niOM THE GULF OF GUINEA. 99 



Dactylopus latipes, n. sp. (PL X. figs. 38-43.) 



Length 1-25 mm. (l-20th of an inch). Body moderately robust. Fii'st segment of the 

 cephalothorax once and a half the entire length of the other fom* segments; rostrum 

 sliglitly curved, stout, of moderate length. Anterior autennte short, stout, 9-jointed ; 

 first joint large, the fourth provided with a long sensory filament ; the proportional lengths 

 of the joints nearly as in the formula : — 



^5 . 8 . 7 . e . ^ . A . 2 . l . S 

 1 2 3 4 o tj 7 S i)' 



Second foot-jaws short and stout ; a plumose seta springs from near the inner distal 

 angle of the first joint ; the inner margin of the second joint is ciliate, and a small seta 

 springs from the side and near the middle of the same joint (fig. 10) ; the terminal claw 

 is provided Avith a slender seta near the base. Pirst pair of swimming-feet nearly as in 

 Dactylopus tishoides, Clans. The fifth pair consists of large foliaceous plates jmrtly 

 overlapping each other and forming, apparently, a kind of ovigerous pouch for the pro- 

 tection of the ova (fig. 42 ; see also fig. 38). Abdominal segments fringed with small 

 teeth ; their general surface is also more or less hispid. Caudal stylets about equal in 

 length to the last abdominal segment and rather longer than broad. The inner of 

 the two principal tail-setai is equal to the entire length of the abdomen and stylets. 



Hahitut. Accra, in a shore gatliering with Dacfijloims prophiquus, Lauphonte serrata, 

 Stenhella, &c., collected January 16th. 



Dactylopus propinqui's, n. sp. (PI. X. figs. 44-52; PL XI. figs. 1-3.) 



Female. Length '5 mm. (l-50tli of an inch). Body moderately stout. Anterior 

 antennae short and stout, 6-jointed ; the upper portion is produced and forms the base of 

 a long sensory filament. The annexed formula shows the proportional lengths of the 



joints : — 



8 . 5 . 8 . 2 . 4 . r, 



12 3 4 5 



Posterior antennae nearly as in Dactylopus tishoides, Claus (PL X. fig. 47). The first joint 

 of the posterior foot-jaws bears two small spinous seta; on the inner margin and another 

 at the inner distal angle ; a row of small spinous setae extends diagonally from near the 

 outer edge at the proximal end to the upj)er edge near the distal end of the second joint ; 

 the terminal claw is stout and provided wdth a small seta on its inner aspect. The outer 

 branches of the first swimming-feet consist of three nearly equal joints — the middle one 

 being somewhat shorter than the first or third, the last two joints of the inner branches 

 very short and armed with one stout terminal claAV and a long seta ; the exterior margin 

 of both the last two joints bears several small spiuiform teeth (fig. 49). The inner 

 branches of the second, third, and fourth pairs are somewhat shorter than those of 

 Dactylopus Stromii (Baird), but otherwise they resemble very closely the same swimming- 

 feet of that species. The second joint in the fifth pair, which does not extend much 

 beyond the apex of the basal joint, is subquadrangular in outline and furnished with five 



13* 



