168 AMERICAN COLEOPTERA. 



in having the craterform punctures of the elytra strongly developed 

 and rather crowded. In this sex, the fifth ventral is as long as the 

 fourth, broadly depressed posteriorly at middle, the apex finely 

 beaded with shallow but broad emargination. 



Readily distinguishable in both sexes, from all our other species 

 of Tanarthropsis by the peculiar disposition of the pubescence in 

 the postscutellar region. In the Ulke collection, now in the Carne- 

 gie Museum, this species is labelled salinus Lee, with which it 

 agrees in no essential particulars. 



There is no salt or alkaline lake in the neighborhood of Hol- 

 brook and Winslow, where I collected the species in moderate num- 

 bers. While I have no field notes bearing directly on the matter, 

 my belief is that the beetles were found hiding under drying cow- 

 dung along the river bars. 



T. iiubifer Casey. — Narrow, parallel, depressed, dull, elytra paler, less 

 dull ; pale rufo testaceous, abdomen above aud beneath blackish. Elytra with a 

 common scutellar spot and another on each behind the middle, blackish. Pubes- 

 cence short, decumbent, rather close, even, longitudinal in direction on the 

 elytra. Elytra short, one-half longer than wide, connate throughout, the sides 

 parallel, not wider behind the middle than at base, punctures fine and dense, 

 craterform punctures wanting. Length 3 mm. 



I have not seen this species, which should easily be recognized by 

 the shorter, connate, parallel elytra. It is described from Great 

 Salt Lake, the female only being known. A specimen of Tanar- 

 thropsis in my collection from Honey Lake, California, has short, 

 apparently connate non-dehiscent elytra, but they are distinctly 

 broader behind the middle and the craterform punctuation is dis- 

 tinct. I pi-efer not to give it a name at present. 



T. Tirginalis n. sp.— Narrow, less depressed than usual, faintly shining, 

 rufoteslaceous, the elytra paler, very slightly infuscate at base and with faint 

 indication of marginal postmedian cloud, abdominal segments blackish beneath. 

 Pubescence rather short, pale, subdecumbeut, not close on the elytra. Head sub- 

 quadiiite, base truncate, tempora moderately long, nearly parallel but slightly 

 aicuate and a little less prominent than the eyes, median basal impression obso- 

 lete, almost wanting; sculpture consisting of a distinct intricate reticulation sur- 

 rounding well-defined subareolate shy^llow punctures, which are regularly dis- 

 l)osed and separated usually by considerably less than their own diameters. Con- 

 striction of the eleventh antennal joint much less marked than usual. Pro- 

 thorax of the usual shape, slightly narrower than the head, sculpture similar to 

 that of the head but distinctly deeper, the punctures distinctly areolate, basal 

 margin and collar well defined and strong. Elytra broader than the prothorax, 

 pubescence directed longitudinally, craterform punctures distinct, separated on 



