206 



Family Dendronotxdce. 

 Dendronotus arborescens (Miiller). 



Doris arboresccns, O. F. Miiller (1776) ; and O. Fabricius (1780). 



Tritonia arhorescens, Cuvier ; and Gould (1845). 



Ti'itonia Reiinoldsii, Couthouy (1838). 



Dendronotus arhorescens (Alder and Hancock, 1850) ; Gould (1870). 



Dendronotus Beynoldsii, Stimpison (1860). 



Grand Manan. " Fine large specimens are taken at low water, and in all 

 parts of the laminarian zone, on rocky bottoms." "The most common 

 variety is white or colourless." " The ova were deposited in August " 

 (Stimpson). Le Have Bank, N.S., in 45 fathoms, U.S. Fish Commission, 

 1872 (Smith and Harger); Halifax Harbour, 1877 (J. M.Jones). Strait 

 of Belle Isle, 30 to 40 fathoms, (Dr. J. W. Deeks) ; Henley Harbour, 

 Chateau Bay, Labrador, in 4 fathoms, 1864 (Packard). 



Dendronotus robustus, Yerrill. 



Dendronotus rohuslus, Verrill (1870 ; also 1879 and 1883). 

 Dendronotus velifer, G. O. Sars (1878) ; fide Verrill. 



The type of D. robustus is a single specimen found at " Whale Cove, 

 Grand Manan, on sea weeds in a pool near low-water mark," by Mr. Oscar 

 Harger in 1870, and Professor Verrill says that the species is now known 

 to occur from " Vineyard Sound to Nova Scotia " from low-water mark to 

 98 fathoms. J. M. Jones, in his List of the Mollusca of Nova Scotia, cites 

 the species as having been taken thirty miles south-east from Chebucto 

 Head, N.S., in 110 fathoms. 



Family rolyceridof. 

 PoLYCERA Lessonii, Orbigny. 



Polycera Lessonii, Orbigny (1837) ; and Gould (1870). 

 Doris ■illuminata, Gould (1841). 

 Poli/ccra illuminata, Stimpson (1860). 



Common in Casco Bay and Bay of Fundy, from low-water mark to 20 

 fathoms (Verrill). 



IssA LACERA (Miiller). 



Triopa lacer, Miiller (non L.) teste Loven (1846) ; et auct. 

 Issa lacera, Bergh (1880) ; and Verrill (1882). 



" Off Halifax, Nova Scotia, 90 to 92 fathoms," U. S. Fish Commission, 

 1877 (Verrill). 



