114 H. J. HANSEN. . 
entirely visible from above. Epistome produced, reaching to 
the front margin of first joint of the antennulz, separating 
these as a sub-quadrangular plate. Last segment of abdo- 
men has the lateral part of the wall bent downwards and 
somewhat inwards, constituting near the end the sides of a 
groove; the end itself truncate. Urp. without endp., exp. 
long, slender. 
(10) Ancinus (M.-Edw.). 
(3) Hyes colourless; feebly developed. Antennulz inserted 
on the front end of the head; their basal joint much pro- 
duced; about as broad as long, depressed ; entirely visible 
from above. Epistome produced into a triangular process, 
reaching about to the middle of the inner margin of the first 
antennular joint. Lobes on fourth, fifth, and sixth joints of 
maxillipeds very low. Exp. of plp.? two-jointed. Plp.* and 
plp.s have their rami sub-similar; endp. of plp.‘ with a single 
terminal seta; exp. of plp.* without sete; exp. of plp.? with 
the bosses feebly developed, without spmes. Last abdominal 
segment with the distal lateral part of the wall not bent 
inwards, the end narrowly rounded or nearly acute. Urp. has 
the sympod directed outwards and somewhat forwards, with- 
out endp.; exp. long, narrow. Male with the inner margin 
of endp. of plp.? much thickened, longitudinally canaliculated 
on the inner side, and appendix masculina is wanting. 
(11) Ancinella (n. gen.). 
(y) Hyes well developed, black. Antennulz inserted on 
the lower side of the head, their basal joint longer than broad, 
and quite concealed by the protruding front border of the 
head. Epistome reaches scarcely the middle of the inner 
margin of the basal joint of the antennule ; its end is broadly 
rounded. Lobes of fourth, fifth, and sixth joints of maxilli- 
peds long. Exp. of plp.* unjointed. Exp. of plp.* and plp.‘ 
closely set with plumose sete along their distal and outer 
margin. Endp. of plp.* with a few plumose terminal setie. 
Exp.of plp.’ without bosses. Last abdominal segment has 
not the distal lateral part of the wall bent inwards; the end 
