210 GEO. H. HORN, M. D. 



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Male. — Anterior tarsi filiform : last ventral with a distinctly triangular notch 

 surrounded by a narrow margin. 



Female. — Tarsi slender; last ventral entire. 



This and sordidus are very closely related, and from my own observa- 

 tion can only be separated by the sexual character of the male abdomen, 

 which is itself very feeble. The differences given by Fauvel and others 

 are extremely slight, and rather illusory in view of the variability of 

 so7'didm in sculpture. 



This species is almost cosmopolitan. I have seen but few specimens 

 from our fauna from Massachusetts and the Middle States. 



I*, filicornis n. sp. — Formslender, black, elytra distinctly aeneous; antennae 

 as long as the head and thorax, piceous, joints 5-10 as wide as long; head sub- 

 quadrate, slightly longer than wide, hind angles not punctulate ; thorax very little 

 wider than the head, longer than wide; sides nearly parallel, dorsal punctures 

 three, equidistant, moderately deeply impressed; elytra wider than the thorax, 

 distinctly longer than wide conjointly, sparsely and 'rather finely punctured, 

 sparsely jjubescent; abdomen very sparsely and finely punctured, almost smooth 

 on the three basal segments ; beneath very sparsely punctured, the punctures more 

 evident than above. Length .22 inch ; 5.5 mm. 



Of this species I have seen but one female specimen, which I have uo 

 doubt should be referred to the present series by its extremely slender 

 tarsi. The elytral sculpture recalls that of mnhr<itilis. In general form 

 it resembles grandicollis and pnherulus of series B. From either of the 

 two preceding species it may be known by its more slender form, less 

 punctate elytra and very much smoother abdomen. I adopt the name 

 under which it was sent by Fauvel to Schwarz, but I can hardly perceive 

 any relevancy in the name. 



One specimen, Lake Tahoe, Nevada. 



P. inquietUS Erichs. — Brownish, rarely piceous, legs and base of antenna? 

 testaceous; anteunse a little shorter than the head and thorax, piceous, two basal 

 Joints testaceous, joints 4-10 as wide as long; head orbicular, slightly narrowed 

 behind the eyes, hind angles not punctulate; thorax oval, little wider than the 

 head, slightly longer than wide, somewhat narrowed in front, dorsal punctures 

 three, rather large, the posterior usually more distant; elytra a little wider than 

 the thorax, conjointly nearly square, coarsely and deeply, but not densely punc- 

 tured; surface shining, very sparsely pubescent; .abdomen less coarsely and more 

 sparsely punctured than the elytra; beneath more finely and sparsely punctured 

 than above. Length .20 inch ; 5 mm. 



Male. — Anterior tarsi filiform; last ventral with an extremely feeble emargina- 

 tion and a slight impression. 



Female. — Tarsi filiform ; last ventral entire. 



This species is by no means easy to separate from hepaticus, except 

 when males are at hand, and in the present species the distinctive male 

 characters are so feeble that they may readily escape observation. The 

 head is, however, somewhat larger in the male. 



