1916. | S. Kemp: Notes on Crustacea Decapoda. 357 
1. Lateral margins of rostrum anteriorly divergent, 
apex broad, squarely truncate [carapace with 
one mid-dorsal spine in male only ; two pairs 
of lateral spines in both sexes] .. .. candidus, sp. nov. 
2. Lateral margins of rostrum anteriorly conver- 
gent, apex narrow, rounded or pointed. 
a. Rostrum of good size, separating the eyes ; 
carapace with one or more teeth in median 
line; dactylus of second peraeopods not 
narrower than fixed finger. 
i. Carapace pubescent with three teeth in mid- 
dorsal line [four pairs of lateral teeth on 
carapace; lateral process of antennular 
peduncle anteriorly spinose] ... . ptlosus, sp. nov. 
i. Carapace not pubescent with only a single 
tooth in mid-dorsal line. 
Three pairs of lateral teeth on carapace ; 
lateral process of antennular peduncle 
anteriorly pointed ; ‘‘thumb”’ of sub- 
chela formed of a mere articulated 
tooth ... plebs, sp. nov. 
_ No lateral teeth on carapace ; lateral pro- 
cess of antennular peduncle anteriorly 
truncate; ‘‘ thumb ”’ of subchela formed 
of two fecrn closely Paes and not 
articulated ae .. hendersoni, Kemp. 
b. Rostrum exceedingly small, eyes contiguous ; 
carapace without teeth in avian line ; 
dactylus of second peraeopods very slender, 
less than half the breadth of fixed finger ... parvirostris, sp.nov. 
Pontophilus gracilis, Smith. 
1901. Pontophilus gracilis, Alcock, Cat. Indian deep-sea Crust. Macrura 
and Anomala, p. 115. 
1905. Pontophilus gracilis, Stebbing, Marine Invest. S. Africa, 1V, p. 49, 
pl. xxv. 
Pontophilus abyssi, Smith. 
tgol. Pontophilus abyssi, Alcock, Cat. Indian deep-sea Crust. Macrura and 
Anomala, p. 116. 
Pontophilus incisus, sp. nov. 
(Plate vi fie. 1.) 
The rostrum is longitudinally channelled; its sides are almost 
parallel and its distal border, in dorsal view, is strongly concave. 
The actual apex is rounded, but is abruptly deflexed at a right 
angle and can therefore be seen only from in front. The sides of 
the rostrum and the orbital margins are clothed with long hairs 
which partially conceal the eyes. 
On the carapace a shallow groove extends transversely across the 
base of the rostrum. Inthe mid-dorsal line there is a rather obscure 
~ interrupted carina composed of four short ridges. The first of these 
ridges ends anteriorly in a conspicuous tooth just behind the trans- 
verse groove mentioned above; the second, which is very feebly 
developed, usually terminates in a minute denticle - the third is 
