north american coleoptera. 95 



Unidentified Species. 



26. I^. loiigicornis Mann. Bull. Mosc, 1843, II, p. 30.3. 



I have not been able to find this species — which was described by 

 Mannerheim from Sitka — for the reason that I have had no specimens 

 at all from that region under examination. The .statement made in its 

 description, "antennae corporc mvlto lougioj-es," coupled with the well- 

 known accuracy of Mannerheim, would seem, however, to leave no doubt 

 of its reality. 



LiATHROPUS El. 



Differs from the preceding in the following characters : 



The antennae are very short; joints one and two large, three to eight very small, 

 nearly globular and sub -equal, nine to eleven larger, sub-equal and forming a 

 loose club. Th'e spurs of the front tibiae are very minute and nearly equal. Fifth 

 joint of tarsi nearly double the length of all the others. Form generally a little 

 more convex. 



Perhaps the most remarkable difference is in the sculpture, which can 

 be very conveniently studied on the head of rernalis, it being glabrous. 

 I found the head, under high power, to be covered with minute elongated 

 markings, the nature of which could not at first be determined. By 

 chance the light was coming very obliquely, and it could be seen that one 

 side of the markings was in deep shadow, the other being brightly illu- 

 minated. The dark side was that which was farthest from the source of 

 light, and proved the ornamentation to consist of small, elongated eleva- 

 tions; this form of sculpture is apparently uni(pie in our Cucujidae. 



The antennae are very different in structure from any in Lsemophlcens, 

 and the terminal joints do not .seem to be flattened. The prothorax is 

 transverse, a little longer than the head, with the sides arcuate and un- 

 dulated. There does not appear to be any appreciable sexual difference. 



Our species are very small and ((uite uncommon : they may be tabu- 

 lated as follows : 



(Jdloi- uniform : l)ody glabrous above 1. voriialis. 



Elytra mottled witii large patches of a paler tint; surface covered with exceed- 

 ingly short and sparse setae 2. pictuiii. 



Color uniform: entire body covered witii rather long and dense pubescence. 



:>. pube!«ceiiM. 



1. El. vernaHs Lee.— Form moderately elongated, convex. Body dark, blaek- 

 isii castaneous, legs, front of head, labrum,and first eight joints of antennae paler. 

 Surface above glabrous. Head and prothorax ornamented with snjall, elongated, 

 closely approximate elevations; elytra punctato-striate, punctures large. Head 

 small; eyes ratiier large, convex and in advance of posterior angles. Prothorax 

 much wider tiian liead. I)niader tlian long, convex: anterior mars^in arcuate; 



