MARINE CRUSTACEANS. 709 



slightly bisinuate, strongly convergent to an apex of very moderate breadth, with four spines 

 on what may be called the truncate part, but another on each side not quite in line with the 

 four, yet completing the series. The distal part of the whole margin is fringed with rather 

 short setae and about eighteen are sprinkled on the surface. 



The eyes are large and dark. The first antennae have the third joint at least as long 

 as the composite first and second. The ten- or eleven-jointed flagellum is rather longer than 

 the peduncle, and the whole appendage longer than the peduncle of the second pair. In 

 that the fourth joint is longer than the first three combined, the fifth considerably longer 

 than the fourth, the eighteen-jointed flagellum a good deal longer than the peduncle. 



The frontal plate is pentagonal. The epistome stretches on either side much beyond 

 the short and nan-ow upper lip. The mandibles as mounted in situ with their cutting edges 

 under the lip appear to be much like those in Lanocira. The first maxillae have a slender, 

 blunt-headed inner plate, and two strong spine-teeth at the apex of the outer plate. The 

 second maxillae end in a smooth ovoid joint with the narrow end uppermost. The maxillipeds 

 are short and compact, a little more robust and with a larger seventh joint than in the 

 female Lanocira rotundicauda. 



The limbs of the peraeon differ little from the pattern of those in the preceding genus, 

 except that the hinder peraeopods are more slenderly built, with the apical spines of the 

 sixth joint more strongly spinose, and the sixth joint more elongate. 



The inner branch of the uropods reaches considerably beyond the telsonic segment. It is 

 fringed with nine spines and numerous setae. The outer ramus is much shorter and much 

 narrower, with eight spines and many setae. Each ramus has a little notch, clearly apical 

 in the outer one, and occupying the outer angle of the inner one. 



Colour, light with brown speckling. 



Length, about 5 mm., by a breadth of about 2'5 mm. 



Locality. Hulule, Maldive Islands. A single specimen, female with young. 



Specific name from the locality. Hansen's A. krebsii was from the West Indies, his 

 A. insularis from Samoa. 



Fam. Cymothoidae. 



For the limitation and extension in which this family is accepted I may refer to the 

 discussion of the sjmonymy in South African Crustacea, Part 1, p. 55, 1900. 



Gen. Cymothoa, Fabricius. 



Cymothoa, 1793, Fabricius, Entomologia systematica, Vol. ii. p. 503; 1884, Schiodte and 

 Meinert, Naturhist. Tidsskr., Ser. 3, Vol. xiv. p. 223. 



The synonymy of the genus could be produced to a considerable length, but would be 

 inappropriate here. 



8. Cymothoa horhonica, Schiodte and Meinert, 1884. 



Cymothoa borhonica, Schiodte and Meinert, Naturhist. Tidsskr., Ser. 3, Vol. XIV. pp. 226, 282, 

 PI. X. figs. 7-10. 



91—2 



