2O2 MEMOIRS ON THE COLEOPTERA 



A Body and abdomen black, the legs as in the preceding, the prothorax 

 wholly bright rufous; antennae piceo-testaceous, longer than the 

 body in the male; head nearly similar; prothorax relatively much 

 narrower, more decidedly elongate, the sides more rounded and 

 less prominent, the punctures minute and sparse; elytra gradually 

 cuneiform, long, obtuse at apex, punctured as in vibex and with a 

 nearly similar vitta, except that it is attenuated, gradually disap- 

 pearing near the apex. Length (cf ) 6.5-7.2 mm.; width 1.6-1.8 



mm. Indiana fragilis n. subsp. 



6 Black throughout the body, abdomen and elytra, the antennae very 

 slender, blackish, testaceous basally; tempora but feebly narrowed 

 behind the eyes; prothorax of the usual form, minutely, sparsely 

 punctate, about as wide as the head in both sexes, rounded at the 

 sides; elytra rather broad, parallel ( 9 ) or narrower though only 

 feebly cuneiform (d 71 ), deeply, rather coarsely but not densely 

 punctate. Length (cf 9 ) 6.5-8.2 mm.; width 1.8-2.3 mm. Canada 



and Wisconsin, [allecta Newm.] sphaericollis Say 



A Similar in almost every feature, except that the body is slightly 

 broader in form, the prothorax entirely bright red and differing 

 more especially by the form of the latter, which is narrowed more 

 strongly at apex, with the convex intermediate portion more trans- 

 verse. Length (9 ) 8.8 mm.; width 2.6 mm. Canada, [pauper- 

 cida Newm.] ruficollis Say 



The difference in antennal structure and form of the prothorax 

 between the females of lineicornis and Iceviceps is very remarkable. 

 Just what the true relationship between fragilis and vibex on the one 

 hand, and ruficollis and sphcericollis on the other, may be, I have not 

 material enough at present to determine. There is a remarkable 

 constancy throughout the genus in the peculiar coloration of the 

 legs, pale with the hind femora alone black at apex, although in 

 both ruficollis and sphcericollis, the other legs become also partially 

 dusky, and in aurata they are entirely pale. 



Centrodera Lee. 



The type of the following species has been in my cabinet as the 

 male of nevadica Lee., with a query, for many years ; but, as it appears 

 to be different, it should take a more specific name as follows: 



Centrodera oculata n. sp. Elongate, moderately convex and shining, 

 clear red-brown throughout, the legs and antennae concolorous, except 

 that all the joints of the latter after the fourth are deep black apically, 

 the last joint with an ante-apical black band; pubescence rather long, 

 ashy, sparse and decumbent; head a little wider than the prothorax, 

 the eyes very large and convex, coarsely faceted and separated by barely 

 half of their own width; antennae long and slender, about as long as the 



