APHANIPTERA. 35 
T: assimilis, Tasch. 
With only three genal spines. 
Infests Sorex vulgaris, Mus sylvaticus, Arvicola riparia, and Talpa 
vulgaris. 
This species is recorded by Saunders,* but is not mentioned in 
Verrall’s list. 
T. gracilis, Tasch. 
Body elongated, very slender, and light brown. Head above 
rectilinear ; three spines not on the cheek, but on the suture dividing 
the antennary cavity from the front of the head. The spines are 
straight and directed backwards ; the lowest is the shortest, conical, 
and blunted ; the second longer and pointed, the longest uppermost, 
and springing from the front edge of the antennal pit, blunt and 
tooth-like ; pronotum furnished with nine long bristles, and spines on 
each side. Abdominal bristles in oze row only; the second row is 
represented by one or two bristles only, and are very small. 
This is another British species, mentioned in Verrall’s list. 
Curtis also records a flea from the hare (C. /eforis), and from the 
starling (C. sturni). Leporis appears to be the same as gonioce- 
phalus. 
The Palicide tabulate as follows : 
1. Pulex: eyes distinct. 
2. Lystrichopsylla: densely spinose cheeks and clypeus. No 
eyes, or eyes indistinct. 
3. Lyphlopsylla: no eyes, or eyes indistinct. 
1. Pulex : 
No pro-thoracic comb posteriorly, 7vritans. 
Posterior comb present. 
Head without black spines. 
Proth. comb with 26 teeth or more, Avium or galline. 
” ” ” 18 ” » Sciurorum. 
» ” » 3. 9» on each side, Zrinacet. 
” ” ” 18 9 Jasctatus. 
Head with black spines, 
Epistome and cheeks with 6-7 black spines on each 
side, Canis = felis. 
Post. margin of cheeks with 4 black spines, Gonioce- 
phalus = Leporis. 
* Ent. Mo. Mag., vol. xxvii., p. 170. 
3-—2 
