412 LIST OF LABRADOR MARINE ANIMALS. 



passim annulis angustioribus — Cells immersed ; apertures round 

 •with a very narrow deep sidnus, those at the end of the truncate 

 branches have the figuram calcei equini of Fabricius' description- 

 The surface between the cells is deeply and irregularly punctured. 

 A transverse section of a branch shows about twelve oval cells 

 separated by thin walls, arranged around the solid axis of the 

 stem. 



This species approaches somewhat Busk's Eschara teres, Ann. 

 Nat.Hist., 1856, but it seems to have a more regular form ; the oval 

 cells shown in a transverse section are not so much produced towards 

 the central axis of the stem ; while it differs wholly from the teres 

 in the punctures dotting thickly the whole surface between the 

 cells, instead of there being a single row surrounding the aperture 

 as usual in the genus. Millepora truncata is a Mediterranean 

 species, and as represented by Lamoureux, is a much larger and 

 very different form from the two species above mentioned. On 

 ihe Bank in 50 feet ; with the preceding species. 

 Tunicata. 



Leptoclinum. A species of compound ascidian was abundant 

 in somewhat pellucid masses surrounding branches of nullipores 

 in 15 feet. 



Ascidia callosa Stm. Dr. Stimpson has identified this and the 

 species of Pelonaia. It is profusely abundant in the Bank in 50 feet 

 growing to a very large size, and affords shelter to various worms, 

 Sipunculi and Modiolarias, besides serving as a base of attachment 

 to Sertularia, &c. 



Cynthia pyriformis Ratke. Several were taken up alive on 

 beaches after storms. Fishermen haul them ashore in their nets. 



C &p. A specimen occurred on Ascidiacallosa. It is whitish) 

 smooth, low conical, base expanding. 



Pelonaia arenifera Stm. Several occurred in 15 feet sand. 



Boltenia oviformis Sav. A young specimen, that I refer to 

 this species was taken on the Bank. It is much more hirsute 

 than the two Maine species. - 



Brachiopoda. 



Hypoihyris psittacea King. Frequent on hard and sandy 

 bottoms in from 10-50 feet. 



Lamellibranchiata. 

 Anomia ephippum Linn. Abundant, though small. On nulli- 

 pores. 



A. acnleata Gm. In from 1 0-50 feet. 



