8fi CEYLON PEARL OYSTER REPORT. 



psammia michelini (with Gephyreans), Ckvryophyllia sp., Lobophytum pauciflorum, 

 Sclerophytum (? n. sp.), and Alcyonium pachycladis ; 



Hermione sp. and other Annelids ; Asterina cepheus and Echinanthus sp. ; 



Dexamine sp. and other Amphipods ; 



Vertagos pharos, and various undetermined Molluscs ; 



Branchiostoma lanceolatum, var. belcheri (several) and Rhodosoma (? papillosum). 



STATION LXVIIL From off Coppeluddi southwards to Navakaddu Paar ; depth 8 

 to 18-g- fathoms; bottom Nullipores (Lithothamnion fruticuloswni), Coral and 

 muddy Orbitolites sand ; three hauls of dredge. 



Orbitolites complanatus and other Foraminifera ; 



Aidetta aurantiaca, Axinella tubulata; 



Various living Corals Cceloria sp., Madrepora (sev. spp.), Fungia crassitentaculata, 

 Flabellum sp. ; 



Colochirus sp. (?) ; 



Pagurids and various small Crabs ; 



Molluscan shells (undetermined), Doris sp. (with black branchiae). 



A Tow-net gathering yielded many Copepoda of a bluish colour, including 

 Pontellopsis armatus, Pontellina plumata, Labidocera kroyeri and L. acuta. 



On March 20th Mr. Hornell and I were on our way back to Colombo, on the 

 " Lady Havelock," with a cargo of oysters for Galle. We dredged at two points, (l) 

 on the north end of Chilaw Paar, just north of Station V., and (2) off Negombo. At 

 the latter spot we were again on the bed of oysters we had found on January 31st 

 (Station I.) and obtained some young (about 6 months) on a bottom of coarse yellow 

 sand containing Cavlerpa plumaris and Halophila ovata. At the Chilaw Paar 

 locality we had three hauls which are united as 



STATION LXIX. On and to the east of the north end of Chilaw Paar ; depth 8 to 

 1 1 fathoms ; bottom yellow quartz sand, with some Coral fragments. Yellow 

 Algfe with Oyster-spat ; dredged. 



Heterocyathus cequicostatus (with Gephyreans) ; 



Echinodiscus auritus, Clypeaster humilis, Actinometra sp. (deep olive-brown with 

 yellow tips to pinnae, harbouring an olive-brown Alpheus striped with grey) ; 



Aspidosiphon corallicola, Lumbriconereids and other Worms ; 



Balanus sp. , Amphipods and some Decapoda ; 



Large and small Pearl Oysters and some other common Lamellibranchs, gelatinous 

 Nudibranchs {Melibe fimhriatd) ; 



Large colony of a reddish Polystyelid, many Leptoclinids (white and drab), 

 Branchiostoma lanceolatum, var. belcheri (numerous). 



A Tow-netting at the same locality gave us, amongst other Copepoda, the large 



