74 CEYLON PEARL OYSTER REPORT. 



Pearl oysters (both large and small), Modiola sp. (in gelatinous nests), Murex 

 tenuispina, Melibe sp., Doridium sp., Hexabranchus sp., and small Octopods. 



On March 10th we had a long day of dredging (17 successful hauls) on and outside 

 Dutch Modragam, Karativo, and Col. Hamilton's Alentura paars, all lying outside 

 the northern part of Karativo Island. 



The hauls may be grouped into three stations (LVI. to LVIIL). 



STATION LVI. West of Kodramallai Point, about 10 miles off shore, on and around 

 Dutch Modragam Paar ; depth 8 to 9 fathoms ; bottom coarse quartz sand, 

 with red weed {Hypnea musciformis, &c.) in places on which were immense 

 quantities of pearl-oyster spat ; 4 hauls of dredge. 



Virgularia sp. (several) ; 



Laganum depressum, Echinodiscus auritus ; 



Sipunculus sp., Hermione ridgewayi, n. sp., Lepidonotus carinulatus, Ghlosia 

 ceylonica, Sabella plueotccnia, Sigalion mathildce ; 



Leucosia sp. , and other small Crabs ; 



Pearl oysters (young, 6 months old), Aplysia sp. ; Asymmetron cingalense. 



STATION LVII. To the west of last station, outside Dutch Modragam Paar; 

 11^ to 36 fathoms; bottom Orbitolites sand, Nullipores and dead Corals; 

 5 hauls of dredge. 



Orbitolites complanatus, Heterostegina depressa ; 



Petrosia testudinaria and other sponges ; 



Stephanoseris rousseaui (with Gephyreans), Pennatulids, Gorgonids, and Reef 

 Corals ; 



Phyllacanthus imperialis, Laganum depressum, Clypeaster humilis, Fibtdaria volva, 

 Actinometra parvicirra, Antedon bella and A. milberti; 



Nemertines, Aspidosiphon sp., Sigalion mathildce (in Coral), Elasmopus sub- 

 carinatus, and other Amphipods ; Isocardia sp. and Dorioi^sis sp. 



STATION LVIIL Further south than last Station, on and outside Karativo Paar 

 and the adjacent Colonel Hamilton's Alentura Paar ; depths mainly 9 to 26 

 fathoms, but once or twice the dredge may have slipped into deeper water we 

 were close to "out of soundings" ; bottom Orbitolites sand, and some Nullipore 

 and Coral fragments ; 8 hauls of the dredge. 



Orbitolites complanatus, Heterostegina depressa, Rotalia ealcar, Alveolina boscii; 



Various sponges ; 



Gorgonia sp., Juncella juncea, Sphenopus marsupialis, Corals (from living reef); 



Antedon sp., Holothuria atra, Stichopus chloronotus, var. fuscus ; 



HyalincBcia sp., Distomum sp. (on gills of pearl oyster), Stylochus sp. ; 



Lysianassa (? n. sp.), Lcptophoxus uncirostratus, Elasmopus subcarinatus, and a 

 new species of Lambos ; 



