258 [December 



hue, as the numerous specimens before me are all alike. The head 

 has three grooves, one on the front between the antennae, and two on 

 the vertex; the antennae are longer than the head and thorax together, 

 the joints are oblong-cylindrical, the fifth joint is larger than the ad- 

 joining, the ninth and tenth obconical, larger, the last ovate. The 

 thorax is subangulate, rounded, impunctured, with two lateral and one 

 very small middle groove. The elytra are impunctured, shortly pube- 

 scent, the hairs very regularly disposed, the dorsal striae are nearly 

 entire. The abdomen is short, the first segment larger, pubescent, with 

 two very short, approximate, obsolete striae near the middle of the base. 

 It differs from B. puncficollis by the shorter stature, the impunctured 

 thorax and the color; from B. riihicu lu hi by the color and the extremely 

 small size. They were found near the seashore of Long Island, N. Y. 



7. B inornata, n. sp. — Flava, impunetata, capite thoraceque impressionibus 

 nullis. Long 1.5 m. m. 



This insect takes the same place among the Bryaxis as Arthmius does 



among the B.itrisus, and is easily recognized by the entirely smooth 



rounded thorax. Found in South Carolina. 



8. Batrisus cristatus Lee. is identical with B. fcrox — (Teste Dr. John L. Le- 

 Conte.) 



9. Batrisus aculeatus Lee. is the J of ^. albionicus Aube — (Teste Dr. John L. 

 LeConte,) 



10. Batrisus striatus is a variety of B. ghbosus — (Teste Dr. John L. LeConte.) 



IL Batrisus juvencus, n. sp. — Elongatus, gracilis, castaneus, capite reticulato, 

 subtrianguhire oculis parvis paree proniinulis. vertice minus convcxo obsolete 

 cristato, suleis lateralibus, thorace trilmeato, elytris f)unctatis, tibiis inarmatis. 

 Long 1.5 in. m. 



This is the smallest species known to me in stature, resembling B. 

 /erox, but more elongate. The head is plano-convex, the fronte plane, 

 the lateral margin obsoletely separated by a slightly impressed sulcus, 

 the vertex not elevated with an obsolete depressed carina. The anten- 

 nal joints are inconspicuously growing larger from the 3d — 8th joint, 

 the 9th and 10th are thicker, nearly transverse, the last ovate acumi- 

 nate. The thorax is widest before the middle, punctured, obsoletely 

 trilineate, with two carintie between the lines, bituberculate at the base, 

 the sides are rounded before the middle and straight, converging to- 

 wards the base behind. The elytra are convex, punctured, longitudi- 

 nally impressed at the base in the place of a dorsal stria. The first 

 dorsal abdominal segment is larger than the following one, and trans- 

 versely impressed at the base, in the middle and on each side. The 

 posterior tibiae are not armed. 



