72 ENTOMOLOGICAL NEWS. [Mar., '06 



placed, becoming quite irregular at the periphery, rather coarse and 

 slightly impressed. Abdomen parallel and about as wide as the elytra, 

 surface throughout extremely finely rugulose. 



Male. (Fig. 3 of plate). With the sixth segment at apex rather deeply 

 emarginate, bottom of the emargination rounded, sinus about as wide as 

 deep, sides divergent, angles rounded and with a narrow membranous 

 margin ; surface at apical two-thirds with a large median oblong-oval 

 impression, the latter set with small, short, black chitinous points, the 

 sides of the concavity fringed with sparsely set inwardly curved hairs, 

 the concavity is continued to the segmental base by a broad, glabrous, 

 shallow groove. The apex of the fifth segment is more or less slightly 

 sinuate at middle ; surface marked with a broad, shallow, glabrous longi- 

 tudinal groove, which passes at middle third into a rather broad circular 

 concave impression that is glabrous and guarded laterally and pos- 

 teriorly by two small, short, black chitinous, obtuse and more or less 

 incurved tubercles. The groove at apex has a few scattered hairs. 



Female With the sixth ventral broadly and obtusely rounded at tip, 

 and apparently with a minute triangular impression at middle. The fifth 

 ventral is unmodified. Measurements $. Length, 8.0 mm.; width i.o 

 mm. 9 Length, 7.0 mm.; width, i.o mm. 



Hab. Shasta Retreat, Siskiyou Co., California ; elevation, 

 2,416 feet. 



A large series of this species was taken by sifting along the 

 banks of the mountain streams in July, at the above-named 

 locality. The secondary sexual characters are sufficiently dis- 

 tinct to justify my describing it as new. I cannot refer it to 

 any of the species described by Maj. Casey from single fe- 

 males. In some points it appears close to validiceps. Species 

 possessing a community of habitus should not be founded upon 

 females when the male characters are taken as the criterion. 



I take pleasure in dedicating the present species to Maj. 

 Thos. Casey in recognition of many favors, and also that his 

 name may occur among the many that he has so aptly de- 

 scribed. 



In the plate I have figured other species for comparison. A 

 work to be truly valuable should have all of the species figured 

 in some way or another ; no words can convey to the mind of 

 the student the details of morphological characters like a cor- 

 rect drawing or even a simple diagram. 



Figure 4 of the plate shows the secondary male sexual char- 

 acters of what I recognize as L. puncticcps L,ec., although not 



