LeConte. | 424 {Feb. 1, 
kindly given me by Dr. D. Sharp. The convex transverse 
ridge of the head causes the clypeal impression to appear 
very deep. 
126. Hypophiocus tenuis, n. sp.—Very slender, cylindrical, con- 
vex, red-brown, shining, antenne and legs ferruginous. Head sparsely 
punctulate, transverse impression deep. Prothorax one third longer than 
wide, front and hind angles rounded at the extreme tip ; apex not emargi- 
nate, sides very finely margined, base indistinctly margined, surface 
sparsely punctulate. Elytra punctured, with indications of strie behind 
the middle, and near the suture. Pygidium sparsely punctured. Beneath 
sparsely punctulate ; 5th ventral segment more strongly punctured, not im- 
pressed. Length 2.2 mm.; .09 inch. 
Lowell, Massachusetts ; collected by Mr. Frederick Blanch- 
ard, and kindly given to me by Dr. Horn. 
Table of the Species of HyPOPHLa@US. 
Shining, sides of prothorax finely margined........ ponoodgoDReORose 2. 
Shining sides of prothorax strongly margined, head with a faint inter- 
ocular transverse impression ; 5th ventral segment broadly impressed. 
1. substriatus, n. sp. 
Opaque, sides of prothorax very finely margined, head with a transverse 
elevated ridge ; 5th ventral segment with a small, apical tubercle.... 
8. opaculus, n. sp. 
Entirely glabrous, prothorax not impressed....... eon Go Oec BES SOC 3. 
Clothed with long, erect hairs, prothorax broadly concave in front ; 5th 
ventral segment not impressed...............-- Sue aon --..-a. CAVUS, 
With a few stiff, erect hairs; prothorax not impressed ; 5th ventral not 
impressed ; head with a shallow interocular impression...........- 4. 
3. Prothorax emarginate in front, apical angles acute ; 5th ventral slightly 
impressed, pygidium densely punctured...............- 3. parallelus. 
Prothorax not emarginate in front, apical angles rounded; 5th ventral 
segment slightly impressed ; pygidium densely punctured........... 
4. glaber, n. sp. 
Prothorax not emarginate in front, apical angles rounded ; 5th ventral 
segment not impressed, pygidium sparsely punctured..5. tenuis, n. sp. 
4, Brown, elytra black, antenne and legs ferruginous...... 6. thoracicus. 
Uniform red-brown, erect hairs less numerous.........7. piliger, n. sp- 
vo 
127. Strongylium simplicicolle.—Black, somewhat shining. 
Head sparsely punctured, vertex longitudinally impressed, epistome thick- 
ened, transversely impressed in front of the clypeal suture, foveate at the 
middle near the anterior margin. Prothorax quadrate, wider than long, 
slightly rounded on the sides in front, angles not rounded, sides not mar- 
gined, disc punctured, inflexed flanks sparsely and strongly punctured. 
Elytra with striz more finely punctured than in S. terminatum. Antenne 
