Horn.] oil.' [June 20, 



P. bistriatus, Er. Jahrb., 1834, p. 171 ; Lee. Bost. Journ. V., p. 67. 

 pi. 4, fig. 11 ; ]\Iars. Mon., 18G2, p. 36 ; 1861, pi. 15, No. 25, fig. 8. 



Oblong oval, sub-depressed, piceous black, shining, antennae and legs 

 reddisli-brown. Head sparsely punctured, frontal stria entire. Thorax 

 moderately coarsely but si^arsely punctured, marginal stria entire. 

 Elytra more coarsely and sparsely punctured than the thorax, first and 

 second striae short basal, sutural entirely absent. Propygidium finely 

 and sparsely punctured, pygidium more densely. Prosternum not striate. 

 Marginal line of mesosternum distinctly impressed at middle. Anterior 

 tibije finely 4-denticulate. Length .08 inch ; 2 mm. 



Occurs in the Middle States and Kansas. 



P. seminulum, Er. Jahr., 1834, p. 171 ; Lee. Bost. Journ. V., p. 67, 

 pi. 4, fig. 12 ; Mars. Mon., 1855, p. 120, pi. 8, No. 23, fig. 12. 



Oval, moderately convex, piceous, shining. Head sparsely jmnctulate, 

 frontal stria entire. Thorax sparsely punctulate, marginal stria entire. 

 Elytra more coarsely punctured than the thorax, disc with traces of two 

 striae at base and a short faintly impressed sutural. Propygidium and 

 pygidium punctulate, the latter more densely and finely. Prosternum 

 with the strife obsolete. Marginal stria of mesosternum broadly inter- 

 rupted at middle. Anterior tibiae finely 4-denticulate. Length .08 inch ; 

 2 mm. 



Closely allied to the preceding but the more oval and convex form as 

 well as the i:»resence of sutural stria at once distinguish it. 



Occurs from Middle States to Texas. 



Dekdrophilus. Leach. 



Antennal fossa under the side of prothorax near the middle, Ijroadly 

 open, pectoral plate broadly incised. Tibia} moderately dilated, outer 

 margins finely denticulate. Spur of anterior tibife large. 



D. punetulatus, Say. Journ. Acad., 1825, p. 45 ; Lee. Bost. Journ. 

 v., p. 65, pi. 4, fig. 8 ; Mars. Mon., 1857, p. 435, pi. 11, No. 30. 



Piceovis black, oval, moderately convex, shining. Head finely punctu- 

 late. Thorax sparsely and evenly punctulate, marginal line wanting in 

 front, finely impressed at basal end. Elytra sparsely punctured, punc- 

 tures denser toward the apex, outer siibhumeral entire, deeply impressed, 

 inner svib-obsolete ; dorsal striiB 1-2 nearly entire, 3-4 gradually shorter, 

 basal, sutural entirely wanting. Epipleura3 punctured. Progygidium 

 vei'y short, sparsely and finely punctulate, pygidium oval, vertical, feebly 

 convex near the sides slightly concave, coarsely and rather densely punc- 

 tured. ]\Iesosternum deeply emarginate, without stria. Prosternum on 

 each side striate, apex rounded, lobe short. Tibiae similarly dilated, 

 outer edge finely denticulate. Length .12 inch ; 3 mm. 



Occurs in the Middle States region, under bark. 



