349 
Notes on British Flagellates. I — IV. 
form as Cryptomonas Richei n. sp., in the hope of being able to 
complete its description next year when living material will be 
available. The dimensions of the cell are 18-22// long and 9-10// 
broad. 
The second species of Cryptomonas in Miss Rich’s material is 
peculiar in the placing of the chloroplasts. The published figures 
of species of the genus invariably show the two chloroplasts on the 
dorsal and ventral surfaces respectively, so that both chloroplasts 
are visible in the side-view (when the characteristic emargination of 
the front end is apparent, cf. Fig. 2, A and H), whilst when the 
organism is seen, either from the ventral or the dorsal surface (i.e., 
when the emarginate front end is not observable) only a single 
chloroplast is seen covering more or less the whole extent of the 
cell. In the form at present under consideration, however, the 
disposition of the two chloroplasts is just the reverse; they are 
placed laterally. As a consequence, in a side-view, the organism 
shows only one chloroplast and the whole cell appears uniformly 
tinged (Fig. 2, C), whilst when seen from the dorsal or ventral 
surface (Fig. 2, D) the two chloroplasts are plainly visible, one on 
either side. The gullet runs almost straight from the emarginate 
front end and nearly reaches to the posterior end of the cell (Fig. 
2, C and E); both pyrenoid and nucleus are large, round and 
conspicuous. The cilia are markedly shorter than the body of the 
organism. The obliquity of the anterior end is not very pronounced, 
although in most individuals the dorsal edge rises to a higher level 
than the ventral. Reproduction takes place in the resting condition, 
the dividing individuals being enveloped by copious mucilage to 
form palmelloid groups as in other species of the genus. This 
characteristic form may for the present be described as Cryptomonas 
anomala n. sp., but it seems possible that the unusual position of the 
chloroplasts may ultimately warrant the establishment of a distinct 
genus. The individuals were 21-24//. long, 11-12// broad, and 9-11// 
thick. 
IV.— On Two Species of Lepocinclis (Euglenine^e). 
(Fig. 3, A-E). 
In a small pond on the top of Hindhead Common, harbouring 
numerous individuals of Englena , Trachelomonas, and Volvocaceae, 
there occurred in some quantity a form of Lepocinclis ovum (Ehrenb.) 
Lemrn., which is probably identical with var. globula (Perty) 
Lemm. (Fig. 3, C and D). The individuals are 27-30// long and 
about 21// broad, the main body being symmetrically oval with a 
