[97] NORTH AMERICAN COLEOPTERA. 253 



In the Californian species of Lintnichus, the prosternum is 

 very long, prolonged between the coxse, the apex of the 

 process being strongly rounded and entering a deep emar- 

 gination of the mesosternum ; along the middle the surface 

 is deeply grooved. The first two ventral segments are sub- 

 equal in length, the first three connate. The first four joints 

 of the anterior tarsi are short, equal and together but slightly 

 longer than the fifth. The antennae are eleven-jointed; club 

 loose, three-jointed, joints gradually increasing in thickness; 

 first joint, as in Ditaphrus, deeply seated in the lateral ex- 

 cavation of the front. 



I have carefully verified this observation regarding the 

 number of antennal joints in three or four species of Limni- 

 chus and several specimens of Ditaphrus, and can state with 

 great certainty that the antennas are not 10-jointed, as rep- 

 resented (Class. Col. N. A., LeConte and Horn pp. 159, 

 161). DuYal had already corrected this error in his classic 

 work on the genera of European Coleoptera (Vol. II, p. 267 

 foot-note). 



ELEATES n. gen. (Tenebrionidae). 



Body oblong, strongly convex. Epistoma and sides of the front coarctate 

 at apex, very broadly and evenly arcuate; front distinctly dilated before the 

 eyes; the latter small, completely divided by the lateral edges, more than 

 their own length in front of the prothorax; epistoma transverse, enclosed by 

 the front; suture distinct and impressed in the middle. Maxillary palpi 

 scarcely at all dilated; third joint distinctly longer than wide, slightly shorter 

 than the second; fourth twice as long as wide, distinctly longer than the 

 second, subcylindrical, slightly bent and compressed, obliquely truncate at 

 tip. Labial palpi rather small; third joint most robust, longer than the first 

 two together, ovoidal, narrowly and obliquely truncate at tip. Mentum mod- 

 erate, wider than long, its plane below the general surface of the head; ligula 

 large, strongly and broadly bilobed; lobes almost entirely exposed. Maxilla? 

 exposed at the sides. Antenna) gradually and very strongly incrassate, very 

 strongly compressed; second joint globular, one-half as long as the third; 

 the latter longer than the succeeding joints; four to seven, densely spongiose 

 at the exterior apical angles; the remainder more extensively so and at both 

 apical angles; joints more strongly pointed outwardly than on the inside; 

 five to ten transverse, the latter very strongly so; eleventh large, as wide as 

 the tenth, as long as wide, obliquely conoidal; antennal grooves deep near 

 the eyes, obliterated in the middle. Anterior coxa) transversely oval, 



18— Bull. Cal. Acad. Sci. II. 6. Issued November 27, 1886 



