362 MEMOIRS ON THE COLEOPTERA 



elytra rather less elongate, the prothorax somewhat less transverse, 

 only about a third wider than long; legs more slender and much 

 longer, the hind femora extending well behind the elytra in the 

 male and the hind tarsi longer and more slender, with the basal 

 joint almost twice as long as the remainder, shorter in the female, 

 the femora extending barely to the elytral tips. Length (cf, 9) 

 11.5-12.0 mm.; width 3.5-3.6 mm. California (locality unrecorded). 



longitarsis n. sp. 



Of undulatus I have at present five examples, all males, and have 

 not seen the female; these five males exhibit considerable incon- 

 stancy in the pubescence of the elytra as stated, but in no other 

 respect, except that the two examples having no scattered hairs 

 and no vestige of longitudinal rays, have on the whole, slightly 

 narrower and more elongate elytra; as these longitudinal rays 

 are not mentioned by Say in his description we can legitimately 

 regard the unrayed and more slender form as undulatus and the 

 rayed form, with slightly shorter elytra, as the variety interruptus 

 of Laporte and Gory; further light gathered from larger series is 

 needed however. 



Of a form of nauticus, which I construe to be gramineus Hald., 

 because of its slightly broader elytral markings, accompanied by 

 more obvious pallid lines of the integument, there is in my cabinet 

 a single female example from southern Oregon.* In this species 

 the head in the male has two separated areas of minute, densely 

 dull sculpture, which are wholly wanting in the female, and in 

 the latter sex the pronotal granules are coarser and more trans- 

 versely carinuliform than in the male; nauticus varies enormously 

 in size as in some other species of this genus as well as Neodytus. 



In the sagittatus group there is a loosely and pallidly pubescent 

 sutural line, accompanied for the most part by pallid integument, 

 from the elytral base to about apical third, with two short trans- 

 verse offsets, one near two-fifths, the other at about two-thirds 

 from the base ; the elytral truncature is limited externally by a 

 distinct spine and the prothorax is generally a little longer than 



* I have before me a single male labeled "Michigan," which is more parallel in 

 form than nauticus or gramineus, but which has the same rather broad pallid lines of 

 the integument as the latter; it is probably the male of gramineus, though I have seen 

 no reference to so extended an easterly range of distribution. The densely dull cephalic 

 patches of this male are triangular and more clearly separated anteriorly than in 

 nauticus; so it may be that gramineus should be considered specifically different from 

 the latter. 



