SOME NEW NEARCTIC FLEAS. 63 



three spines on each side dorsally. The other tergites bear, in addition to the 

 usual two rows of hairs, a third anterior row of short bristles. The seventh tergite 

 has — placed on each side at the apical margin — three long hairs; in the female 

 the middle hair is the longest, the uppermost hair being longer than the hairs of the 

 subapical row. (In the male they a)e, unfortunately, broken off.) The sternites are 

 rather hairy ventrally, the hairy area extending basad beyond the middle on each 

 .segment. The legs are very characteristic, having 7 or 8 pairs of spines at the 

 dorsal edges of the tibiae.* The first pair is short, consisting of a spine and hair, 

 while the second one consists of one long and one short spine. The'longer spines 

 gradually increase in length distally, the last being by far the longest. There is a 

 single intermediate spine between the sixth and seventh pairs. The first segment 

 of the fore-tarsus is equal in length to the fifth, the first segujent of the mid-tarsus 

 is about one and a half times as long as the last, while in the hind-tarsus this 

 segment is twice as long as the last. The eighth sternite is large, being clothed 

 apically with thick hairs. Process (p) of the ninth tergite (fig. 3, ix) is tongue- 

 shaped, with numerous hairs at its edge, the ventro-distal hairs being prolonged. 

 The process (p. 1) is less projecting, bearing long hairs besides several small ones. 

 The manubrium (m) is slender, long, and not dilated at the end, though slightly 

 curved, while the movable finger (f) is boot-shaped, with the apex rather truncate, 

 its ventro-distal margin being compressed cariniform and clothed with hairs (fig. 

 3). The ninth sternite is boomerang-shaped, bearing numerous hairs ventrally of 

 varying size, the more apical ones being spiniform, 



I have received several specimens of this very distinct species from 

 Mr. G. F. Dippie, taken on Taiiiias stn'atiia, at Branchtown, Ontario, 

 Canada, on September 20th, 1899. 



Uijutricliopai/lla dippiel, sp. nov. (Fig. '•^). — This distinctly new species is 

 allied to H. talpae (Curtis) (which is figured in Fnt. Eec, xii., p. 257, 1900)t. 

 The present American species differs from //. talpae in its smaller size, and in being 

 generally less hairy, and, moreover, in having the genal spines six in number. H. 

 dippici bears two small pre-oral spines at the anterior ventral angle of the head in 

 the male, and one in the female. The genal region, moreover, is more prolonged, 

 and the genal spines are more ventral in position. The pro-thoracic comb consists 

 of 36 teeth. On the second, third and fourth abdominal tergites there are also 

 combs, but these are markedly different from the combs similarly placed in IF. 

 talpae, as they consist of 8, 4, and 3 teeth respectively on each side. The teeth of 

 these abdominal combs are very small, stout, and wide apart, the first comb differs, 

 moreover, from that of //. talpae in being incomplete, i.e., in there being no spines 

 towards the mesial line. The sternites are not quite so hairy as they are in i?. 

 talpae. The eighth sternite of the male differs from that of H. talpae in not being 

 so strongly dilated distally, and in being much more hairy (fig. 2, viii). Tlie ninth 

 tergite (fig. 2, ix) of the present species, as opposed to that of H. talpae, lacks the 

 short, strongly chitinised spines on the inside of the upper distal angle ; the finger 

 is broader and more conical in shape than it is in H. talpae (fig. 2, f). The 

 ninth sternite is similar to that of H. talpae, but smaller, the spine at its ventral 

 edge, some of which are short, are arranged in six pairs (fig. 2, ix. c). 



I have received a male of this peculiar species from Mr. G. F. 

 Dippie, taken on Piitorius Innnirainlatiai, at Alberta, Canada, on 

 September 21st, 1900, and a female from Mr. Allan Brooks, at 

 Chilliwack, British Columbia, taken from Lutreola enenjamos^, on 

 January 2ud, 1900. The Hystrichopsylla described by Mr. Baker as 

 nmen'caua (Hut. Xeus, x., p. 37, 1899) is said to have 14 genal spines, 

 and about 50 teeth in the pro-notal comb. The abdomen of this 

 .species, moreover, appears from the description to be very different from 

 that of H. di lipid. 



Description ok Pi.ArK II. 



1 . rulcx urni, sp. nov. j . Clasper. 



2. HijKtrichopnylla dippiei, sp. nov. j . Genital armature. 



3. Typhlopsjilla grandis, sp. nov. c^ . Genital armature. 



* 7 fore-tibise, 8 hind-tibiae. 



t In consequence of a regrettable oversight on my part, the fore-tarsus of H. 

 taJpae is drawn a=; having only four segments. — K..T. 



