D4 PROF. G. 0. SARS ON THE COPEPODA (Jan. 12, 
21. Cycrops varicans G. O. Sars. (Plate XVI. figs. 139, 140.) 
Occurrence—A single female specimen of this form was 
found in a sample from Lake Nyasa, taken 13/6/04 in the 
Anchorage Bay, and another somewhat smaller specimen in a 
sample from Tanganyika, taken 28/9/04 at Mbete, south end of 
the lake. 
Distribution.—Kurope, New Zealand (4. O. Sars). 
22. CYCLOPS EXIGUUS, sp.n. (Plate XVI. figs. 141, 142.) 
Specific Characters.—FEMALE. Body (fig. 141) rather narrow, 
with the anterior division oblong-oval in form and obtusely pro- 
duced in front. Last pedigerous segment with the lateral parts 
slightly prominent and each tipped with a slender bristle. 
Urosome slender, considerably exceeding half the length of the 
anterior division; genital segment only very slightly dilated in 
front. Caudal rami (fig. 142) not attaiming the length of the 
last two segments combined, of nearly uniform width throughout, 
and scarcely at all divergent; seta of outer edge attached some- 
what behind the middle, innermost apical seta very thin and fully . 
twice as long as the outermost, the two middle setz of moderate 
length and having the cilia of their proximal part much coarser 
than those of the distal part, the inner one exceeding the outer 
by about one-third of its length. Anterior antenne rather short, 
and composed of only 11 articulations. Legs of a similar 
structure to those of the two preceding species. 
Length of adult female 0°53 mm. 
Remarks.—Vhe present form is closely allied to the European 
species, C. bicolor G. O. Sars, but is of smaller size and more 
narrow form of body. It also differs in the shorter anterior 
antennz and in the less produced caudal rami. 
Occurrence.—Only a single female specimen of this form has 
come to my notice. It was found in a sample from Tanganyika, 
taken 28/9/04 at Mbete, south end of the lake. 
23. CYCLOPS CUNNINGTONI, sp.n. (Plate XVII. figs. 143-150.) 
Specific Characters—Fermaue. Body (fig. 143) comparatively 
short and robust, with the anterior division rather broad and 
pronouncedly depressed, having its greatest width somewhat 
behind the middle. Cephalic segment very large, and gradually 
narrowed in front to an obtusely conical point. Lateral parts of 
the three succeeding segments somewhat expanded, but with the 
hind corners rounded off. Last pedigerous segment forming on 
each side a short obtuse prominence tipped with a slender ciliated 
seta. Urosome rather thick, about half the length of the anterior 
division and slightly tapering behind; genital segment somewhat 
dilated in its anterior part. Caudal rami (fig. 150) not nearly 
attaining the length of the last two segments combined and 
slightly widening at the end; seta of outer edge attached some- 
wh at behind the middle; innermost apical seta only slightly longer 
