Two new Species of the Genus Xanthospilopteryx. 291 
orifice, which is situated on or close to the posterior edge of 
ventral surface. Anyone desiring to intelligently compre- 
hend the external anatomy of Melophagus and Lipoptena will 
do well to study carefully the excellent plate of Melophagus 
ovinus given by Dr. Cooper Curtice, in his work on the 
‘ Animal Parasites of Sheep’ (Bureau Animal Industry, U.S. 
Department of Agriculture, 1890, plate 4). 
The male hypopygium in the present species can be clearly 
made out in a dry mount of the abdomen by the use of a 
high-power objective. ‘The male organ itself is moderately 
stout and blunt at tip, rather than pointed as in Dr. Curtice’s 
figures of JZ. ovinus. 
Note.—Professor J. H. Comstock, in his new ‘ Manual for 
the Study of Insects,’ p. 458, states that “the species of the 
genus Lipoptera (sic) are winged at first and live on birds ; 
later they migrate to quadrupeds, where they remain, and 
having no further use for their wings, they lose them.” I 
know not what authority Professor Comstock has for this 
statement, but I should feel that it was open to question. At 
all events it cannot be made as a general statement for the 
genus, for it is clear, from the preceding notes, that the pre- 
sent species breeds, certainly at times and presumably always, 
on deer; and, judging from the above specimens, which seem 
to show unmistakably their recent escape from the puparium, 
it is always wingless. 
N.B.—In his recent revised ‘ Synopsis of North-American 
Diptera,’ Dr. Williston has included 7rzcobcus, in the table of 
Hippoboscidz, in the section with claws simple. It should 
be pointed out that Trichobius possesses bifid claws (see my 
description in Ent. News, 1891, pp. 105-106). 
XXVIT.— Two new Species of the Genus Xanthospilopteryx, 
Wallengren. By W. J. Houuanp, LL.D., F.E.S., &e. 
J HAVE recently received several examples of a fine species of 
Xanthospilopteryx from Cameroons which does not appear to 
be represented in European collections, and thus far has 
certainly not been described. I take pleasure in naming it 
after Mr. W. F. Kirby, the veteran student of entomological 
literature, whose recent monographic revision of the genus is 
of great value. While visiting the K.-k. Museum fiir 
Naturkunde at Berlin the other day Professor Karsch kindly 
pointed out to me a specimen of an allied species taken by 
Dr. Pogge in Equatorial Africa. Availing myself of the 
