the Trondhjem Fiord. 443 



whether taken by myself or by the ' Porcupine ' Expedition 

 of 1869. The example procm-ecl is a narrow and very tumid 

 form, measuring H inch long, li inch broad, and 1 inch 

 deep ; but, if my memory deceives me not, I saw larger speci- 

 mens than this in the Trondhjem Museum, and fully the 

 size of Davidson's measurement of his largest specimen. 

 Fischer and CEhlert have figured on pi. iv, of the ' Tra- 

 vailleur ' Report a very remarkable triangular form of this 

 species, with almost straightly sloping sides and straight 

 anterior margin, where it is of great breadth. Indeed, 

 judging from the figures I should have tliouglit that the form 

 might possibly be referable to W. Jloridana, Pourtales, rather 

 than to W. septtgera. 



3. Waldheimia cranium^ Miiller. 



From 70 fathoms downwards, Trondhjem and Rodberg. 

 This species I find generally distributed in the West Norway 

 fiords, and I have also taken it in Lang Fiord, Sydvaranger, 

 close upon the borders of Russia. 



4. Crania anomala^ Miiller. 



In 40-250 fathoms. Specimens from the precipices are 

 large. 



TUNICATA. 



As there were several Tunicata which I was unable to 

 determine I sent the animals of this class to Professor 

 llerdman, who has kindly examined them and sent the 

 following notes. They will be more fully treated of in a 

 paper wliich Professor Herdman has in preparation on tlie 

 Tunicata of Norway. 



"AsCIDIiE SiMPLICES. 



" Fam. I. Molgulidse, 



" 1. Molgida eugyroides^ Traustedt*. 



" Three specimens from Rodberg, 250-300 fathoms. 

 These agree so well with Traustedt's description and figures 

 that T cannot separate them, although M. eiujijroides has only 

 been found previously off Bahia, South Atlantic. 



* "VestindLske Ascidia3 simplire^," Viden^k. Mcddcl. I'ru don Nutuili. 

 Foren. i Kjobenhavn, 1882, p. .37, i^l. v. figs. 1-3. 



