INVERTEBRATE FAUNA OF LABRADOR. 283 



• „™> nf the same length but slenderer, and approximate on each side of the 

 P Tnmr fthe odv The do?sal papilla are massed continuously on the sides of the 

 Tot four d^pm the middle, slightly" roseate, with the central biliary (!) tube deep red ; 

 tip white ; tentacles and body white, with a very faint roseate hue. 



Dendronotus arboreseens Fabe. 



Several at a depth of four fathoms in Henley Harbor. 



Cylichna alba Lovmj. 



Several large specimens with a thin brown epidermis, and ^differing in no >«***£ 

 one from Greenland, occurred in ten to fifteen fathoms, mud and sand ; Canbou Island, 

 Chateau Bay fifty fathoms. Sloop Harbor, seven fathoms, sand. 



Bulla pertenius Migh. 



This species was taken in the vicinity of Belles Amours, in eight fathoms, muddy bottom. 



Bulla occulta Migh. 

 Bulla scalpta Reeve, non Belcher. 



Chiton marmoreus Fabk. 



Found all the way from low water to a depth of fifty fathoms. 



Chiton albus Linn. 



Several specimens of this shell were dredged in fifty fathoms of water. 



Tectura testudinalis Mull. 

 This occurs largest and most abundant at low-water mark. The young were dredged in 

 fifteen fathoms. ^^ ^^ (Fabr , 



Square Island, in thirty fathoms on a hard bottom; near Strawberry Harbor, in twenty 



° ' Diadora noachina Gray. 



Several specimens taken at the Straits of Belle Isle in ten to fifty fathoms ; at Square 

 Island in thirty fathoms. ^^ ^^ ^ 



Dr. Dawson has detected this species in sands examined for Foraminifera, as also the fol- 

 lowing species. Adeorb . g cQ8tulata Siimps 



Both this and the preceding species occurred at Caribou Island. 



Margarita einerea Gould. 



Grows largest on sandy bottom in fifty fathoms Caribon Island, Sevan fathoms, hard 

 bottom. Long Island, fifteen fathoms. Square Island, thirty fathoms. 



MEMOIRS COST. SOC. NAT. HIST. Vol. I. Pt. 2. 72 



