BRACHYURA. 421 



Thalamita wood-masoni, ALGOCK, 1899 A.4, p. 90. 



Locality : 10 miles north of Cheval Paar, one specimen (young ? ). 



Description: The fourth tooth of the antero-lateral margin of the carapace, which 

 ALCOOK describes and figures (A. In vest., pi. xlviii., figs. 1, It/) as rudimentary, is 

 absent in the present example. 



Thalamita oculea, ALCOCK, 1899 A.4, p. 91. 



Localities : Ooral reefs, Gulf of Manaar, 10 specimens ; pearl banks, Gulf of 

 Manaar, 1 9 specimens ; off Mutwal Island, three specimens ; deep water off Galle, two 

 specimens ; off Kaltura, one specimen ; Trincomalee, one specimen. 



Description : O.I. of an ovigerous female = 10 '00. 



/ 



Kraussia nitida, STIMPSON, 1858 A.4, p. 98 (pars). 



Localities : Off Mutwal Island, one specimen (a) ; pearl banks, one specimen (6) ; 

 west of Periya Paar, 17 to 24 fathoms, one specimen (young ? ). 



Description : 



C.I. C.b.-rC.l. Fronto-orb.b.-rC.l. 



(a) adult <?..-.. 12-00 1'04 0'62 



(b) adult ? . . . . 10-00 I'lO 0'62 



Miss KATHBUN ('Bull. Mus. Comp. Zool.,' Harvard, xxxix., No. 5, 1902, p. 132) 

 separates HENDERSON'S nitida from this species and makes for it a new species, 

 Kraussia hendersoni. The specimens of the present collection come under K. nitida 

 in Miss RATHBUN'S sense. They agree with her figure. Miss RATHBUN'S photographs 

 of species of Kraussia are useful (loc. cit. and Ii., 1903). 



This genus is new to the Ceylon fauna. The only other genus of the family 

 Cancridse which I know to have been recorded from Ceylon is Trichopeltarium. 

 represented by a single species (? T. ovale, A.4, p. 99). 



I may note here that I have seen in the British Museum the " type "-specimens 

 described by ADAMS and WHITE in the ' Voyage of the " Samarang" ' (p. 59, 1850) as 

 Trichocera porcellana, and find that the latter name is a synonym of K. rugulosa. 

 DANA puts it as such with a query (Crust., ' U.S. Expl. Exped.,' I., p. 302, 1852). 



Gomeza bicornis, GRAY, 1831. 



Localities : Deep water, off Galle, one specimen (a) ; pearl banks, Gulf of Manaar, 

 six specimens (b to g). 



Description : Examples (6), (c), and (g) are ovigerous females, () is an adult but 

 non-ovigerous female, and (d) to (f) are adult males. 



Variability is high within the species. The present specimens fall into three 

 groups : (l) The non-ovigerous female (a, C.I. = 20) approaches A. MILNE- ED WARDS' 

 figure under name Gomeza viginti-spinosa (' Nouv. Archiv. du Mus. Paris/ vol. x., p. 52. 

 pi. iii., fig. 5, 1874) ; (2) examples (b, C.I. = 15 '5) to (/) agree with DE HAAN'S figure 



