13 
Silvanus gossypii n. sp. 
General appearance of siirinamensis, but smaller and slenderer, differing markedly 
in several particulars. Color of the head and prothorax chocolate brown, elytra 
cinnamon brown; entire surface opaque, densely covered with long yellow pubes- 
cence producing a fulvous appearance. 
Head at least as wide as long, sometimes very slightly wider, narrowing anteriorly 
nearly as in siirinamensis; side margins of front not prominent, very little reflexed; 
tempora of medium size, equal to one-third the diameter of the eye, conically promi- 
nent, somewhat variable, but with the lateral margin usually straight, rounded at the 
extreme apex. Eyes not prominent, but proportionately slightly larger than msurina- 
mensis, of about the same width across as at the tempora, rather finely granulate. 
Antennae with well-defined club; first joint as in siirinamensis; joints 2 to 8 strongly 
rounded; joints 2 and 3 not very much longer than wide; joints 3 and 4 marly 
globular, 5, 6, and 7 just perceptibly wider than long. First and second joints of 
club broadly perfoliate, the first about one and three-fourths wider than long, nearly 
as wide as terminal one, the second widest, nearly twice as wide 
as long, terminal one about as wide as long, conically produced 
at apex. 
Prothorax comparatively feebly sexdentate; anterior teeth 
perceptibly but not conspicuously more prominent than the sec- 
ond pair, only moderately acute, sometimes rounded apically; 
basal teeth noticeably inconspicuous, not produced farther at 
the sides than the preceding pair. Dorsal sulci rather shallow, 
the median ones about one and one-half times wider than the Fig. 5.— Silvanus gos- 
lateral ones. Lateral carinas subparallel, slightly arcuate at sjqw*; head and tho- 
each end toward the median line. rax-enlarged; an- 
„, , I, , , ,„ . , . -, , tenna at right— more 
Elytra nearly three and a halt times as long as wide, sub- enlarged (original*, 
parallel, rounded posteriorly, comparatively finely but not 
deeply striate-punctate, intervals not noticeably prominent; ventral surface very 
finely pubescent, abdomen rather densely pubescent, otherwise nearly as in snrina- 
men8is. Scutellum very minute, obscure, but apparently more than twice as wide as 
long, and produced posteriorly at the middle. Femora only moderately robust, with 
no visible teeth ; trochanters also mutic. 
Length, 2.1 mm. ; width, 0.5 mm. 
Described from three individuals, of unknown sex, but probably 
males, received at the Department of Agriculture, Washington, I). C, 
in November, 1893, in cotton seed from India. Types in the United 
States National Museum. 
The type specimens were all in perfect condition when found, which 
would appear to indicate that they were living when received at this 
Department. 
This species is undoubtedly exotic, and probably not yet introduced 
in this country. From what we know of related tonus it is fairly 
positive that it was breeding in the cotton seed, and that, like insects 
of related habits, it is capable of living upon cereal and other seeds in 
similar manner. It would perhaps be premature to place it in our list 
of species inhabiting America north o[' Mexico, although its title to be 
so listed is stronger than that of other species that might be mentioned. 
(Seewriter's remarks on Galandra linearis ct aL, in Insect Life, Vol. VI 1. 
p. 332.) 
