350 FIELD MUSEUM OF NATURAL HISTORY ZOOLOGY, VOL. VII. 



thorax; humeri distinct; sides straight, slightly divergent to about 

 the middle, thence arcuate to apex; broadest at apical one-fourth; 

 the apices sinuate, the sutural angle prolonged (9), or conjointly 

 rounded, the sutural angles not prolonged (cT); disk feebly convex, 

 with striae of quadrate punctures, arranged in pairs, becoming ob- 

 literated behind the middle; scutellar region depressed; surface 

 sparsely pubescent; lateral margins at middle with a very obscure 

 and vaguely limited testaceous maculation. Body beneath rather 

 densely and moderately coarsely punctured; abdomen more sparsely 

 punctured. Length, 9.5-12.5 millim. 



Male. The fifth ventral segment truncate; last ventral shorter 

 than last dorsal, equally as long as broad, deeply triangularly emar- 

 ginate at apex, the angles very acute, impressed at base, and at 

 middle a transverse lunate impression ; fifth dorsal feebly triangularly 

 emarginate at apex; last dorsal one-third longer than broad, strongly 

 narrowed to apex, the apex triangularly incised and longitudinally 

 impressed at middle. 



Female. Fifth ventral segment very feebly emarginate at apex, 

 longitudinally broadly depressed from base to near apical margin, 

 the margin elevated, last ventral semicircular, wider than the last 

 dorsal, feebly depressed at apex; last dorsal feebly impressed at tip, 

 apex nearly truncate. 



This species is allied to californica, hopei, and horni, agreeing 

 with these in having the elytral striae arranged in pairs, the alternate 

 intervals broader, the last ventral segment broader than the last 

 dorsal and a similar structure of antennae. It differs from all these 

 in color, in the much smaller size and the form of the terminal ab- 

 dominal segments; also by having the prothorax proportionately 

 broader and the elytra more coarsely striate. 



San Bernardino Ranch, Cochise county, Arizona, 3,750 ft. el. 

 August. Collected by and named in remembrance of the late Dr. Fran- 

 cis Huntington Snow. Type in entomological collection Kansas 

 State University. 



Cymatodera aethiops sp. nov. 



Slender, piceous, brown; head, apex of thorax, an indistinct median 

 elytral fascia, meso- and metasternum, knees and tibiae at apex ob- 

 scurely testaceous; antennae, palpi, labrum and tarsi pale testaceous; 

 moderately clothed with short, erect pubescence with long sparse hairs 

 intermixed. Head coarsely and densely punctate, eyes moderately 

 prominent. Antennae slightly longer than head and thorax, rather 



