46 PROF. G. 0. SARS ON THE COPEPODA [Jan. 12, 
13. ScHIZOPERA SCALARIS, sp. n. (Plate XIII. figs. 87-92.) 
Specific Characters.—Maue. Body (fig. 87) slender and elon- 
gated, with rather coarse integuments and all the segments very 
sharply marked off from each other, giving it a “ sealariform 
appearance. Rostrum well defined at the base, but of a some- 
what unusual form, being very broad, lamellar, ain terminating 
in an obtuse point. Segments of the Acrior division each with 
a small nodiform prominence laterally. Last caudal segment 
shorter and narrower than the preceding one and without any 
spinules dorsally; anal opercle perfectly smooth. Caudal rami 
(fig. 92) much produced and very narrow, sublinear in form; 
inner edge straight and quite smooth; spine of outer edge 
moderately strong and attached at a short distance from the end ; 
dorsal seta likewise issuing far behind the middle; median apical 
seta very strong and elongated. Anterior antenne (fig. 88) of 
moderate size, and hinged in the usual manner. First pair of 
legs (fig. 89) ria a highly chitinized, obtusely pointed projection 
issuing from the inner corner of the 2nd basal joint, in addition 
to the usual spine; outer ramus of quite normal structure; inner 
ramus distinctly prehensile, 3-articulate, Ist joint long and 
slender, considerably exceeding in length the outer ramus, the 
other two joints quite short and somewhat imperfectly separated ; 
last joint armed at the tip with a strong curved claw anda slender 
seta accompanied by a small hair-like bristle. Natatory legs 
well developed and of the structure characteristic of the genus ; 
inner ramus of .2nd pair of legs (fig. 90) transformed in whe usual 
manner. Last pair of legs (fig. 91) with the distal joint com- 
paratively small and sores fusiform in shape, with only five 
very unequal marginal sete ; inner expansion of proximal joint 
short and ‘amounted at the tip, which carries two thickish juxta- 
posed sete ciliated in their outer part. 
Length of the specu examined 0-49 mm. 
Remaris. arance this form looks very 
different from the giahen nse, and by its pronouncedly sealari- 
form body, the broad rostral plate, and the slender and narrow 
caudal rami, 1 much more resembles some species of the genera 
Laophonte and Cletodes, The anatomical examination has, 
however, proved it to be a genuine member of the present 
genus. 
Occurrence.—The above-described male specimen, the only one 
that has come to my notice, was found in a sample from Tangan- 
yika, taken 24/2/05 at Baraka, north-western shore of the lake. 
Family CLETODID &. 
This family is chiefly distinguished from the Zaophontide, to 
which it bears some resemblance, by the non-prehensile Ist pair 
of legs. The type of the family i is the genus Cletodes Brady, to 
which im recent times several other genera have been added, all 
from the sea. 
