TO JJS'DLl^; CAKCIXOLOGY. 425 



meuciug at the base of the fifth right leg-, it curves completely over the abdoiueu as far 

 as the base of the fifth left leg. 



Length of body in a male 9 nun., riglit chelipede 12 min., left chelipede lO'S mm. A 

 female is about the same size. 



This small species comes nearest to C. Sharreri, A. Milne-Edw., common in deep 

 water oflf the east coast of the United States, but is distinguished at once from the 

 American form by its non-ciliated ambulatory (or perhaps swimming) dactyli and 

 propodi, and by its longer and more slender male organ. The only prcvionsly known 

 Indo-Pacific species is C. uiisirctUs, Henderson, from the Arafura Sea and Piji, in which 

 the chelipedes are shorter and quite differently armed, Avith the ambulatory legs not 

 specially flattened. 



Genus Spiropaguiius, Stimpson. 



230. Spiropagtjrus spirigek (De Haau). 



Pagm-us spiriger, De Haan, Crust. .Tapoii. ]>. .'200, tali. xlix. fig. 2 (1850). 

 Gulf of Martaban ( Oates) ; Madras, not vmcommon [J. R. H.). 

 Llstrlbntioii . Malay Archipelago, China, Japan, Torres Strait, Admiralty Is. 



Genus Eupagurus, Brandt. 



231. Eupagurus zebra, u. sp. (PI. XXXIX. tigs. 12-1.5.) 



Muttuwartu Par, a single specimen 13 mm. long {Thurston). 



This specimen is preserved in the same bottle Avith a Hydroid, ^[(jlaophenia urens, 

 Kircheupauer, to which several examples of Avicnla zchra, Kecve, are attached, and 

 which have a similar coloration, so that the Mollusc and Crustacean probably live 

 together, and are protected by the similarity of their markings to tlie dark ramidi of the 

 Hydroid. In the British Museum there is a much larger specimen, tak(Hi by H.M.S. 

 ' Penguin,' on Holothuria Bank, N.W. Australia, at a depth of 53 fathoms, I'rom which 

 the following description and also the figvu'es are taken. 



The colour-markings of this very beautiful species are so striking as to distinguish it 

 at once from all other known species. They take the form of dark l)lood-re(l parallel 

 lines along both surfaces of the tAvo pairs of ambulatory legs, on the hift or smaller 

 cheUpede, on the merus and inner margin of the right chelipede, on the sitles of the 

 anterior portion oJ* the carapace, on the upper suriace of the antcnnal [)eduncles, and as 

 a thin line, interrupted on each segment, along either side of the entire antennal ilagella. 

 The ocular cornete are dark green, and the contiguous portion of the eye-stalk is 

 encircled l)y a yellow band. Tlie median frontal projection and tlie ophthalmic scales 

 are yellow. 



The median frontal projection is prominent and acute, reaching to alwut the middle of 

 the ophthalmic scales, which latter are small, subtriangular, and entire. The eye-stalks 

 are long, and but little shorter than the antennal peduncles. The antennal acicle is 

 slender and slightly curved, reaching the level of the end of the i;ye-st<ilks. The 



