230 GEO. H. HORN, M. D. 



16. li. gracilis Burm. — Elongate, cylindrical, pale rufotestaceous, thorax 

 somewhat darker, head fuscous or piceous. Head broad, eyes large, especially 

 in the male. Clypeus short, deeply einarginate, margin not widely reflexed, 

 moderately coarsely not closely punctate, frout similarly punctured. Thorax 

 short, not much narrowed at apex, sides strongly arcuate in front, nearly parallel 

 or slightly convergent posteriorly, the margin subcrenate, surface moderately 

 coarsely not closely punctate. Elytra more coarsely and closely punctate, the 

 discal costse almost entirely obliterated, the submarginal not at all visible. Py- 

 gidium shining, very sparsely punctate. Metasteruum sparsely punctate, the 

 hairs short and sparse. Abdomen shining, sparsely, vaguely punctate. Claws 

 feebly curved, the tooth small and nearly median. Last joint of maxillary palpi 

 fusiform, elongate, not impressed. Length .41 — .52 inch; 10.5 — 13 mm. 



Male. — Anteiiiial club as long as the stem. Abdomen slightly 

 flattened at middle, j^enultimate segment at middle abruptly decliv- 

 ous, last segment feebly concave. Inner spur of hind tibia long, 

 ol)tuse at apex, distinctly curved and slightly twisted on its own axis, 

 outer spur very slender and long. 



Female. — Club of antennae small and lenticular. Spurs of hind 

 tibiae slender and acute. Hind tarsi scarcely longer than the tibiae, 

 much shorter than in the male. 



Variations. — This species is very constant in its color, except as 

 to the head, which at times is not darker than the thorax or again 

 piceous. The head of the male is broader (from the larger eyes) 

 than the female, the thorax is consequently broader in front in the 

 male. The antennae vary in the number of joints being sometimes 

 9- at others lO-jointed, and specimens rai'ely occur with the number 

 unlike on each side. 



With this species I have united volvida Lee. (Endrosa) and inana 

 Lee, both founded on unique females, the one with O-jointed the 

 other 10-jointed antennae. Among the pale species of Lachnosterna 

 there seems to be a tendency to variation of this sort, while among 

 the darker sjiecies it is very rarely seen. 



Occurs from Canada to North Carolina and Texas. 



17. li. gibbossi Burm. — Oblong, convex, slightly broader behind, color 

 variable from reddish-brown to rufotestaceous, moderately shining. Clypeus 

 very feebly emarginate, front more coarsely punctured, convex, with erect hairs. 

 Thorax rather short and convex, the sides arcuate, narrowing in front, the mar- 

 gin somewhat irregular, but hardly crenate, with long cilia?, disc coarsely rather 

 sparsely punctate, usually with a distinct smooth median space. Elytral punc- 

 tures as coarse as those of the thorax, but more closely placed ; the costffi variable, 

 the submarginal faintly distinct in its apical half. Pygidium convex, subopaque 

 with coarse, but feebly impressed punctures %, shining with distinct punctures 



9 . Metasteruum densely punctured, the hair long and close. Abdomen sparsely 



