ANOMURA. 213 



PAGURIDEA. 

 Family : COENOBITID^E. 

 Coenobita clypeatus, Latreille. (See Alcock, 1.) 



On Watering Point, Galle, Station XXXVII. One large male, carapace measuring 

 4 - 5 centims. This is a common form in the Indian Ocean, but apparently has not 

 been previously recorded from Ceylon. 



Coenobita rugosus, Milne-Ed w. (See Alcock, 1.) 



Localities: (l) Foul Point, Trincomalee, Station XXV. ; (2) on Watering Point, 

 Galle, Station XXXVII. : (3) Kattanattu Point, on shore ; (4) Welligam Bay, 

 Station XXXIV., on shore. 



The collection contains a large series of this common species, many of which are 

 females bearing eggs. The average length of the carapace is 3 centims. The 

 specimens from Watering Point at Galle, Kattanattu Point in the Gulf of Manaar, 

 and near Mirissa in Welligam Bay, were collected in rough ground at the top of the 

 beach. Professor Herdman's notes contain the following sentences in regard to 

 Welligam : " Pagurids of several species, some inhabiting the shells of Helix and 

 other land Molluscs, were very common on the upper part of the beach and in the 

 cocoa-nut plantations beyond. A crowd of several dozen were found congregated 

 upon a small heap of dung, evidently feeding. Others were sheltering in numbers 

 about the roots of the trees." 



All the specimens, however, belong to C. rugosus, and the shells they inhabit have 

 been identified by Mr. E. Standen, as follows : Ranella bufonia, Ranella granifera, 

 Littorina scabra, JS T assa sp., Sistrum spectrum, Sistrum sp., Turbo argyrostoma, 

 Purpura, persica, Nerita sp., Trochus sp., Cantharus sp., Ra/pana bidbosa, Murex 

 trilobus, Pyrula vespertilio, Natica sp., Natica monile, Ampularia sp., Helix 

 hcemastoma, Cyclophorus menkianus, Tritonidia nodosa. 



Family : PAGUEID^E. 



Diogenes investigatoris, Alcock (1). 

 Localities : (1) Gulf of Manaar, under 10 fathoms ; (2) Palk Bay, Station XVIII. , 

 7 to 8 fathoms. Several small specimens. Carapace measuring about 5 millims. 

 Found inhabiting shells of Minolia sp., Ranella argo, and Buccinum pus ilia. This is 

 a new record for Ceylon. 



Diogenes rectimanus, Miers (12). 



Localities : (1) On coral reefs and pearl banks in Gulf of Manaar; (2) off Foul 

 Point, Trincomalee, Station XXV., 8 fathoms. Six specimens found inhabiting shells 

 of Minolia terebra, Minolia sp., Terebra duplicata, Sistrum sp>ectrum, Eburna 

 caniculata, and Cancellaria antiquata. This is a new record for Ceylon. 



