BOE.EADAILE — REPTANTIA. 263 



21. Upogebia (Calliadne) cargadensis, ST^. n. (Plate 16. fig. 6.) 



Specimens dredged in 30 fathoms at Oargados Carajos belong to a new species, which 

 may be distinguished from the other members of the group of closely related forms 

 which make up the subgenus Calliadne by the following characters: — (1) the rostrum 

 considerably outreaches the eyes and bears five spines on each side ; (2) the antennal 

 stalk outreaches the antennular by its last joint ; (3) the last four joints of the first two 

 pairs of legs are fringed above and below by long hairs ; (4) the first leg has on the 

 moveable finger two teeth inside and several thorns, outside on the hand, two or three 

 sharp thorns near the base below and many on the upper side towards the end, its wrist 

 is smootli save for a tooth on the inner side at the end of the upper edge, and its arm has 

 two or three small thorns below ; (5) the hinder edge of the sixth abdominal segment is 

 smooth, but there is a group of small spines at each hinder angle. 



Length of largest specimen 3 cm. 



In some small specimens, which seem to belong to this species, the upper side of the 

 palm and finger are smooth. These individuals probably represent a variety, for in 

 another specimen of the same size the spines, though fewer than in large individuals, 

 are present. 



Subfamily Callianasslnffi. 



Genus CALLIANASSA, Leach, 1814. 



Subgenus Tetp^a, Dana, 1852. 



22. C allianassa [Trypcea) cristata, sp. n. (Plate 16. fig. 7.) 



Diagnosis. — A Trypcea with the rostrum sharp, nearly as long as the eyes ; the stalks 

 of the antennules longer than those of the antennae, the inner flagellum about twice as 

 thick as the outer ; the great chela simple in shape, hairy on the somewhat hooked 

 moveable finger and along the sharp lower edge, a blunt lobe between the fingers, the 

 wrist nearly square, sharp edged above and below, the arm longer than broad, bearing 

 below a long crest with two large and several small teeth, and on the lower side of the 

 ischium a few small teeth ; and the telson rather shorter than the endopodite of the last 

 limb, which has a broad, gently rounded end. 



Length 1'5 cm. 



A specimen was taken at Salomon Atoll, Chagos Archipelago. 



35^ 



