Note on Fornax calceatus Say, and F. Hornii onv., and 
on Corymbites divaricatus Zec.. and C. crassus Lec. 
By FREDERICK BLANCHARD. 
Mr. Chas. Dury has mentioned in Ent. Amer., vol. IV, p. 163, 
that Fornax Hornii is the Q of calceatus. 1 had not identified the 
‘former, but on exhibiting to Dr. Horn a series of cadcea/us, assorted ac- 
cording to sex, he at once remarked that the Q was what is described 
as Hornit. The antenne are slender and ‘filiform, in the ( reaching 
three joints beyond the hind angles of the thorax and as far as the hind 
cox, but in the Q only extending one j.int behind the thoracic angles; 
the second joint is mserted beneath the apex of the first so as to be 
partly hidden from above, when observed from below, however, in the 
c'; the second, third and fourth. joints appear to be about equal in 
length, or the third may be a triflelonger; in the Q, the third joint is 
quite distinctly longer than the second or fourth, and on this difference 
chiefly, is based the name Horn; the second joint is not really shorter 
than in the <j, but it looks shorter in comparison with the greater length 
of the third. 
I observe that in this species and also in three species of Drome- 
olus, basalis, cylindricoll’s and striatus, which are before me, all having 
filiform antenna, that the thighs are rather deeply grooved and broad at 
the apex, the lower angle being laminiform and partly protecting the 
tibiz in repose. In Dromeolus pusillus, having serrate antenne, the thighs 
though grooved beneath for the reception of the tibiz are narrowed at 
tip without distinct expansion of the angle. In f/vrnax calceatus the 
claws are also simple as in Dromcolus ; the coxal plates are strongly 
dilated inwardiy and usually strongly angulate, but specimens occur 
with the posterior inner angle considerable rounded. *The j\ has the 
thorax more narrowed in front ; the lateral pieces of the <j‘ intromittent 
organ have a hook-like barb at tip. 
The larger female greatly exceeds the male in size; the J being 
4.55 mm., and the 9 5—7 mm. 
The species occurs rather abundantly in Mass. and N. Y., under 
bark of pine stumps in May. 
The only other species of Fornax at hand as I write is orchesides, 
which has toothed claws, the antennz are strongly serrate and do not 
differ appreciably in the sexes, the second joint is here really very short 
while the third is longer than the fourth and equally broad. The eyes 
encroach more upon the antennal grooves than in ca/cea/us, in fact com- 
pletely occupying them. ‘The thighs are grooved beneath, but narrowed 
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