651 
ZOOLOGICAL LITEilATUHE. 
Acanthocephala. 
Schneider (/. c.) gives an account of the anatomy of this Order, selecting 
chiefly JEchmoi'hynchus (jigas for description. 
Nematoidea. 
Heterakis perarmata, sp. n., Ratzel, 1. c. p. 150, Taf. 4. figs. 8-11, from 
Tarsins spectrum. 
Ascaris bicolor^ sp. n., Baird, Z. c. p. 71, figs. 1-6, stomach of a young 
male Walrus. 
Filaria. A species is alluded to, but not sufficiently determined as new, 
from Tarsius specti'um, by Batzel, /. c. p. 152. 
Filaria anhingcBy sp. n., Wyman, 1. c. p. 101, figs. 1-7. This species was 
found in every instance coiled up on the hack of the cerebellum of Plotus 
anhinga, just behind the cerebral lobes, and confined to the texture between 
the arachnoid and pia mater. The number varied from two to six or eight, or 
even more. The two sexes were always present, though not always in equal 
numbers. The parasites were not met with in any other portion of the 
brain or of the body. 
Filaroides mustelarumf Van Beneden. Ileijenbergh (/. c.) records the 
occurrence of this species in the cavity of the frontal sinus of a Mustda 
erminea. The frontal bone was denuded on one spot; and here, the periosteum 
being removed, an opening was found communicating with the frontal 
sinus. Fifteen specimens were found in the cavity j both males and females 
were met with, more of the latter than the former. 
Gordius. Grenacher (/. c.) contrasts this genus as follows with Mermis : — 
Mermis. 
Gordius. 
Vulva ventral. 
Ovary in the form of tubes, as in Ne- 
matodes. Oviduct placed as a con- 
tinuation of the same. 
A receptaculum seminis wanting, as 
in Nematodes. 
Male genital organ single, as in Ne- 
matodes in general, with spicules. 
Side-shields present. 
Vulva terminal. 
Ovary appearing as a solid cellular 
rope-like organ. Oviduct placed 
on it sidewise. 
A receptaculum seminis. 
Male genital organ double, without 
spicules. 
Side-shields wanting. 
Gordius ornatus sp. n., Grenacher, 1. c. p. 323, Taf. 23. fig. 1, from a 
Mantis of the Philippine Islands. 
Polygordius lacteus and P. purpureus. Schneider (/. c.) describes these 
species in detail, and gives an account of their development, which has 
been traced by him from the larval stage of Lov(§n upwards. From the 
development, no doubt remains that this genus belongs to the Nemathel- 
minthia, forming a special family of this Order. 
Turbellauia. 
Planaria terrestris, 0. F. M., is recorded by Sir J. Lubbock as found in Kent, 
lie also mentions that it has been foimd by Mr. Houghton in Shropshire. 
Leptoplana tremellaris, O. F. M. Keferstein (J. c. p. 6) quotes as syno- 
