OF LABRADOR AND MAINE. 231 



Nullipora polymorph® Linn. This plant occurred abundantly at Caribou Island. At 

 Hopedale it was profusely abundant, growing in large free masses or encrusting shells and 

 stones. 



Eurgechinus drobachiensis Verrill. ( Toxopneustes drobachiensis A. Agassiz. Echinus granulans 

 Say.) Fragments of the shells and numerous spines occurred abundantly at Caribou Island 

 and Hopedale. 



Lepralia Belli Dawson. Encrusting pebbles at Hopedale. One colony also on a shell. 

 The young cells were large, with crowded and sometimes perforate, granulated conical 

 ovicells. The avicularia are situated either in front of the opening, or crowded to one 

 side, and are two in number. Both old and young correspond precisely with a specimen 

 received from Dr. Dawson. 



Lepralia pcrfusa Thompson. This species occurred on the shells of Buccinum cretaceum. 

 It agrees well with the large, oblong and coarsely punctate recent specimens. It is well 

 figured by Dawson in the Canadian Natarcdist and Geologist, Feb. 1859, p. 15, fig. 16. 



Lepralia ciliala Johnst. This form also occurred frequently with the preceding. The 

 cells are convex, the avicularia are present, projecting over the aperture. The surface is 

 punctate. 



Ccllcporaria surcularis Packard, Can. Nat. Dec. 18G3, p. 410. Occurred frequently on 

 Lamellibranch shells in large and thick masses at Caribou Island and Hopedale. 



Mgriozoum subgracilc D'Orbigny. (Ilillepora truncata Fabr., Faun. Grcenl.) Fragments of 

 the stems of this graceful species occurred abundantly at both localities. 



Hgpothgris psittacca King. Perfect valves were found at Caribou Island, and others were 

 given me which were reported to have been found three miles from the mouth of the Es- 

 quimaux River. Other shells, such as a Cardivm and Cardita borealis, also came from the 

 same place, showing that they had been washed out of a drift deposit on the river. This 

 species was abundant at Hopedale, where the valves adhered by their ligament. 



Pecten islandicus Linn. This was not common. Sevex-al ponderous valves, larger than I 

 have seen elsewhere had the ribs united into groups of two or three, separated by sulci of 

 equal width ; but in young and fragile subjects the ribs were equally distributed, and dif- 

 fered in no respect from the living young, or from those of the same age from the drift 

 clays of Maine and New Brunswick. 



Yoldia mgalis Stimps. A specimen of Yoldia arclica, received from Dr. Lutken, approaches 

 Y. mgalis more than Y. sapofilla. It is, however, longer, and the lunule is not so short and 

 deep as in Y. mgalis. One valve. Hopedale. 



Leda minuta Moll. {Area minuta Fabr., Faun. Grcenl.) Caribou Island, rare. Common at 

 Hopedale. 



Mndiolaria discrepans Moll One broken valve. Hopedale. 



Mgtilus edulis Linn. Fragments of large valves were abundant, but young shells were 

 uncommon. 



Cardium Hagesii Stimps. Proc. Acad. Nat. Sc. Philad. p. 581, 18G2. This species occurred 

 both at Hopedale and Caribou Island. 



Serripes gronlandicus (Chemn.) Beck. Caribou Island, frequent. Chateau Bay. 



Astarte BanJcsii Leach, Zobl. Beechy's Voyage (A. Warhami Hancock, Ann. Mag. Nat. Hist., 

 vol. xviii., 1846, p. 336, pi. v., figs. 15, 16. A. Richardsoni Reeve, Last of the Arctic Voyagers, 

 ii. App. A.fabula Reeve. 1. c. ; A. Laurentiana Lyell ; A. compressa Daws., — not of European 



MEMOIRS BOST. SOC. NAT. BIST. Vol I. Pt. 2. 59 



