MARINE CRUSTACEANS. 685 
join the fore part, which is triangular, with very slightly irregular sides; the front also 
triangular but with indications of two teeth at its sides; the eyes showing a small part 
of the cornea at the sides of the front when seen from above; the chelipeds short, slender, 
with narrow, spooned fingers about as long as the palms; and the walking-legs slender, 
with a spine at the end of the meropodite, and the last joint strongly hooked, with a 
group of little thorns underneath at the tip and a fringe of hair all along.” 
Length of longest specimen: 6mm. Breadth: 7mm. Colour: in spirit, pale yellow; 
when alive, legs black-brown, rest of body transparent. 
A female was taken at Minikoi, and a male and female at Hulule, Male Atoll, all on 
the reef. 
Family Maiidae. 
Subfamily Inachinae. Genus Achaeus Leach, 1815. 
2. ?Achaeus spinosus Miers, 1879. Alcock, 1. p. 171’. 
My specimen agrees with Alceock’s and Miers’ descriptions, but the last two pairs of 
legs have strongly curved end-joints. Miers and Alcock only mention the last pair. 
Dredged in Mahlos Atoll in 24 fathoms. 
< frac 
LASS 
RSS 
SS 

Fic. 123. Ocinopus aranea; a. whole animal, b. two of the hairs on the hinder pair of legs, c. one of the long hairs 
on the legs of the second and third pairs, d. hooked hairs. 
Genus Ocinopus de Haan, 1837. 
3. Ocinopus aranea de Haan, 1837. Alcock, 1. p. 183 (Fig. 123). 
The shape of the lobes at the tip of the rostrum in this species varies somewhat. 
A very common crab, taken practically throughout the group in 19—45 fathoms. 
1 For a statement of the principles on which references Alcock’s paper on the Indian Oxyrhyncha appeared in Journ. 
are given in this series of papers see above, p. 192. Major As. Soc. Bengal, uxtv. ii. 2, p. 157 (1895). 
G. IL. 88 
