Vol. II, No. 7.] On some Freshwater Entomostraca. 275 
[N.S.] 
size, sculpture and number of lines of growth are very different. 
The only species from which there can be any difficulty in separa- 
ting it, 1s Hstheria mexicana, Claus. It may be distinguished by 
the rather more prominent umbones, yas i ee dorsal angle 
of the shell, and smaller number ‘of joints in the second pair o 
antennee. The sculpture of the shell of Hstheria daitloa resembles. 
very closely that of Hstheria meaicana as figured by Packard (1883, 
Pl. xxiv, Fig. 6): 
4, Ovounctirewts HistopPi (Baird). 
(See Sars, 1887.) 
One specimen of this remarkable species was taken by 
Dr. Annandale in a small tank at Calcutta about half an acre in 
extent and a a good deal of vegetation. First recorded by 
Baird in 1859 m Nagpur it has since been found in Ceylon, 
Celebes, Sum sr, > Anatvahia cated and Victoria), East apne ', 
and Brazil. It is the sole representative of what is probably a ver 
primitive genus, and in its structure, life-history and distribution it 
is perhaps the most interesting of all Phyllopods. 
5, BRANCHINECTA ORIENTALIS, Sars. 
The collection contains three specimens of this species taken 
by Capt. R. E. Lloyd, I.MS., at Gyantse, Thibet. The specimens 
described by Prof. Sars ( 1901) were found in Lake Chunta-nor, 
Eastern fo The ae ee specimens agree fully with the 
description given by Sars, with the exception that the 
furcal anche are anively a little longer. 
6. BRANCHIPUS PISCIFORMIS, Schaeffer. 
Syn. B. ledou!ai, Barrois, 1892. 
A number of specimens of this species contained in the collec- 
tion are labelled “J.A.W. Murray, Sind.” They differ slightly 
from the type in havin ng a few chitinous hooks on the tip of the 
penis of the male; and in having the tooth on the inferior antennz 
somewhat more prominent. In these respects they approach 
Branchipus ledoulxi, Barrois, rp are in fact a link between “0 
latter and Broce pisciformis, Schaeff. I ise . ledoulxi, 
for this reason, as no r aicient 
species. Hitherto if species has only been recorded from parts 
of Europe, Algeria and Syria, so that the aca record is a 
considerable extension of its range to the eastwa 
7. SrREPTOCEPHALUS DICHOTOMUS (Baird). 
S ) _ &. bengalensis, Alcock, 1896, and Chirocephalus stoliczke, 
Mae mW ood. Mat on MSS. See Sars, 1900. 
unity of examining the types of Strepto- 
th rt 
shige wham | 8 k, consisting of one male and one female- 
cephalus bengalensis, Alcoc 
