March, 1898.] BAKER : NOTES AND DESCRIPTIONS OF SlPHONAPTERA. 55 
has collected it at Newport, Herkimer Co., N. Y., on the Wood-chuck 
0 Arctomys monax) and the Flying Squirrel (. Sciuropterus volucella). 
Mr. Hubbard has taken it from a nest of the Silvery Mouse ( Cereus 
giganteus ) at Tucson, Ariz., and in debris of the Colorado River at 
Yuma, Ariz. 
Pulex brunneri Baker. 
Collected by Professor J. M. Aldrich at Moscow, Idaho, on theSper- 
mophile ( Spermophilus columbianus'). 
Belonging to a group of my Division II, which is composed of 
| essentiall y American species. This group includes hirsutus, eolora- 
densis , bruneri , montanus and divlsus, and is distinguished by having 
one or both of the apical spines on the second joint of hind tarsi greatly 
elongated and exceeding in length joints 3 and 4 together. 
Pulex arizonensis, sp. nov. 
Male. Length, 2 mm. Head evenly rounded from occiput to mouth. A few 
bristles below, before and behind antennal groove. Bristles on apex of second an¬ 
tennal joint few but long. Eyes normal. Labial palpi somewhat exceeding fore 
coxae. Pronotal comb of eighteen spines. Dorsal segments with two rows of bristles 
each, the principal row of six to seven bristles on a side. Fore and middle tarsi very 
weakly spmed, hind tarsi with spines long and slender. In fore tarsi joints 1 and 3 
are of equal length and a little shorter than 2, while 5 is as long as 1 and 2 together. 
In middle tarsi joints I, 2 and 5 are subequal in length and as long as 3 and 4 to¬ 
gether. In hind tarsi joint 5 equals 3 and 4 together, and is somewhat shorter than 2, 
while 1 equals 2 and 3 together; the bristles on the apex of joint 1 are about as long 
or shorter than joint 2. Upper claspers unarmed, little more than twice longer than 
wide, sides subparallel, bent below, apex rounded. 
Described from a male taken by Mr. Hubbard at Tucson, Ariz., in 
a nest of Silvery Mouse. 
Typhlopsylla pectiniceps Wagner. Horae Soc. Ent. Ross, XXIII, 
i88 9 > P- 347 * 
Typhlopsylla bidentatiformis Wagner. Ibid., p. 351. 
These are two other species previously also overlooked by me. The 
former is widely distinct from any other Typhlopsylla by reason of hav¬ 
ing combs of fourteen teeth each on either side of the head. The latter 
is quite near the unipectinata of Taschenberg. 
Typhlopsylla assimilis Tschb. (var. ?). 
Three females, nearer this species than any other, were taken on 
the Screech Owl ( Megascops asio) at Wellesley, Mass., by Professor A. 
P. Morse. This occurrence is to be considered accidental. These 
