430 



L. A. BORRADAILE. 



Family Gonoplacidae. 



Subfamily Carcinoplacinae. Genus Litocheira Kinahan, 1858. 



1. Litocheira angustifrons Ale, 1902. Alcock, vi. p. 315'. 

 Taken on the reef at Hulule, Male Atoll. 



2. Litocheira integra (Miers), 1884. Alcock, vi. p. 314. 



Taken on the reef at Hulule, Male Atoll. L. subinteger (Lanchester), 1900 [= Carcinoplax 

 integer de Man, 1887] seems to differ from this species in that: (1) There are three, instead 

 of two, notches on the anterolateral edge. (2) The shape of the anterolateral edge is different, 

 making almost a right angle. (3) The front is narrower. 



3. Litocheira inermis n. sp. (Fig. 111). 



Diagnosis: "A Litocheira whose cephalothorax is almost square, smooth, hairless and 

 microscopically pitted ; the front arched gently, 

 but with a shallow bay in the middle; the 

 anterolateral edges without teeth but showing 

 traces of two faint notches ; the chelipeds short 

 and stout, with one sharp tooth at the inner 

 angle of the wrist and a faint ridge along the 

 lower part of the outside of the hand; and the 

 walking legs stout, with broad end-joints and a 

 beard of hairs on the hinder edge of the last 

 two joints." 



Length of the only specimen (a female): 

 8'5 mm. Breadth : 95 mm. Colour in spirit : 

 yellowish-white. 



One female was taken at Hulule, Male Atoll. 



Fig. 111. Litocheira inermis ; A. whole animal, B. out- 

 side of hand, C, third maxilliped. 



Subfamily Rhizopinae. Genus Selwynia n. 



Among the crabs collected on the reef at 

 Hulule, Male Atoll, was one which by its 



diagnostic features should belong to the Rhizopinae, but for which I am unable to find a 

 place in any of the known genera of that subfamily. In proposing a new genus for it I 

 have commemorated my College and its patron saint. 



Characters of Sehuynia n. gen. : (1) Carapace broadly oval, without teeth or notches 

 on the anterolateral edge, flat, but Mling away in front. Body rather deep. (2) Front 

 narrow, bent do^vnwards, bilobed owing to a deep groove in the middle, continued into the 

 interantennular septum. (3) Eyes well formed and well pigmented, small, stout, not fixed 

 into the small, close-fitting orbits. (4) Antennules fold almost, but not quite, transversely. 

 (5) Antennae short, the flagellum standing in the orbital gap. (6) Third maxillipeds with 

 meropodite roughly square, a little smaller than the ischiopodite ; palp strong, arising nearly 



' For the principle upon which references are given in Aloock's paper on the Indian Catometopes appeared in Journ. 

 this paper see p. 192 of Pt. ii. of this publication. Major Roy. As. Soc. Bengal, ljux. ii. (1900). 



