444 Rev. Canon Norman — A Month on 



"■ Fam. II. CyntMadae. 



" Subfam. Sttelin^. 



"2. Polycarpa ijomaria^ Sav. (?). 



" About two dozen specimens from Rodberg-, 150-250 

 fathoms, and several from Bergen Fiord (.4. M. N., 1878). 

 These agree in ahnost all anatomical details with British 

 specimens of P. poman'a, but the branchial sac has no inter- 

 mediate horizontal membrane across the meshes. However, 

 1 do not lay great stress upon tliis, and I feel pretty sure that 

 the specimens belong to Polycarpa pomaria. 



" 3. Polycarpa pusilla, Herdman *. 



" Four specimens from Rodberg, 250-300 fathoms, and 

 one specimen (in regard to which I am still a little in doubt) 

 from Trondhjem, shallow water. This species was only pre- 

 viously known from the North Atlantic, 40 miles off Valentia, 

 Ireland, 110 fathoms. 



" Fam. III. Ascidiidse. 

 " 4. Ascidia compressa, O. F. ililiill. 



"Three specimens from Trondhjem, 20 fathoms, and Rod- 

 berg, 40-70 fathoms, and one from Rodberg, 20-40 fathoms. 

 These are all rather small, an inch to an inch and a half in 

 length, but agree well with large specimens from the north of 

 Norway. They have the pharyngo-cloacal slit in the 

 branchial sac like that of A. mentuia. I am inclined to think 

 that the A. ohJiqua of Alder may be this species, and 

 A.faJcigera, Herdman, from off Nova Scotia is at least very 

 closely related. 



" 5. Ascidia pleheia^ Alder. 



" Two specimens, about half an inch long, from Trondhjem, 

 shallow water. Also two smaller specimens, in regard to 

 which I have some doubt, from Rodberg, 100-200 fathoms. 

 There are also a few other small Ascidians, which I consider 

 too young to identify with certainty. 



" 6. Ascidiella i-enosa, O. F. Miill. 

 " Trondhjem, shallow water. 



* " Report Tuuicata ' Liglitning: ' and ' Porcupine' Expeds.," Trans, lioy . 

 Soc. Edin. vol. xxxii. 1884, p. 224, pi. xxxv. figs. 4-6. 



