434 _  ENTOMOLOGICAL NEWS. [Nov., ’08 
abundance. The gap in the known distribution of these two 
species is thus over 500 miles. The overflow from the lake is 
a small stream averaging when I saw it 2 or 3 feet in width. 
Its length from the lake to its mouth in the Poteau River 
is possibly half a mile. A short distance below the lake, in 
passing some bushes which overhung the stream bed, I dis- 
turbed the only specimen I saw alive of P. xanthosoma. This 
flew a short distance along the stream and alighted in a well 
concealed spot in bushes overhanging the water. Its flight, 
manner of alighting and position at rest suggested a teneral 
Libellula. The specimen taken by Frank Collins is somewhat 
worn; he wrote on the envelope “Yellow one.” His home in 
1907 was a camp along the Poteau River and his collecting was 
done along the river, at the lake and at intermediate points. 
Professor Walker has recorded the interesting fact that N. 
yamaskanensis is entirely crepuscular in its habits, spending 
only a brief period of the day on the wing. It is not improbable 
that N. obsoleta and P. xanthosoma similarly are abroad only 
in the evening. 
mutiliinss 
—— 
Ceratophyllus niger n. sp. (Siphonaptera), 
By Carrot Fox, P. A. Surgeon, P. H. and M. H. S., 
San Francisco. 
Female—Head gently rounded to frontal notch which is distinct. 
Three stout bristles in lower genal row; three more slender in upper 
row. Genae acutely pointed posteriorly. Eyes oval. About nine hairs 
on second antennal joint, longer than third joint. One large bristle on 
disc of vertex behind middle of antennal groove. ‘The usual bristles on 
hind margin of head and one large one at lower angle. Numerous min- 
ute hairs along posterior margin of antennal groove. Labial palpi five 
jointed and extend almost to end of anterior coxae. Maxillae triangular. 
Thoracic nota with two transverse rows of bristles; the principal 
with about eight bristles. Ctenidium on prothorax of about twenty- 
six spines. Second, third and fourth abdominal tergites with two 
stout teeth, fifth with one tooth on each side. Two rows of bristles 
on abdominal tergites, the posterior row consisting of about twelve 
bristles; the anterior row fewer in numbers and smaller, and irregularly 
disposed. Abdominal sternites with one row of about eight’ bristles. 
A few smaller along median line on ventral surface. Style slender with 
