Sc 
II]. Homoeoseelis n. gen. 
FEMALE. The head small and distinctly defined from the circular, rather 
depressed trunk. Frontal and marginal borders and sub-median skeleton well developed. 
Antennul of scarcely medium length, 2jointed. Antenne wanting. Mouth rather small, 
the mouth-border being somewhat narrow, with well developed hairs. Maxillule without 
additional branch. Maxillee about middle-sized, smooth. Maxillipeds of medium size, second 
and third joints coalescent. Body entirely naked in the adults, at the utmost a few hairs 
on the sides behind the head; in the recently hatched and younger specimens the hair. 
covering resembles that of the male. The trunk-legs are situated on the lateral margins; 
they are small, each apparently consisting of a rather thick, short basal part which is jointed 
without articulation to an elongated, very narrow conical, sometimes partly hairy branch, at the 
base of which the basal part bears either a few set or just a vestige of another branch. 
Abdomen wanting. Well developed genital area with a transverse chitinous arch, opening 
towards the front and surrounding the genital apertures, which are situated close together, 
and the entrances of receptacula seminis. Rather close behind the genital area are the two cau- 
dal stylets which are a little thicker and longer than the legs. — Spermatophores frequently seen. 
MALE. Body seen from below elongated ovate, from nearly twice to a little more 
than twice as long as broad. Length of the head somewhat exceeding a third of the total 
length. (The antennule 2- or 3-jointed, and very small antenne are perhaps found in one 
species). In other respects all the other organs of the head, as well as the trunk-legs and 
caudal stylets, mostly agree with those of the female. The trunk, except the anterior part 
of the ventral surface, is covered rather closely all over with comparatively short hairs. 
OVISACS. Are deposed freely, and are of moderate or rather large size, containing 
few, six to eighteen, eggs which are very or exceedingly large. The number of sacs laid 
by one female can amount to eight. 
LARVA. Is known of both species. Antenne much longer than in any other 
genus, more than twice the length of the antennule, owing particularly to the fact that the 
penultimate joint is very much elongated; the terminal seta is very long. Maxillule I have 
been unable to discover. Maxille only 2-jointed, the second and third joints being fused 
and forming one curved joint, which, moreover, along the larger part of both margins is 
furnished with extremely fine and short, setiform processes. Maxillipeds far behind the 
maxille; all joints smooth; second joint half or scarcely half as long as the third one. 
Peduncle of the natatory legs rather slender. Third segment of the abdomen together with 
the small caudal stylets distinctly articulated to the segment, much smaller than the second 
segment. The longest seta of the caudal stylets sometimes shorter, sometimes considerably 
longer than half of the cephalothorax. 
POST-LARVAL DEVELOPMENT. Observed only in one species and described 
above, p. 5d. 
