1852.] 101 



27. A. biguttulus, magis elongatus, ater subnitidus, tenuifer pubescens, 

 confertim punctatus, capite postice subtruncato, thorace longiusculo, ovato, 

 elytris macula pone medium rotundata ferruginea. Long. '15. 



Lee. An. Lye. 5, 255. 



One specimen, San Francisco. A fine species, differing from the two pre- 

 ceding by having the head less truncate behind, and the occiput not impressed; 

 frontal Ime none. The pubescence, though fine, is longer than in the preceding, 

 and the thorax is extremely densely punctured. The punctures of the elytra 

 are larger and not so dense. 



28. A. n i g r i t u 1 u s , elongatus, niger, nitidus, tenuiter longius pubescens, 

 capite parce punctulato, basi subtruncato, thorace elongato, postice subangus- 

 tato, punctulato, elytris depressiusculis minus subtiliter punctatis, omoplatis 

 prominulis. Long. -08. 



Lee. An. Lye. 5, 154. 



San Francisco, California. The form of the body is altogether that of A. 

 V i c i n u s , but the pubescence has caused me to separate it from that group. 

 The antennas are much thicker than in the preceding species, and the eyes are 

 smaller, in both of which respects it agrees with A. vicinus. 



29. A. obscurellus, elongatus, fuscus, dense pubescens, capite punctu- 

 lato basi truncato, linea frontali laevi tenui, thorace longiusculo, ovato, confertim 

 punctulato, elytris elongato-ellipticis, punctatis, pone medium infuscatis. 

 Long. -OS. 



Lee. An. Lye. 5, 155. 



San Jose, California, abundant. A small elongate species, with the humeral 

 angles of the elytra more rounded than usual. The elytra are transversely 

 moderately convex, and a little flattened towards the base. The eyes are small, 

 and the antennae tolerably thick. 



30. A latebrans, sub-elongatus, flavo-testaceus, parce pubescens, capite 

 punctato, basi truncato, occipite breviter impresso, linea frontali tenui laevi, 

 thorace confertim punctulato, vix cordato, elytris basi emarginatis, punctatis, 

 pone medium vix infuscatis, humeris valde rotundatis. Long. '08. 



One specimen, New York. Similar to the preceding, but less elongate. The 

 thorax is narrowed and very slightly cylindrical at base, which causes it to appear 

 somewhat cordate. The elytra are a little flattened at base ; the rounding of 

 the humeral angles gives them a more convex lateral outline than usual. 



31. A. spretus, fuscus, longiuseulus, pubescens, capite punctato, basi 

 truncato, linea frontali integra laevi, thorace confertim punctulato, trapezoideo, 

 elytris basi emarginatis, punctatis, humeris rotundatis, elytrorum basi, antennis, 

 pedibusque testaceis. Long. '08. 



New York and Boston. A pale variety found on the Upper Mississippi. This 

 species very nearly resembles the last, and when pale colored, can only be dis- 

 tinguished by the want of the occipital channel ; the thorax is not longer than 

 wide, and not at all cylindrical at the base. The elytra are a little longer and 

 more parallel. 



32. A. nanus, fuscus, elongatus. dense pubescens, capite punctato, postice 

 truncato, medio laevi, thorace rufo confertim punctulato, trapezoideo, postice 

 subangustato, elytris confertim punctatis apice testaceis, basi rufis truncatis, 

 humeris rotundatis, antennis pedibusque testaceis. Long. -09 -08. 



Lee. An. Lye. 5, 156. 



San Diego, California. Varies in color to pale yellow, without any fuscous 

 marks. It is very closely allied to the preceding, but the punctures of the head 

 are larger; the elytra not so coarsely but more densely punctured, and the 

 humeral angles are less rounded. 



33. A. b e 1 1 u 1 u s , rufo-testaeeus, subelongatus, pubescens, capite confertim 

 punctato, linea frontali vix distincta, postice truncato, thorace trapezoideo, 



