250 Mr. W. F. Lanchester on some 



first described from Mauritius by Mr. Miers and later from 

 Amboina by Dr. de Man, which, if my diagnosis be correct, 

 would point to a disappearance of the eyes in this species ; 

 for the cornea?, which in Mr. Miers's younger example are of 

 normal size, are in this one small and out of all proportion to 

 their peduncles, which are flattened and produced, so as to 

 overlap them on all sides. 



Since my return from the Straits I have been occupied in 

 describing the Brachyura collected there by Mr. Bedford and 

 myself: the paper dealing with tliese was read to the Zoolo- 

 gical Society in June, and will appear in the ' Proceedings ' of 

 that Society later in the year. This being so, I have contented 

 myself with giving references to that paper in cases where, in 

 this, species are mentioned which I have already described. 



As regards what few measurements I have taken, I should 

 say that, except where otherwise stated, I have measured the 

 breadth between the bases of the last antero-lateral spines and 

 the length between the posterior margin and a line joining the 

 bases of the internal supraocular spines ; my reasons for this 

 I have given in my earlier paper. 



It may perhaps be advisable to add that the numbers 

 given in Roman figures with each species correspond to 

 labels affixed by Mr. Shelford, and are inserted for his better 

 convenience in identifying the corresponding examples in his 

 museum. 



Brachyura. 

 I. Genus Atergatis, de Haan. 



1. Atergatis integer rimus, Lam. 



Cancer integerriums, Lam. Hist. Auim. saus Vert. t. v. p. 273 (1818). 

 Atergatis integerriinus, de Haan, Crust. Jap. p. 45, pi. xiv. fig. 1 

 (1839) ; A. M.-Edw. Nouv. Arch. Mus. t. i. p. 235 (1865). 



Distr. Philippines, Malaysia, Siam, Java, Tuticorin. 



No. CCLXXII. Ilab. Singapore. 



A female. 



Dim. : Length 34'5 millim,, breadth (greatest) 55*5. 



2. Atergatis Jloridas J Ruraph. 



Cancer Jloridus, Rumphius, d'Amboinscbe Rariteit-Katnmer, p. 16, 



pi. viii. fig. 5 (1705). 

 Cancer ocgroe, Herbst, Naturgesch. d. Krab. pi. liv. fig. 2 (1798). 

 Atergatis floridus, A. M.-Edw. Nouv. Arcb. Mus. t. i. p. 243 (1865). 



Distr. Ceylon, Malay Archipelago, Duke-of-York Island, 

 Samoa, Clairemont. 



