A New Species of Jschnopsyllus (I. ashworthii). 13 
(6) Mesothoraxr.—Mesonotum—long and bristly, having 5 irregular rows of 
bristles (6-7 units in each). Near the posterior edge are 9 
peculiar spine-like projections (arranged 2 on each side ventrally 
and 5 medianly), which, as they do not rise directly from the 
edge, can hardly be homologous with the teeth of a comb but are 
probably to be regarded as modified hairs. They are broad at 
the base and taper abruptly to a fine point. Similar structures 
have been described by Rothschild in J. aegyptius.} 
Mesosternum—(a) sternite, bare; (b) episternite, with 3 bristles; (c) 
eprmeron, with 4 bristles, and one bristle on the chitinous rib 
separating the episternite and epimeron. 
Spiracle exposed. 
(c) Metathorax.— Metanotum—has 5 irregular rows of bristles. The hindmost 
row (consisting of about 8 units) stands upon the thickened rib 
of chitin. The comb consists of 15 teeth. 
Metasternum—(a) sternite, bears 1 stout bristle at upper posterior edge ; 
(6) episternite, narrow, with 1 bristle; (c) epimeron, with 4 bristles 
(Gl, 2, 1D). 
ABDOMEN.—The following is the arrangement of bristles, spines, etc. There 
are combs on segments 1 and 2. 
TON POLLEN NTT Vee esven lovelies i avallle 
a | | 
Tergites, Bristles . . Bf. iil 11 il, |} iil 11 10 
“ Teeth in Comb . 15 11 
Sternites, Bristles : a8 2 2 4 | 4 4 10 
The first tergite, which closely resembles in chetotaxy the tergites of 
the thorax, bears about 4 rows of bristles. The last row (the only 
one enumerated in the above table), placed immediately before 
the comb, is more regular, and consists of stouter bristles than 
are found in the other rows. It does not appear to be strictly 
comparable with the rows of similar bristles on tergites 2-7. The 
latter are somewhat post-median, their line going through the 
stigma, whereas on the first tergite the chief row is placed far 
behind the stigma, which is covered by the metathoracic epimeron. 
' Bint, Mo, Mag., Second Series, vol. xiv. (1903), pp. 83, 84, pl. 1. fig. 1. 
