192 Journal New York Entomological Society. t^'"°'- xxx. 



sculpture and color that examined superficially they would promptly 

 be placed as but a single species. I am of the opinion, however, that 

 C. horni is entitled to stand as a valid species, even though I have 

 been unable to find any characters of apparent specific value other 

 than the rounded elytral apices, the somewhat feebly different second- 

 ary sexual characters of the terminal abdominal somites and the 

 rather dubious one of the form of the elytra ; these in the aggregate, 

 however, seem to be of sufficient weight to establish its specific 

 validity. It may be well to remark in passing that in all specimens 

 of C. horni that I have examined the median elytral fascia is quite 

 distinct, much more so than in C. calif ornica, and is of a more vivid 

 red than in the latter species. 



In order to facilitate comparison of the secondary sexual charac- 

 ters of the abdomen as observed in the male of C. horni and C. cali- 

 f ornica the following detailed descriptions are presented : 



Horni has the fifth dorsal distinctly sinuate at apex with a pair 

 of small, round, deep, medio-apical impressions (these perhaps ad- 

 ventitious) ; the sixth dorsal is much broader than long, its sides 

 feebly, evenly rounded to apex, the latter rounded with a deep triangu- 

 lar emargination at middle, giving the apex the appearance of being 

 bilobed, the surface is deeply excavated at middle from the apex to 

 about the middle of the segment (text-figure i). Fifth ventral 

 broadly, feebly rounded at apex, the latter with a small but distinct 

 excision at middle ; sixth ventral wider at base than the correspond- 

 ing dorsal, its sides nearly straight and strongly converging to the 

 truncate apex, which is a little shorter than the sixth dorsal, the 

 surface moderately and narrowly elevated medio-basally (text-figure 



2). 



Calif ornica has the fifth dorsal broadly arcuate at apex; sixth 

 dorsal one fourth broader than long, its sides a little more strongly 

 rounded than in horni, apex rounded with a deep sub-parabolic ex- 

 cision at middle, the excavated area at apex of this excision very 

 limited in extent (text-figure 3). Fifth ventral broadly rounded 

 at apex, the latter deeply triangularly emarginate at middle; sixth 

 ventral wider at base than last dorsal, its sides nearly straight, rather 

 strongly narrowing to the broadly arcuate apex, which is shorter than 

 the ultimate dorsal (text-figure 4). 



Cymatodera horni was founded upon a female specimen from the 



