50 Bulletin of the Brooklyn Entomological Society, Vol. XIV 
There seems to be no valid reason to retain a separate sub- 
family for Spilopsyllus in its new position. 
The species of Neopsylla Wagner are divided into three 
groups* by Rothschild on the basis of the arrangement of the 
plantar bristles of the fifth fore and mid tarsal segments and on 
the presence or absence of a row of short spines on the inner sur- 
face of the hind coxa. The species described below as new falls 
into group III. The following table will separate the known 
males of the species of this group. | 
Upper lobe of clasper larger than the lower.............. similis sp. nov. 
Upper lobe of clasper not larger than the lower. 
Outer margin of finger nearly straight, finger longer than distance 
from its attachment to tip of lower lobe.......... wenmanni Roths. 
Outer margin of finger sinuate so that finger is suddenly wider near 
middle, finger not longer than distance from its attachment to tip 
otlowerlobe Ag. oe ee ee i ae eR aee faceta Roths. 
The remaining species in this group, testor Roths., is known 
only from the 2. It is evidently near to faceta Roths. 
Hystrichopsylla schefferi sp. nov. 
Head.—The frontal notch is small and low down in front. 
The frons bears two rows of bristles, the upper of nine, running 
from the base of the antenna to below the frontal notch and the 
lower of three heavier and longer bristles, from above the middle 
of the antennal groove to near the base of the maxillary palpi. 
There are about thirty small hairs scattered over the surface 
below the upper row of bristles. The eye is represented by a 
thickening in the chitin. The genal ctenidium is of seven spines, 
the middle spines much the longer, and occupies about the ante- 
rior third of the genal margin. The occiput bears three rows of 
hairs, the first row of eight small, the second row of eight larger, 
this row being interrupted between the third and fourth bristles 
from the antenna and a third row of bristles from the dorsal 
posterior margin of the head to the lower part of the post gena. 
Along the posterior margin of the antennal groove are many 
minute hair-like spines. The rostrum reaches four-fifths the 
length of the fore coxa. 
* Rothschild, N. C., On Neopsylia and some allied genera of Siphonap- 
tera, Ectoparasites, I, 30-44, 1915. 
