Horn.] OD + £ June -°< 



291 ; Mars. Moil , 1856, p. 603, pi. 14, No. 11, flg. 3; aciculatm, Lee. 

 Bost, Journ. V., p. 84, pi. 6, fig. 10 ; Mars. Mon., loc. cit., fig. 2 ; obliquus, 

 Lee, loc. cit., fig. 12 ; c rib ripe nn is, Mars. Mon., 1856, p. 605, pi. 14, No. 

 43, fig. 5 ; Natchez, Mars., loc. cit., p. 604, fig. 4. 



Oblong oval, brownish, slightly convex, shining. Head sparsely punc- 

 tulate. Thorax moderately coarsely and sparsely punctured. Elytra 

 more coarsely but not more densely than the thorax, marginal stria 

 moderately deep, entire. Pygidium finely and sparsely punctulate. 

 Presternum more than twice as long as wide, surface with very few 

 punctures. Mesosternal stria interrupted at middle, meso-metasternal 

 plate rather coarsely but sparsely punctured. Anterior tibiae slender. 

 Length slightly less than .04 inch ; 1 mm. 



Alter a careful study of the types of all the above synonyms, I confess 

 myself unable to separate them. Natchez is said to have the mesosternum 

 with an entire marginal stria, but I am thoroughly convinced that the 

 stria is not entire and that the appearance is entirely owing to a very 

 slight elevation of the anterior edge of the mesosternum, against which 

 the tip of the presternum abuts. The presence of the dorsal stria on 

 which obliquus, aciculatus and cribripennis have been founded, is a 

 character of no value whatsoever here, as every variation occurs from a 

 moderate stria touching the base, to a shorter stria not attaining the 

 base, and from this to no stria at all. 



Occurs not uncommonly in the Middle, Southern and Western States, 

 under bark. 



A. Florida?, Mars. Mon., 1862, p. 693, pi. 4, No. 51, fig. 2. 



Orbicular, feebly convex, piceous, shining. Head sparsely punctulate. 

 Thorax moderately, densely, and coarsely punctured at base, with a 

 short row of closely approximate punctures, arcuate, and terminating 

 within the middle of the elytra. Elytra more coarsely punctured than 

 the thorax at base ; punctures less distinct, at middle and near apex 

 slightly strigose; marginal stria fine, entire; two very short striae at base, 

 very feebly impressed. Pygidium finely and not densely punctured. 

 Presternum scarcely longer than broad, sparsely punctured. Mesosternum 

 slightly concave, surface longitudinally sulcate, stria interrupted. Meta- 

 sternum sparsely punctured, suture obliterated. Anterior tibiae slender. 

 Length .04 inch ; 1 mm. 



More elongate and convex than discus, but equal in size. Occurs in 

 South Carolina, Florida (Marseul), Louisiana (Salle). 



A. discus, Lee. Proc. Acad., 1853, p. 289. 



Orbicular, brownish, moderately convex, shining. Head sparsely and 

 minutely punctulate. Thorax finely punctured, at base a transverse, 

 nearly straight, row of punctures extending nearly to the basal angles. 

 Elytra moderately punctured, more coarsely than the elytra and finer 

 and slightly aciculate at apex, marginal stria fine, entire, slightly 

 sinuous at base, and with a very faint trace of a dorsal stria. Pygidium 

 subopaque, finely alutaceous. Presternum scarcely longer than wide 



