I2 i CRUSTACEA COPEPODA. II. 
— Sipho nearly pear-shaped, without suctorial tube, reaching to the base of the maxillipeds. — Maxillulee 
with both rami moderately short, the outer slightly longer than the inner. — Maxille unusually robust; 
maxillipeds robust, especially in the female. — First pair of legs with the exopod very broad, its terminal 
joint with 5 setee and 3 very broad spines; fourth pair of legs with the exopod well developed, normal, while 
the endopod is quite small, 2-jointed. Fifth pair of legs only rudimentary knots. 
Remarks. — The present genus, established on a single new species, agrees with Avrctopontius in 
several features, especially in the reduced state of the endopod of fourth legs, the rudimentary state of fifth 
legs, and the strongly built maxilla and maxillipeds, but it differs sharply in some characters, viz. the anten- 
nule have a much higher number of joints, the sipho has no terminal tube, the genital segment is only moder- 
ately expanded, finally the antennez and maxillule show minor differences. 
12. Metapontius latispinis n. sp. 
(Pl. I, figs. 8 a—8 1.) 
Female. — Cephalothorax about as broad as long (the specimen drawn in fig. 8 a was a little pressed). 
Head four times as long as the free thoracic segments combined, with the postero-lateral angles not produced ; 
these angles are not produced on the first, but a little on second segment. — Abdomen (the caudal rami 
not included) scarcely one-third as long as the cephalothorax. Genital segment (fig. 8 b) somewhat broader 
than long; second and third segments short, together slightly longer than the terminal segment, which is 
distinctly broader than long. Caudal rami (fig. 8 b) broad, lamellar, and as long as the two posterior segments 
combined. 
Antennulee (fig. 8 c) 14-jointed ; second to eighth joint subequal in length; ninth joint as long as seventh 
and eighth together, tenth considerably shorter than the ninth; the joints increase gradually in length from 
the tenth to the thirteenth, while the terminal joint is almost as long as the three preceding joints together 
and shows the vestige of a division at the middle. — Antenne (fig. 8 c) with second and third joints propor- 
tionately short, each much shorter than the fourth joint, which has a very strong lateral spine and 2 terminal 
spines, one among them very thick. — Sipho (fig. 8 c) a little more than twice as long as broad. — Maxillee 
(fig. 8 d) extremely robust; dactylus with claw a little longer than the proximal part, distally very curved 
and with a minute protuberance on the concave margin. — Maxillipeds (fig. 8 e) strong; dactylus about 
half as long again as the claw, and its terminal spine at the base of the claw short and extremely broad. — 
The spines on the natatory legs are very broad; the exopod of first pair (fig. 8 f) considerably longer and much 
broader than the endopod, especially its third joint is very large. The endopod of fourth pair of legs (fig. 8 g) 
only slightly more than one-third as long as the exopod, and its second joint is twice as long as the first. 
Length 1.07 mm. (caudal rami included). 
Male. — Cephalothorax (fig. 8h) much less broad than in the female, a little less than half as long 
again as broad. Head about twice as long as the thoracic segments combined, and these as long as the abdomen 
without caudal rami. 
Antennulee (fig. 8 i) 17-jointed; second to ninth joint very short, tenth joint a little longer than the 
three preceding joints combined, twelfth joint considerably shorter than the tenth and somewhat longer than 
