124 GEORGE n. HORN, M. D. 



Abuudant along the Pacific slope from San Francisco to Van- 

 couver. 



A. leopardus, n. sp, — Similar in form to inquinatus, but large'' more robust- 

 Head coarsely not densely punctured, not rugose in front, sides rufous. Thorax 

 moderately convex, surface rather densely and coarsely punctured with finer 

 punctures intermixed, sides feebly rounded and broadly rufous. Elytra slightly 

 broader behind the middle, moderately deeply striate, with j^unctures not very 

 closely placed, interspaces feebly convex, more distinctly toward the ajiex, 

 very sparsely punctulate ; color yellowish, slightly reddish in more recent 

 specimens, and with black spots, a small spot at base of fifth interval, one 

 slightly in front of middle on the fifth and fourth, usually joining, another 

 slightly behind it on the second and third, a sinuous band at apical fourth on 

 intersj>aces five, four, three and two, usually extending foward along the 

 second interval, joining the spot in front, usually a small black spot slightly 

 behind the humeral angle on the seventh and eighth intervals. Body beneath 

 piceous. legs and parts of mouth testaceous. Length .28 inch ; 7 mm. 



Differs from all our species of the group by the greater convexity 

 of the elytra! interspaces. The striae of the inner series extend near- 

 ly to apex of elytra, are parallel and not confluent with those of the 

 outer series; the fifth and sixth stria? alone join. This arrangement 

 of the striiie is the rule in Group B, and only rarely occurs in any uf 

 the following groups. 



Maine and Eastern Canada. 



Group K contains but few species easily known by thier surface 

 being entirely opaque. The head and thorax is always densely and 

 rather coarsely punctured and the elytra faintly striate, with inter- 

 spaces flat, either finely longitudinally wrinkled, or muricately punc- 

 tured. The thorax is distinctly margined at base. The hind tibitB 

 with the upper oblique line of spinules almost entirely obliterated. 

 The first joint of the hind tarsi is not as long as the two following to- 

 gether, although equalling' the upper spur. 



Our species are distinguished as follows. 



Clypeus on each side of emargination with an acute tooth lutulentus. 



Clypeus on each side of emargination rounded. 



Mesosternum fiat stupidus. 



Mesosternum carinate between the coxae lentus. 



A. lutulentus, Ilald. Proc. Acad, i, 1842, p. 304 ; Journ. Acad. Sor. ii, vol. 1, 

 p. 104. — Clypeus rather deeply emarginate at middle, and on each side an 

 acute prominent tooth, distinctly sinuate in front of the gense. Head coarsely, 

 densely and very equally punctured, moderately convex and with very faint 

 traces of the three tubercles, so prominent in the preceding group. Thorax 

 moderately convex, sides feebly rounded, surface very densely and coarsely 

 punctured. Elytra elongate oval, moderately convex, feebly striate, strife with 

 traces of distant punctures; interspaces flat, very finely longitudually wrinkled 

 and sub-quadrate. And with very minute and fine erect hairs, scarcely to be 



