THE PsELAPHIDa OF NorRTH AMERICA. 423 
thighs slightly compressed laterally, grooved for the recep- 
tion of the tibia, which latter are thicker at the distal end and 
_ grooved externally for the reception of the tarsi. Tarsi cylin- 
drical, joints connate (three in number?) with a single strong 
claw. The male has the last ventral segment sinuate in the 
middle and the venter more concave. 
Found in eastern Tennessee by Fr. Fuchs in 1866. Also 
occurs at Williams, Arizona. (Wickham). 
A. FUCHSII, var. CALIFORNICUS, Arend. This differs in 
the form of the head, which is just perceptibly wider and 
seemingly shorter. The antennal fovez are limited anterior 
to the eye, while in the specimens from Tennessee they are 
drawn up backward above the eye, gradually becoming shal- 
lower. The funicle of the antenne is darker in A. califor- 
nicus, the first joint constricted near the base, with the root 
partly exposed, discernible in the bottom of the fovea; second 
joint as in A. fuchszz, but with the outlines concave. Dis- 
covered by my friend Carl Fuchs at Los Angeles, California. 
Occurs in March. 
SYSTEMATIC OUTLINE OF THE FAMILY PSELAPHIDZ. 
I. Antenne approximate, inserted beneath prominent, porrected, contiguous, 
tubercles. (Pselaphint). 
@1 Posterior coxe, distant, tarsi with two equal claws. 
61 Maxillary palpi with the last two joints similar in form like the cotyle- 
dons of an acorn, without appendages. 
Antenne robust moniliform the last two joints of the maxillary 
palpi compressed, fusiform. - - CEOPHYLLUS, Lec, 226 
Antenne with the last three joints forming a club, the last two 
joints of maxillary palpi lunate, the terminal one longer. 
6? Antenne clavate, maxillary palpi with the last three joints bearing lateral 
setiform appendages. 
Last three joints of maxillary palpi triangular, appendages short. 
Cepius, Lec. 228 
TMESIPHORUS, Lec. 239 
Last three joints of maxillary palpi oval-transverse, appendages 
very long. - - - - - CTENISTES, Reichend. R34 
