1852.] 153 



13. S. a n a 1 i s , fusiformis pilosus, thorace antrorsum angustato, baai non striate 

 elytris vix obsolete punctulatis, basi uaifoveatis, aatenais longiusculis articulis 

 intermediis subrotundatis, ano pedibusque flavis, femoribus clavatis. Long. 

 045. 



Louisiana, Schaum and Wapler. This species is very similar to the preceding, 

 but is narrower, being of the form of S. basalis, with which it agrees also in the 

 antenna?, but differs in size, and in having no impression at the base of the thorax. 

 The feet are testaceous, the thighs are darker : the tip of the abdomen beneath is 

 yellowish. 



14. S. brevicornis, piceus, subfusiformis, dense sordide pubescens, thorace 

 antrorsum angustato, elytris basi vix foveatis, antennis breviusculis, articulis 

 intermediis subrotundatis, femoribus valde clavatis. Long. -055 



Say, Long's Exped. to St. Peter's River, 2,273 : Schaum, An. Ent. 19.* 

 New York and Pennsylvania, in the nests of a small black ant. This species 

 is more obtusely rounded behind than the preceding species of this division. The 

 pubescence is more prostrate, and very dense. The antennae are not longer than 

 the head and thorax : the four last joints form a club larger in proportion than in 

 the other species, and as long as the other joints collectively. The thorax is 

 less narrowed in front than in the preceding species, and is a little rounded on 

 the sides : there is no impression at the base : the elytra are slightly foveate 

 inside of the humerus. 



B. a i3. 



15. S. r a s u s , testaceus, glaber, thorace longiusculo, lateribus subrotundato, 

 basi utrinque foveato, transversim impresso, elytris convexis basi foveatis. Long. 

 075. 



Pennsylvania, Haldeman; found with a small fuscous ant. This species is of 

 a bright testaceous color, and entirely glabrous. The head is convex and rounded. 

 The antennae are longer than the head and thorax, the joints 3 7 are cylindrical, 

 the four last are globular and about twice as thick as those which precede them. 

 The thorax is a little wider than the head, longer than wide, slightly narrowed 

 in front, very slightly rounded on the sides, flattened on the disc, and deeply 

 foveate near the basal angles : the foveas are connected by a transverse impres- 

 sion. The elytra are twice as wide as the thorax, regularly oval and convex, 

 forming a slight angle with the thorax; the base is broadly foveate inside of the 

 humerus. The anterior thighs are strongly clavate. 



16. S. obscurellus, piceus breviter pubescens, thorace longiusculo, antice 

 subangustato, elytris basi viximpressis, antennis articulis rotundatis, pedibusque 

 rufescentibus. Long. -045 



One specimen, Liberty County, Georgia. A small species, easily distinguished 

 by its piceous color and elongate thorax. Head convex, smooth, strongly pilose 

 at the posterior angles : antennae a little longer than the head and thorax, the 

 joints iifter the 2d globular, the four last about one-third thicker than those which 

 precede, the last beiag larger and obtuse. Thorax pilose, not wider than the 

 head, nearly one-half longer than wide, very slightly narrowed in front, apex trun- 

 cate, sides straight. Elytra one-half wider than the thorax, and forming an almost 

 indistinct angle with it, obliquely narrowed behind the middle, slightly pubescent : 

 base scarcely foveate. Feet rufous, thighs clavate. 



18. S. cl avatu s ,rufo-piceus,tenuiter pubescens, thorace longiusculo, antice 

 angustato, basi tenuiter impresso, elytris dorso depressis, basi unifoveatis, an- 

 tennis fortius clavatis articulis suptransversis. Long. '045. 



One specimen. Liberty County, Georgia. Elongate rufo-piceus ; head convex, 

 very strongly pilose, each side posteriorly so as to appear truncate at base : an- 

 tennae as long as the head and thorax, joints 3 6 rounded, short, closely united : 



* Schaum erroneously cites the Journal of the Academy of Natural of Sciencs 

 for the descriptions of this species, and S. clavipes. 



