1870.] DR. MURIE ON AN GSTRUS FROM THE HIPPOPOTAMUS. 79 
either end. Extreme long diameter 0°9 inch, and its greatest trans- 
verse one (3 inch. Some ten or more slightly raised ridges surround 
the body ; ventrally these are covered with short fine hairs or sete. 
On the abdominal surface, close to the head, are two hooklets, by 
which the animal fixes itself to the flesh. There are two prominent 
black spots at the anal extremity, beneath these a lip-like projection 
(the anus), the lower part of which has minute spines; and in this 
view (C) two nipple-like limbs stand out on each side. 
Herr Brauer, /. ¢. p. 276, has given a very useful tabular statement 
of the various orders, families, and species of mammals in which 
Cistrid larvee have been found. There is added to each mammalian 
species the name of the insect, and the part of the body where it was 
located. Throughout the work there is a full detail of the history, 
synonyms, &c. of the species ; and a copious résumé of the literature 
on the subject precedes the descriptive text. 
From his classified Table the subjoined list is drawn ; but the pre- 
sent arrangement is altered, and the orders, genera, and species of 
mammals adapted to our Society’s ‘ List of Vertebrated Animals,’ 
for 1866. Some of the common names have been taken from 
Dr. Gray’s Catalogue of Mammalia in the British Museum, 1843. 
The object, then, of the following list is to call the attention of 
anatomists at home, naturalists, sportsmen, Fellows of the Society, 
and others abroad to the circumstance that any larvee found by them 
in cutting up or skinning animals other than those here given, per- 
chance may belong to a species of insect new to science. At all 
events every observation must add to a better knowledge of the life- 
history of those already known. 
Whilst entomologists have acquaintance with the imago insect, 
they often lack information as to the larval form, which those en- 
gaged in different pursuits might supply. 
List of Mammals in which Qstri larve have been found. 
BIMANa. 
Man. Homo sapiens, L. 
QUADRUMANA. 
Monkeys. Stmie platyrrhine, genus et sp.? 
CARNIVORA. 
Domestic Dog. Canis familiaris, L. 
Striped Hyena. Hyena striata, Zimm. 
Jaguar. Felis onca, L. 
Common Badger. Meles taxus, Schreb. 
RopeEnNTIA. 
Brazilian Squirrel. Sciurus estuans, Linn. 
Squirrel. Sczurus aureogaster, Cuv. 
Hackee. Scturus (Tamias) lysteri, Ray. 
