Horn. | 582 [April 19, 
rence of any similar structure anywhere in the coleopterous 
series except in Hypocephalus, an insect without known rela- 
tions. The appearance here of one of the peculiar characters 
of that genus has weight in confirming the view held by 
LeConte, of its Clavicorn affinities, and while we find this 
small link, it must not be forgotten that there are certain 
Rhynchophorous affinities in Hypocephalus as well as in sev- 
eral genera of the family now under consideration. 
S. costatus Lec. New Species, 1863, p. 68. 
Elongate, cylindrical, piceous, moderately shining. Head aciculate punc- 
tate. Thorax one-third longer than wide, narrowed at base, disc aciculate 
punctate, moderately convex. Elytra not wider than thorax, base feebly 
emarginate, basal margin at middle rather strongly reflexed, disc with four 
finely elevated lines, costiform at tip, and a fine sub-humeral stria, inter- 
vals sub-opaque, moderately densely and irregularly finely punctured, 
body beneath rather coarsely but not densely punctured. Length .16—.18 
inch; 44.5 mm. 
The sides of the gene are merely slightly elevated in a 
plate, being a feeble reproduction of Deretaphrus, the anten- 
nal grooves are consequently less strongly marked than in 
the next species. 
Occurs in South Carolina and Florida. 
8S. dentiger, n. sp. 
Form and facies of the preceding differing as follows: 
Head and thorax less densely punctured. Elytral lines more distinctly 
elevated, intervals irregularly, biseriately, sparsely punctulate. Length .20 
inch; 5 mm. 
The most marked distinction between these two species 1s 
in the presence of the pyramidal genal process already men- 
tioned. Whether this character exists in any of the Brazilian 
species, I cannot say, as Mr. Pascoe systematically avoids all 
mention of the under surface of the majority of the Colydii- 
de he describes. 
Two specimens; Cape San Lucas, Lower California. I 
have also a specimen collected by Mr. Wm. M. Gabb in the 
Island of Santo Domingo, not distinguishable in any, manner 
from those from Lower California. 
