[39] NORTH AMERICAN COLEOPTERA. 195 



Jias simple antennas and lacks the sensitive oval patch on 

 the declivity of the vertex. 



R. deformata Lee. — Three specimens of this species were 

 taken at Paraiso Springs, Monterey Co. The antenna is 

 figured on the plate; the abnormally large second joint is 

 excavated and coarsely punctured beneath. 



SONOMA n. gen. (Euplectini.) 



The following genus belongs near Faronus and Sagola, 

 with apparently much greater resemblance to the latter. 

 The species thus far described belong to the Pacific Coast 

 fauna, and were placed by Dr. LeConte in Faronus. The 

 diagnosis may be given as follows, the general characters 

 being those of the Euplectini. 



Posterior coxas contiguous; tarsi with two eqnal claws. Antennas ratber 

 distant at base, feebly but distinctly clavate; first joint much louger thau the 

 secoud. H-ad slightly sin iller than the prothorax, with three nude fovea? 

 not connected, the two posterior small, the apical large and very deep; genas 

 not at all prominent, rounded. Protborax with two small discal foveas before 

 the middle, a very large, deep, widely dilated basal fovea, and one at eacli 

 side not connected. Elytra with sutural strias; discal deep and broad, short, 

 basal. First segmeut of the abdomen very short, shorter thau the second or 

 third, coriaceous above, corneous beneath, without basal cariLie; second seg- 

 ment having an apical transverse line of finely spongiose sensitive surface 

 which is interrupted in the middle. Tarsi rather short. Eyes well developed. 

 Body very depressed, linear. 



The head is not carinate beneath, but has a deep trans- 

 verse groove just behind the mentum and maxilla?. The 

 elytra are mucli longer than the prothorax, depressed. The 

 Hanks of the elytra are norm d. The middle coxa? are sub- 

 contiguous, separated by a very narrow carina. 



The genus Sonoma is distinguished from Faronus by the 

 form of the geme and the short basal segment of the abdo- 

 men; from Sagola Sharp it differs in its less approximate and 

 less prominent frontal tuberculations, and especially in the 

 structure of the antennae, which are in Sagola not at all clav- 



