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SOME NEW SIPHONAPTEEA. 



By the HON. N. CHARLES ROTHSCHILD, M.A., F.E.S. 



1. Loemopsylla vigetus spec uov. (PI. VIII. fig. 3, 4). 



A CLOSE ally of /,. sa^mlifcr Hothsch., Nov. Zool. xii. p. 48(J. ii. 2. t. 13. 

 liJ,^ o (101)5) (South aad Sonth-East Africa), an;l L. tortus Rothsch., 

 Parasitology i. j). 53. n. 14. t. 6. fig. 4 (I'JO.S) (South-East Africa), but nearer to 

 the former. The bristles are fewer in unmber ami on the whole slenderer than 

 in the two species mentioned. The first row on the epimerum of the metathorax 

 contains 5 or 6 bristles, and the second row 4 to 6. The third and fourth 

 abdominal tergites have each a row of 13 to 15 bristles on the two sides 

 together. The numbers of the bristles on the sternites of segments 3 to 7 are as 

 follows: <S, 5-7, (!, 6, 6, ; ?, 8-10, S-9, 8, 7-9, 7-11. The sternite of the 

 seventh segment has in front of the row, on each side, a single bristle, which 

 is sometimes absent. The hindfemur has 2 subapical ventral bristles on the 

 enter side and a row of 6 or C, rarely 4, on the inside. The bristles on the 

 tibiae and the tarsi are less stout than in .wopulifcr, but of about the same length 

 as in that species. The short snbapical bristle situated on the posterior side of 

 the Ibretibia deserves special mention as being decidedly thinner than the 

 corresponding bristle in scnpulifer. 



MoJifed Segments. — cj. The eighth sternite bears laterally one, rarely two, 

 long bristles near the base, and ventral ly from 6 to 8 bristles, of which the most 

 distal one is the longest ; these bristles are arranged in four rows as follows : 

 2 or 3, 2 or 3, 1 or 2, 1. The outer flap of the clasper bears 7 bristles, of which 

 the third is the thickest, while the fourth is the longest, being curved and 

 twisted as in the allied species (PI. VIII. fig. 3. F'). These bristles are shorter 

 than the corresponding bristles in scopulifer, and the third is much thicker than 

 in tortus. The inner flap of the clasper (PI. VIII. fig. 3. F") is less curved 

 than in tortus, but much more so than in seupul/J'er ; it is also more pointed 

 than in the latter species. The ninth sternite is somewhat club-shaped in lateral 

 aspect (PI. VIII. fig. 3. ix. st.), the tip being distinctly widened and rounded off. 

 The posterior edge of the ninth tergite bears on each side three bristles as in 

 the allied species, but these bristles are even shorter and thinner than those in 



scopulifer. ?. The eighth tergite (PI. VIII. fig. 4) bears on tlie sides to 8 



bristles, an ajiical row of 8 to 10 (usually 9) bristles on the outside, and an ajiical 

 row of 7 or 8 (usually 8) on the inside. The bristles on the anal segment are 

 thinner than in the allied sjiecies. 



We have a series of both sexes olf " rats " collected by Dr. Kennau at 

 Freetown, Sierra Leone ; received from Ur. G. H. F. Nuttall. 



2. Ceratophyllus enoplus spec. nov. (PI. Vlll. fig. C). 



Near C. leucopus Baker, I'roc. U.S. Kat. Afus. xxvii. ji. 4(il (i;iii4), which 

 we know only from the description. 



Ileivl. — The frons bears a row of 3 long bristles in front of tlie eye ; further 

 njJwards there are 3 or 4 small bristles, and between these and the eye a number 



