'15 



i4- Ses'arma (Chiromantes) bidens (de Haan). 



Literature: TESCH, Zool. Med. Mus. Leiden, v. 3, 1917, p. 132. 

 Stat. 131. Karakelang, Talaut Islands. 4 <ƒ, 1 O with eggs. 



The two egg-bearing 9 are °f very different size, one being 17 mm., the other only 

 12.5 mm. long. The carapace of all the specimens is of a nearly uniform bluish-violet colour, 

 the legs are mottled with blotches of the same hue on a greenish ground colour and the chelae 

 are scarlet-red. 



Sarmatium Dana. 



185 1. Sarmatium Dana. Amer. Journ. Sc, v. 12, p. 288. 



1S53. Metagrapsus H. Milne-Edwards. Arch. Mus. Paris, t. 7, p. 160. 



1. Sarmatium punctatum (A. Milne-Edwards). 



Literature: Tesch, Zool. Med. Mus. Leiden, v. 3, 1917, p. 221. 



Stat. 131. Karakelang, Talaut Islands. 1 <ƒ. 



In colour t-his species much resembles Sesarma bidens (from which of course it widely 

 differs in many respects); the walking legs are, however, mottled with much larger and rounded 

 reddish-violet blotches. 



Clistocoeloma A. Milne-Edwards. 

 1873. Clistocoeloma A. Milne-Edwards. Nouv. Arch. Mus. Paris, t. 9, p. 310. 



1. Clistocoeloma tectum (Rathbun). 



Literature: Tesch, Zool. Med. Mus. Leiden, v. 3, 1917, p. 222, pi. 17, f. 3. 



Stat. 131. Karakelang, Talaut Islands. 1 cf> 3 9 ( one °f these with eggs). 



Though the 3 9 are all apparently adult, only one of them is bearing eggs. The characteristic 

 black colour of the animal renders it very distinct. 



Metaplax H. Milne-Edwards. 



1852. Metaplax H. Milne-Edwards. Ann. Sc. Nat. (3) t. 18, p. 161. 

 1856. Rhaconotus Gerstaecker. Arch. Naturgesch., Jahrg. 21, p. 142. 



The oblique piliferous ridge running diagonally across the merus and ischium of the 

 external maxillipeds certainly places this genus among the Sesarminae, though Milne-Edwards 

 himself has preferred to regard Metaplax as closely related to his section "Gonoplacés vigils" 

 :ontaining such genera as Macropkthalmus, Cleistostoina etc. Consequently some subsequent 

 authors ranged the genus among the Ocypodidae. De Man in 1888 was the first to recognize 

 the identity of Rhaconotus to Metaplax. which former genus had been rightly referred by its 

 author to the Sesarminae. 



