214 REPORT OF COMMISSIONER OF FISH AND FISHERIES. [508] 



Many other species were also common, or even abundant, in the various 

 localities, and quite a number proved to be undescribed, and therefore 

 their descriptions will be found in the systematic catalogue accompany- 

 ing this report. Among these were Lycidice Americana, Ninoe nigripw, 

 Anthostoma, sp., Acutum, Ammotrypane fimbriata, Travisia carnea, 

 Eone gracilis, Brada setosa, Nicomaclie dispar, Rhodine attenuata, a 

 species of Ammochares, Ampharete gracilis, Euchone elegans, and a 

 species of Nematoncreis. 



Several species of Nemerteans also occur on these bottoms. The largest 

 and most interesting is a large species of Meckella, (M. lurida, V.) This 

 grows to the length of 8 or 10 inches, and .25 broad ; its color is deep 

 chocolate- brown, with paler margins. It generally breaks up into numerous 

 fragments when caught. Another species, belonging, perhaps, to the 

 genus Cerebratulus, but not sufficiently studied while living, was 2 or 3 

 inches long in extension, and .05 to .08 of an inch broad. Its color was 

 dark olive-green, darkest anteriorly, the head with a white margin. 

 The lateral fossae of the head were long and deep ; the eyes incon 

 spicuous, perhaps wanting; proboscis emitted from a terminal pore ; the 

 ventral orifice, or mouth, placed well forward. Both this and the pre- 

 ceding were found at the 29-fathom locality, in sandy mud, but the 

 former also occurred in soft mud, in 19 fathoms. 



One of the most abundant Gastropods is Neptunea pygmwa, (Plate 

 XXI, fig. 115,) which is a rather northern shell, very common in the 

 Bay of Fundy. The specimens from this region are, however, quite as 

 large as any that I have seen from farther north. The small disk-shaped 

 egg-capsules of this shell were found in great abundance early in Sep- 

 tember attached to various bivalve shells, as well as to the shells of the 

 Neptunea itself. 



Buccinum undatum, (Plate XXI, Fig. 121;) Bela liarpularia, (Plate 

 XXI, fig. WS ;) Lunatia immaculata, (Plate XXIII, fig. 131;) Margarita 

 obscura, (Plate XXIV, fig. 156;) Astyris rosacea ; and Cylichna alba, 

 (Plate XXV, fig. 163,) are all northern shells, which were met with in 

 small numbers on the muddy bottoms. 



The Lamellibranchs were quite abundant. One of the most con- 

 spicuous is the northern Cyprina Islandica, (Plate XXVIII, fig. 201,) 

 which was quite common at several localities, especially in soft mud. 

 Many of the shells from the deeper dredgings in this region are north- 

 Fig. 3. ern and even arctic species, several of which have been 

 supposed not to occur south of Cape Cod. Among 

 these northern forms are Macoma proxima, of which 

 we dredged a few small specimens ; Cyclocardia borealis 

 and C. Novanglice (p. 418,) both of which were common ; 

 Astarte undata, (Plate XXIX, fig. 203,) which was 

 dredged in considerable abundance at several localities. 

 A large proportion of the shells of this species, 

 obtained here, were quite different in appearance from the varieties 

 that occur in such abundance in the Bay of Fundy. The latter, 





