1898.] A. Alcock — Garcinological Fauna of India. 85 



Surface of carapace uniformly covered with granules which are 

 visible to the naked eye and on the antero-lateral parts of the carapace 

 are vesiculous : the upper and outer surfaces of the wrist and hand, and 

 of the corresponding joints of the legs, are closely granular to the naked 

 eye, the granules of the hand being arranged in longitudinal series. 



As in all the Indian species of Carpilodes except 0. tristis, the 

 frontal and supra-orbital borders are cut off from the rest of the cara- 

 pace by a sinuous groove which also includes the two front lobes of the 

 four-lobed antero-lateral border, and the gastric region is longitudinally 

 5-lobular. 



Transverse grooves running from the last two intervals between 

 the lobes of the antero-lateral border cut off, respectively, (1) the hepatic 

 from the branchial regions, and (2) the first branchial lobule from the 

 rest of the branchial region. All the lobules are strongly convex. 



The cardiac region is not defined, and there is no lobulation of the 

 posterior moiety of the carapace. 



Colours in spirit — pink, fingers purplish-brown with white tips. 



3 specimens from the Cocos Islands (Andamans). 



9. Carpilodes vaillantianus, A. Milne Edwards. 



Carpiloxanthus vaillantianus, A. Milne Edwards, in Maillard's l'ile Reunion 

 Annexe F, p. 3. (A. M. E.) 



Carpilodes vaillantianus, A. Milne Edwards, Nouv. Archiv. du Mus. I. 1865, 

 p. 231, pi. xi. figs. 3-3b. Haswell, Cat. Austral. Crust, p. 57 : Miers, Zool. H. M. S. 

 " Alert," p. 529 : de Man, Archiv. f . Natnrges. LIIL 1887, i. p. 235 : Ortmann in 

 Semon's Zool. Forschungsr. (Jenaische Denksch. VIII.), Crust, p. 51. 



This species, if it is really distinct from C. rugatus, differs from the 

 latter in the following particulars : — 



(1 ) the granulation is confined to the antero-lateral parts of the 

 carapace : 



(2) the lobules of the carapace are less convex : 



(3) the furrow that cuts off the anterior branchial lobule does not 

 meet the furrow that bounds the gastric region. 



Among 17 specimens in the Indian Museum there is a good deal of 

 variation of these characters ; so much so, that some of the specimens 

 might almost be referred to C. rugatus, especially to the " Astrolabe " 

 figure. 



Five specimens from the Andamans, three from Muscat, two from 

 Mergui ; (the others from Mauritius, Samoa, and Viti). 



10. Carpilodes margaritatus f A. Milne Edwards. 

 Carpilodes margaritatus, A. Milne Edwards, Nouv. Archiv. du Mas. IX. 1873 



