H. C. FALL. 99 



except sculpture, the punctuation of elegans being much 

 sparser and finer. Elegans has thus far been found only in 

 salt pools or springs, while lodingi occurs in fresh water 

 creeks as I am informed by its discoverer. 



C. ellipsis n. sp. 



This name is proposed for a form closely related to elegans and 

 lodingi, agreeing with them in antennal, sternal, and crural characters 

 The sides of the prothorax are not distinctly paler, being but feebly 

 and diffusedly so at the extreme margin ; the elytra are paler at sides 

 but not very evidently so basally, and the pale border is nowhere 

 sharply defined as it always is in elegans and lodingi. The punctuation 

 is finer than in either of the two allied species, being on the head and 

 thorax exceedingly fine and remote. The size is apparently slightly 

 smaller and the form just visibly more convex. Length, 1.8-2.2 mm. ; 

 width, 1-1.2 mm. 



Described from two examples given me by Mr. Schwarz 

 by whom they were collected at Hot Springs, Arizona. 



Var. nanus n. var. 



Several specimens from Capron and Lake Harney, Fla., 

 recently sent for examination by Mr. Schwarz are exceed- 

 ingly closely allied to the typical Arizona specimens of ellipsis, 

 but differ constantly in their smaller size ; the elytral punc- 

 tuation seems also relatively a little coarser ; for these the 

 above varietal name may be used. Length, 1.6-1.8 mm. ; 

 width, .8-.9 mm. 



C. reductus n. sp. 



Elliptical, four-fifths longer than wide, rather strongly convex, pice- 

 ous black, surface at most very faintly aeneous; sides of prothorax nar- 

 rowly, gradually diffusedly paler, sides of the elytra toward the apex 

 similarly but more broadly so. Antennae 7-jointed. Head and pro- 

 thorax polished and very finely and sparsely punctulate ; elytra more 

 evidently and more closely punctate, the punctures toward the sides and 

 apex separated by their own diameters or a little more, somewhat finer 

 and sparser on the disk basally, surface between the punctures dulled 

 by the presence of a system of ground sculpture consisting of very fine 

 punctures and short irregular lines. Beneath opaque, hind femora 

 stout, glabrous, shining, with a few fine scratches toward the base. 

 Prosternum carinate ; mesosternal keel not very strongly developed, 

 the free angle conical and acute. Length, 1.6-1.8 mm. ; width, .9-. 95 

 mm. 



TRANS. AM. ENT. SOC, XXXVI. MAY, 1910. 



