338 Goleopterological Notices, VII. 



rowly declivo-convex near the sides, the striae rather fine, im- 

 pressed, somewhat discontinuous, especially toward the sides, 

 where, contrary to the general rule, they are less impressed -^^ 

 punctures moderately coarse and somewhat uneven ; intervals 

 slightly convex and even throughout. Length 13. 0-13.7 mm.; 

 width 5.0-5.5 mm. 



California (near Monterey). 



The intercoxal plate of the mesosternum seems to vary greatly 

 in different individuals, in the female described above being more 

 elongate than usual, convex and without elevated margins, while 

 in another specimen, which is seemingly its male, the plate is 

 rounded and deeply concave. The anterior tarsi of the male are 

 extremely feebly dilated, with the pubescent pad of the first joint 

 very small and apical. A female from Santa Cruz seems to indi- 

 cate a variety or perhaps a closely allied species, with larger elytra,, 

 narrower base of the prothorax and more obtuse basal angles. 



Although similar to the others in general organization, this 

 species departs remarkably in facies because of the depressed 

 elytra, w^hich are more abruptly rounded at base and more gradu- 

 ally pointed at apex. It represents as distinct a group as mar- 

 ginatus, and there are possibly several closely allied forms in- 

 cluded at present in our cabinets. 



PEMPHUS Motsch. 



The species of Pemphus are much less numerous than those of 

 Brennus, but inhabit the same faunal regions ; thej'^ are, however, 

 more boreal, and do not extend to the southward further than the 

 northern parts of California. The}^ are distinguished by the feeble 

 and subeffaced sculpture of the elytra, the latter being much 

 more depressed toward base, narrower and elongate form of body, 

 longer legs, and by the spinose and not pubescent inner lobe of 

 the maxilla. Owing to the relativelj'^ much more elongate ab- 

 domen of the female, the femora extend only to the tips of the 

 elytra in that sex ; in the male they extend far beyond the el^^tra. 



The three species before may be readily distinguished among 

 themselves as follows : — 



Basal joint of the anterior tarsi in the male densely pubescent beneath almost 

 throughout its entire extent; prothorax widest and broadly rounded at. 

 the sides far before the middle; sides of the elytra reflexed and with 

 coarse punctures. 



