96 GEO. H. HORN, M. D. 



The spinules which occur on the sixth ventral of the male are 

 rather long and directed obliquely outward, and not as in the pre- 

 ceding species directly backward. 



T. <Iebilis, n. sp. — Pitchy black, sides of thorax narrowly paler. Head 

 and thorax smooth, shining. Elytra as wide as long, moderately, densely 

 and coarsely punctured, not alutaeeous. Abdomen sparsely punctured, finely 

 alutaceous, beneath more distinctly punctured. Legs piceous, tarsi testaceous. 

 AntenniB piceous, apical joint paler. Length .10 inch; 2.5 mm. 



Male. — Last ventral deeply, triangularly notched, forming two plates as in 

 angustaius, sixth ventral broadly emarginate, the border narrowly spongy at 

 middle and at each end spinulose, face concave, the depression extending also 

 on the next two segments. Last dorsal tridentate, the middle tooth broad and 

 truncate at tip, pellucid along the micUlle, (fig. 11, a, b). 



Female. — Last ventral similar to that of mimus with the middle lobe some- 

 what broader. Last dorsal with three slender, equal processes, the middle 

 truncate at tip, (fig. 11, c, d). 



Three specimens collected by Mr. G. 11. Crotch, at Crystal Springs, 

 California, and at Vancouver. 



This species resembles nitididoides in form and sculpture, but the 

 % of the latter has scarcely any emargi nation of the sixth ventral 

 and no depression, while the females difler still more in their sexual 

 characters. In the specimen % before me the spinules of the sixth 

 ventral have been accidentally lost, there remain however the deep 

 perforations in which they were inserted. A specimen in Mr. Hike's 

 cabinet is perfect. The last dorsal if seen by transmitted light ap- 

 pears quadridentate owing to the middle of the central tooth being 

 thin and translucent. 



T. repandus, n. sp. — Piceous shining, sides and base of thorax paler. 

 Head and thorax very finely alutaceous, scarcely visibly })unctulate. Elytra 

 as broad as long, finely alutaceous, obsoletely finely punctulate. Abdomen 

 sparsely punctulate at the sides of the penultimate dorsal, the segments all 

 longitudinally wrinkled at middle, not alutaceous, beneath as above. Antennse 

 long, slender, piceous, two basal joints paler. Legs testaceous. Length .18 inch ; 

 4.5 mm. 



Male. — Last ventral as in iacla/poroides, sixth very deeply emarginate, and 

 on each side sinuate, the emargination entirely filled with rather long stout 

 spinules. Last dorsal as in tachi/poroides, (fig. 12, a). 



Female. — The last dorsal is deeply divided into four slender processes, (fig. 

 12, b). 



This species greatly resembles scrutator but is darker in color and 

 with different sexual characters The spinules in the emarginatiou 

 of the sixth ventral are comparatively long and stout; there is also a 

 depression of the face of the segment close to the margin but no 

 evidence of granules. 



Three 'S , one 9 > I-'Ouisiana, Ulke; Michigan and Trenton Falls, 

 New York, Dr. Schwarz. 



