48 PROCEEDINGS OF THE AMERICAN ACADEMY. 



vertex, and that the antennae are generally much infuscated. Vertex 

 well rounded, slightly ascending; frontal costa sparsely and irregularly 

 punctate; eyes a little shorter, especially in the female, than the infra- 

 ocular portion of the genas, Pronotum with sharp and distinct carinas, 

 the i^rozona generally impuuctate except anteriorly and delicately, the 

 transverse sulci feeble, the principal sulcus angulate, especially in the 

 female, and situated distinctly behind the middle, the metazona densely 

 and rather finely punctate. The fuscous portion of the tegmina involves 

 the front margin of the discoidal area, but in the male leaves the distal 

 expanded half of the scapular area untouched, and in one female the dis- 

 coidal area is sparsely punctate with fuscous ; they are usually about as 

 long as the hind femora, but in the female are sometimes no longer than 

 head and pronotum together. Hind femora very slender, at least equal- 

 ling ( 9 ) or considerably surpassing ((^) the abdomen ; hind tibise red, 

 occasionally infuscated apically. 



Length of body, ^, 18 mm., 9i 24 mm.; antenna;, ^, 9 mm., 9? 

 8.5 mm. ; tegmina, (J, 9.5 mm., 9» ^ mm.; hind femora, S, H mm., 

 9 , 14.5 mm. 



15 (^, 9 9 . ]\It. Wilson, Altadena, Cal., 2400', July 27, A. P. Morse. 



5, A New Genus of Stenobothri. 



The North American Stenobothri may be sejiarated as follows : — 



a'. Antennae not ajjically clavate. 



b^. Face considerably oblique, straight or little rounded ; lateral foveola of vertex 

 slender; lateral lobes of pronotum longer than or fully as long as deep. 



ci. Fastigium with a distinct percurrent median carina ; antennae, at least in 

 female, depressed and more or less expanded basally. 



Ji. Antennae much expanded basally, tapering, in the male as long as the 

 liind femora ; lateral carinse of pronotum subparallel, the disk subrectangu- 

 lar ; prosternum tuberculate, especially in the male ; tegmina shorter than 



the abdomen Najmia McNeill. 



d~. Antennas feebly expanded basally, subfiliform, much shorter than the 

 hind femora ; lateral carinie of pronotum strongly sinuate, the disk clepsydral ; 

 prosternum not tuberculate ; tegmina longer than the abdomen. 



Iloresidotes gen. nov. 

 c^. Fastigium with no median carina, but at most a colored line, except some- 

 times in extreme anterior portion; antennfe filiform, the basal joints neither 

 expanded nor greatly depressed in either sex ; disk of pronotum clepsydral. 



Stenobothrus Fiscli. 

 6'^. Face little oljlique, strongly rounded ; lateral foveolse of vertex moderately 

 broad, never more than twice as long as broad ; lateral lobes of pronotum deeper 

 than long. 



