yellowish ; an- 

 terior femur of % armed. c a u d a t a . 



A. 1 Uto rails, Esob., Zool. All. IV, p. 18, pi. 18, flg. (i. 



This species may be known by its smaller eye and by the yellowish hairs with which 

 it is clothed. The sides of the thorax are strongly rounded from the front to the; hind 

 angles, the latter being very obtuse. The thorax is also nearly as broad as the elytra. 

 The sculpture of the elytra consists of rather densely placed coarse punctures, the larger 

 of which are arranged in indistinct stria?. 



Length .'2(>-.34 inch. 



Abundant around the Bay of San Francisco. 



A. n i g ropilosa, Leo., Ann. Lye. V, 186. 



A pretty species, resembling, when deprived of its hair, Eleodes cordata. The sides of 

 the thorax arc very convex, but the hind angles arc quite distinct, the surface being rather 

 densely and. coarsely punctured. The elytra arc very broadly oval, slightly depressed, 

 and sculpture consists of dense muricate punctures without any tendency to their arrange- 

 ment in stria?. The hairs which everywhere rather sparsely clothe the body are black 

 and nearly erect. 



Length .36— .48 inch. 



Less abundant than the preceding, occurring in southern California, from Tejon to 

 to San Diego. 



A. tenebl'Osa, black, loss shining, and sparsely clothed with black erect hairs. Head rather coarsely and 

 densely but not continently punctured. Thorax broader than long, coarsely and moderately densely punctured; sides 

 strongly rounded, slightly narrowing behind; hind angles distinct, Elytra elongate oval, regularly convex with stria) 

 of large punctures closely plaoed, of which the interstices are less coarsely and irregularly punctured. Beneath black, 

 shining, coarsely but sparsely punctured. 



Length .40-.46 inch. 



Easily distinguishable from the preceding species, by its more elongate form and the 

 distinct strise of punctures of the elytra. The thorax is nearly as broad as the elytra, 

 while in the preceding species the elytra arc always more broadly oval, depressed above 

 and notably broader than the thorax. 



Two specimens collected by Mr. Gabb, in Lower California. 



AMEBI. PHILOSO. SOC VOL. XIV. — 83 



