AMERICAN COLEOPTERA. 113 



black, sliiiiing, with tlie elytra very slightly brownish. Sexual charac- 

 ters % as in pi ivju is, feinile unknown. Lcnj^th .32 inch; 8 mm. 



Specimens were collected by Mr. Jas. Lockhart at Abittibi House, 

 Hudson's Bay Territory, and kindly sent nie by 3Ir. Tuwneud Glover, 

 of Washington. 



A. hamatus, Say, Long's Exped. ii. 277; Am. Eutomol. Edit. Lee. l,18:i; 

 a»[/u/ari.f. Lee. Agass. Lake Super, p. 22;') ; Sagittarius, Harold, Ann. Ent. Soc. 

 France, lS(iO, 615; Borl. Zeitsclir. 1802, 10:5. 



The description of Say is by no means characteristic and may with 

 equal propriety be referred to several of the species of the group. 

 Harold (Catalogus p. 1049,) has admitted the synonymy of liCconte's 

 species with Say's (suggested as probable by Keconte himself Jjist. p 

 3 i) and with this before me I have no doubt whatever of the identity 

 of soi/i(fariiis and ani/it/aris. Harold's description is exactly equiva- 

 lent to the typical specimens of Leconte. 



This species may be distinguished frona all of those now known by 

 the very (for this group) convex elytral interspaces and the rather 

 closely and often crenately punctured stria;. The thorax is sub-quad- 

 rate, sides very feebly rounded, basal edge distinctly margined at the 

 sides. The coarse punctures are more numerous in this species and 

 more densely placed towards the sides and base and with no fine punc- 

 tures. The head appears unusually small, by the gena) being very 

 little prominent and obtusely rounded. The anterior tibijB have the 

 outer edge above the upper tooth simple and not at all serrate. Length 

 .27 — .30 inch; 7 — 7.5 mm; (3 — 1] lines, Harold.) 



Lake Superior, Illinois, Dacotah and Oregon ? (Harold.) 



A. hyperboreus, Lee. Agass. Lake Sup. p. 225; omissus, Lee. loc. eit. concavus 

 JHald. Juurn. Acad. Ser. ii, vol. i, p. 1(I3. 



Similar in form to pinguis. Color black, shining, elytra occa- 

 sionally entirely or with the base and sides only brownish. Head 

 smooth, with but few coarse punctures in front. Thorax with distant 

 coarse punctures over the entire surface, very sparse on the disc, more 

 abundant toward the sides and base, and with very few of the finer 

 punctures as described in pitu/iiis ; basal edge with .scarcely any trace 

 of marginal line. Elytra as in piixjuis ; striic faint, scarcely punc- 

 tured, interstices flat, usually inqiunctured. ('olor beneath as in 

 2)iii(jnis. Anterior tibise with outer edge serrate above upper 

 tooth. Sexual characters as in jiiin/m's, but with tlie first joint of 

 hind tarsus of male less developed. Length .24 — .32 inch; G — 8 

 mm. 



In the series before me I am unai^le to separate the species de- 



