265 



CHORDATA. 

 UROCHORDATA (TUNICATES OR ASCIDIANS).* 

 Family Didemnidce. 

 Leptoclinum albidum, Verrill. 



1871. Amer. Journ. Sc. and Art.s, Third Series, vol. i, p. 446. 



"Grand Manan, 10 to 15 fathoms, 1870 " (Verrill) ; abundant in the Bay 

 of Fundy, low-water to 80 fathoms," U. S. Fish Commission, 1872 (Verrill). 

 Between Pictou Island, N.S., and Cape Bear, P.E.I., Whiteaves, 1873 

 (Verrill); and " IMingan Island.s, 10 fathoms", 1861 (Verrill). Labrador 

 coast, Packard (Verrill). 



Leptoclinum albidum, var. luteolum. 



Leptoclinum luteolum, Verrill (1871). 

 Leptoclinum albidum, var. luteolum, Verrill (1879). 



" Eastport, Me., and Grand Manan, with the preceding species, 1870" 

 (Verrill) ; Bay of Fundy, low-water to 80 fathoms, common, U. S. Fish 

 Commission, 1872 (Verrill) " Under the name of Didemnium roseum, 

 Sars " (which is said to have been " found frequently encrusting fucoids in 

 masses an inch in diameter, in 10 fathoms, Hopedale, and on the whole 

 coast " of Labrador) Verrill thinks that Packard probably included both 

 this and the typical form of the species. 



Family Polyclinidoi. 

 Aplidium despectum, Herdman. 



1886. H.M.S. Challenger Reports, Zoology, vol. xiv, p. 210. 



H.M.S. Challenger, Station 48 (May 8, 1873) Le Have Bank, oflF Nova 

 Scotia, in 51 fathoms (Herdman). 



Amaroucium pallidum, Verrill. 



Amouroucium pallidum, Verrill (1871). 

 Amaroccium pallidum, Verrill (1873). 

 Amorceciuni pallidum, Verrill (1879). 



" Eastport Harbour and Bay of Fundy, low-water to 80 fathoms," U. S. 

 Fish Commission, 1872 (Verrill). Gulf of St. Lawrence, eight miles south- 



* Nearly the whole of the Tunicates in the writer's St. Lawrence dredgings were deter- 

 mined many years ago by Professor Verrill. 



