108 GEO. H. HORN, M. D. 



the thorax, coarsely and moderately deeply, but not closely punctate ; presternum 

 without elevated lines; metasternum sparsely punctate at the sides, the meso- 

 coxal line feebly curved, joining the suture one-third from the front. Abdomen 

 sparsely punctate, the metacoxal line forming a complete arc veiy little broader 

 than long and nearly as long as the segment. Legs l)lack or piceous. Length 

 .06 inch. ; 1.5 mm. PI. 11. fig. 2. 



In the male the last ventral is feebly eniarginate at tip. This 

 species varies a little in the size of the red elytral spot. In one 

 specimen before me from Texas the spot extends obliquely to the 

 suture. The absence of the prosternal elevated lines seems to relate 

 this species to the forms with the incomplete metacoxal arc. 



I have in my cabinet one specimen in which the elytra are entirely 

 black without spot. Its other characters are those of piiticfaiKfi. I 

 feel unwilling to separate it as a distinct species, inasnmch as the 

 Canadian specimens show quite a variation in the .size of the elytral 

 spot. The specimen is from Eagle Harbor, Lake Superior. 



H<ib. — Canada, Pennsylvania and Texas. 



S. conifferaruiii Crotch. — 01)long oval, fully one-half longer than wide, 

 black, anterior angles of thorax pale, elytra reddish, black along the base and 

 two-thirds of the suture and sides. Head sparsely punctate. Thorax slightly 

 narrowed in front, sides very feebly arcuate, surface sparsely indistinctly punc- 

 tate-. Elytra a little wider at the base than the thorax, sparsely punctate ; pro- 

 sternal elevated lines well marked, parallel and entire ; metasternum s])arsely 

 jmnctate at sides, the mesocoxal line feebly arched joining the suture one-fourth 

 from the front. Abdomen sparsely punctate, metacoxal line fonuing a complete 

 arc, two-thirds the length of the segment. Legs black. Length .06 — .08 inch. ; 

 1.5 — 2 mm. 



The only variation observed is in the extent of the red coloration 

 of tiie elytra. Sometimes they are entirely red, or the ba.se and two- 

 thirds of suture and side margin piceous, or the piceous may extend 

 to the apex along the suture and .side thus enclosing a large oval 

 discal spot. A specimen from Veta Pass, Col. (Schwarz), has the 

 thorax entirely black and the legs reddish. This may be a distinct 

 species, but the material at hand is not sufficient to establish it. 



Hah. — California from Tahoe and Alameda south to San Bernar- 

 dino, Nevada, Colorado, Veta Pass. 



Synonymy and Bibliography. 



SCYMNUS Kug. 

 S. balteatus Lee, Proc. Am. Philos. Soc. 1878, p. 399. 

 S. bigemmeus n. sp. 

 S. Liebecki n. sp. 

 S. myrmidon Muls.. Si)ec. Sec. p. 9154. 



