42 - PROF. G, O. SARS ON THE COPEPODA [Jan. 12, 
one likewise more elongated than in that species ; inner expansion 
of proximal joint comparatively larger, extending somewhat 
beyond the middle of the distal jomt. Ovisaes (see fig. 59) broader 
than in that species, and containing a greater number of ova 
arranged in a double row. 
Length of adult female 0°49 mm. 
Remarks.—This form is closely allied to S. inopinata, but of 
somewhat larger size and more robust form of body. It also 
differs somewhat in the shape of the caudal rami and in the 
structure of the legs, as indicated in the above diagnosis. 
Occurrence.—Only a single female specimen of this form has 
come to my notice. It was found in one of the two samples 
in which the preceding species occurred, viz., that from Sumbu. 
8. SCHIZOPERA CONSIMILIS, sp. n. (Plate XI. figs. 64-67.) 
Specific Characters.—VEMALE. Body (fig. 64) considerably more 
slender than in the two preceding species, and somewhat atten- 
uated behind. Rostrum about as in S. validior. Urosome 
almost attaining the length of the anterior division, last segment 
somewhat shorter and narrower than the preceding one and 
having the anal aperture smooth. Caudal rami (fig. 67) con- 
siderably produced, exceeding in length the anal segment, and 
rather divergent, being nearly of uniform width throughout, 
inner edge straight and finely ciliated, spine of outer edge 
attached much nearer to the end than to the base of the ramus ; 
dorsal seta likewise issuing somewhat behind the middle; tip 
transversely truncated and armed above the insertion of the 
apical setee with a transverse row of about seven small denticles. 
Antenne about as in S. validior. First pair of legs (fig. 65) 
comparatively shorter and stouter; outer ramus with the last 
joint shorter than the other two; inner ramus distinctly 3-arti- 
culate, with the Ist joint a little longer than the outer ramus, 
last two joints comparatively short, and combined scarcely 
attaining one-third of the length of the Ist; last joint, as in the 
two preceding species, armed with a slender claw-like spime and 
two unequal sete. Natatory legs of a similar structure to those 
in S. validior. Last pair of legs (fig. 66) with the distal joint 
comparatively small, rounded oval in form; marginal sete about 
as in S. validior ; inner expansion of proximal joint rather short, 
not extending to the middle of the distal joint. Ovisacs oblong 
in form, with the ova arranged in a double row. 
Length of adult female 0-51 mm. 
Remarks.—This is perhaps the form which comes nearest to 
the typical species, S. longicauda. On a closer comparison it is, 
however, found to differ in some particulars, for instance in the 
shape of the caudal rami, and also somewhat in the structure of 
the legs, proving it to be in reality specifically distinct. 
Occurrence.—Some few specimens of this form were found, 
partly in the same sample in which S. validior occurred, partly 
in another sample from Tanganyika, taken 29/10/04 in Vua 
