CRUSTACEA COPEPODA. II. 55 
Antennulee (fig. 2 d, a‘) 4-jointed, rather slender excepting their first joint. — Antenne (fig. 2 d, a’; 
fig. 2 f) curved; the basal portion is a robust joint which is broader than long; the endopod with the distal 
part compressed, rather broad, bearing at least one minute spine, and its end is broadly rounded; the exopod 
does not reach the end of the endopod, and is two-jointed, second joint considerably shorter than the first 
and with at least 2 spines on the end, one of them somewhat large and curved. — The proboscis is directed 
considerably forwards and protrudes (f on fig. 2 d) in front of the incurved antenne; the mouth is small 
(fig. 2g), but the fringed lamella of the lower lip is somewhat broad, and the upper lip has numerous very 
short bristles at the margin; the proboscis has below near the fringed lamella two pairs of small, short, thick 
spines, the spines on the same half sitting close together and rather distant from the two other spines. — 
Maxillule (fig. 2 g) well developed, each with three processes terminating in moderately short, strong sete; 
the palp is well developed, two-jointed, with 3 small spines on the end. — The maxille are extremely inter- 
esting; in the largest specimen (with ovisacs) they have lost a distal part, but the part preserved is more 
than two and a half times as long as the body (fig. 2 a), while in the smaller specimen they are scarcely half 
as long again as the body. In the ovigerous specimen they are coalesced on their inner side in more than 
5/6 of their length — on the lost terminal part nothing can be said —; in the other specimen (fig. 2 b) their 
proximal and their most distal parts are separated, while they are coalesced in the major part of their length; 
the thread bearing the bulla is short and consists distinctly of two coalesced threads; the bulla (fig. 2 b) 
is of moderate size and shaped as a circular disk with both sides convex excepting towards the margin, as 
the marginal part of the bulla is quite thin. — Maxillipeds rather small (fig. 2c), inserted between and a 
little behind the maxille; their first chitinized joint (fig. 2 h) is more than two and a half times as long as 
broad, with the inner margin curiously sinuate, showing a more proximal somewhat feeble impression and 
much beyond the middle a rounded incision with a small but robust and curved, acute process (fig. 2 i); 
the inner margin between these two incurved parts and between the distal incision and the claw shows a 
most peculiar structure, which to some degree may remind one of the surface of a file; the “claw” is two- 
thirds as long as the preceding joint and consists of a slender joint which has a small but strong, curved 
spine on the lower surface towards the outer margin and a little from the base; this joint is twice as long 
as the real claw which has a minute spine on its concave margin rather near the base; a fine, somewhat short 
spine is inserted below the claw. 
Measurements. — The ovigerous specimen has the body 11.3 mm. long, the trunk 7.6 mm., the 
posterior processes 6.7 mm., the preserved part of the maxilla 28.7 mm., the ovisacs 8.4 mm. In the other 
specimen the body is 9mm., the trunk 6.5 mm., the maxille 13 mm., the posterior processes 6.5 mm. 
Male. — Body, seen from the side (fig. 2 k) somewhat slender and very moderately curved at the 
middle. Carapace well defined. Trunk divided into five very distinct segments, about as long as the cara- 
pace. The caudal rami even a little longer than the two posterior segments together, slender, nearly spini- 
form and a little curved. 
Antennule 4-jointed, slender. — Antenne a little shorter than the antennule (fig. 2 k); basal joint 
short (fig. 21); endopod oblong-ovate, with at least 2 small spines remote from the rounded end; exopod 
considerably longer than the endopod, seemingly 3-jointed, but the first joint proximally imperfectly marked 
