FALL AND COCKERELL. 219 



■ New Mexico (Ronieroville). Numerous specimens taken by Prof. 

 Cockerel], to whom it giv^es me pleasure to dedicate the species. 



By Hayward's table cockerelli would fall next to dolosus, from 

 which it differs by its slightly darker color, more transverse pro- 

 thorax and pluri-striate elytra. The posterior dorsal puncture seems 

 uniformly farther behind the middle of the elytra than in dolosus. 



STAPHYLINID^. 



Staphyliniii!) ino«IestiiS n. sp. — Most nearly allied to fossator and cinnu- 

 mopterus, with the latter of which it agrees closely in form and size. The color 

 is nearly uniformly black in mature specimens, the tihise and tarsi brownish, but 

 in some examples the elytra are in part obscurely ferruginous. Head subtrian- 

 gular, nearly equal in width to the prothorax. sides feebly convergent in front ; 

 prothorax not at all narrowed anteriorly, densely not coarsely punctate and with 

 only a slight trace of a smooth median line near the hind margin. Abdomen 

 without well-defined double line of velvety spots, which are, however, very 

 faintly indicated in some specimens. Length 11-12 mm. ; width 2.25-2.5 mm. 



New Mexico, Santa Fe (Fenyes), and Las Vegas (Cockerell). 



As compared with fossator, modestus is a distinctly smaller and 

 more slender species, the sculpture a little finer, median smooth line 

 of pronotum almost completely wanting, sides of prothorax more 

 nearly straight and not at all convergent in front (usually more or 

 less obviously so in fossator), elytra entirely without violaceous tint 

 or apical spots. From cinnamopterus, modestus differs in its finer, 

 much denser punctuation of the prothorax, as well as in color. 

 Tomentosus is also nearly allied, but in this the color is perfectly 

 black throughout, the pubescence blacker, and the velvety spots on 

 the upper surface of the abdomen are conspicuous. 



ElJyESTHETlJS Grav. 

 The discovery of a species of this genus at Las Vegas by Prof. 

 Cockerell is notable as being the first instance of its occurrence in 

 the Rocky Mountain region. The species are all minute, difficult 

 to separate, because of the lack of salient characters, and are poorly 

 represented in the majority of collections. The .species described 

 below is one of the largest in the genus, being equaled in size only 

 hy pun'ctulatus according to Casey's measurements, and there can be 

 little doubt that it is quite distinct from any of the eastern species. ■ 



E. neoniexieaiins n. sp.— Form rather robust, color uniformly rufocasta- 

 neous above, the metasternum darker. Head across the eyes subequal in width 

 to the prothorax, the latter of the usual form and widest slightly in advance of 



TRANS. AM. ENT. SOC. XXXIII. JUNK, 1907. 



