TUNIC ATA. 343 



Salpa runcinata-fusiforinis, Oham.-Cuv. 



Considerable numbers of both the solitary and tbe aggregated forms were found 

 along with the last species both in Palk Bay and also on the West Cbeval and Periya 

 paars. Tbe solitary form reaches 30 millims. and the aggregated 24 millims. 



In some hauls of the tow-net taken oft' Negombo at Station I. some small specimens 

 of both the solitary and the aggregated form (reaching only 9 millims. or 10 millims.) 

 were obtained. 



Salpa democratica-mucronata, Forsk. 



Some of the aggregated form were taken in the bay at Galle in February. Many 

 of both solitary and aggregated forms were obtained off Negombo at Station I. with 

 the last species. A few occurred also iu Palk Bay. 



Family: DOLIOLIDiE. 

 Doliolmn sp. (?). 



Unfortunately the specimens of Doliolum are no longer in the collection, but the 

 genus was noted as being present at the following localities : 



On West Cheval and Periya paars (" nurse-form with broad bands"). 



Galle Harbour, February 17 (" small adult form"). 



The genus can therefore be recorded from both ends of the island. 



Family : APPENDICULARIID.&. 

 Oikopleura sp. (?). 



A small species of Oikopleura, with no noticeable characteristic features, 

 occurred : (l) off Negombo, Station I. many small individuals ; and (2) Galle Bay, 

 February 17. 



One of the specimens obtained at Galle was larger than the rest, had a large flat 

 pointed tail bearing two crimson spots near the end. There is some violet jjigment 

 in the branchial sac and a yellow spot at the anterior end of the endostyle. We do 

 not yet know the permanence and the value of these pigments in classification. 

 Dr. A. Willey got bright yellow and brilliant blue specimens in New Britain, and 

 Mr. E. T. Browne found an Oikopleura with crimson pigmentation at Valencia, in 

 Ireland. All that I can do at present is to record that the genus Oikopleura (probably 

 two species) occurs round the coast of Ceylon. 



