366 DR MURRAY ON THE DEEP AND SHALLOW-WATER MARINE FAUNA 



*Peurotoma (Surcula) lepta, Watson. 



,, ( ,, ) staminea, Watson. 

 *Trochus {Margarita) brychms, Watson. 



,, ( ,, ) infundibulum, Watson. 



Cephalopoda : 



* Bathyteuthis abyssicola, 1 Hoyle. 

 Cirroteuthis magna, Hoyle. 

 Eledone rotunda, Hoyle. 



Polyzoa : 



*Bicellaria infundibulata, Busk. 

 *Bugula 2 bicornis, Busk. 



,, reticulata, Busk. 



*Cellepora 3 solida, Busk. 



Farciminaria* magna, Busk. 

 *Foveolaria orbicularis, Busk. 



Idmonea marionensis, Busk. 



Onchopora sinclairii, Busk. 



Salicornaria magnifica, Busk. 



Brachiopoda : 



Terebratula wyvilliif Davidson. 



1 Notwithstanding the great distance between the localities where this species [Bathyteuthis abyssicola] and 

 Verrill's BentheoteiUhis 'megalops [North Atlantic] were captured, it seems quite possible that they may ultimately 

 prove to be the same species (Hoyle, Zool. Chall. Exp., part 44, p. 169). 



2 In order to include several of the species in the present collection, and to avoid the creation of one or more new 

 genera, I have thought it better in this catalogue so to modify the definition of Buaula as to admit of these, for the 

 most part, new forms being placed in it. . . . The group, however, as thus made up, includes several apparently 

 distinct types, which will probably at some time be thought of at least sub-generic value. ... It may also be 

 observed that the first and second of these groups consist almost exclusively of very deep-water forms, the shallowest 

 being 150 fathoms, whilst the depths from which the other species, included in those groups, were brought up was on 

 the average not less than 2000 fathoms. They would appear therefore to constitute a distinctively abyssal type. . . . 

 The group affords a striking instance of the comparatively large size and free growth, and at the same time of the 

 extremely delicate structure, characteristic it may almost be said of the Polyzoa that live in the tranquil depths of the 

 ocean. — (Busk, Zool. Chall. Exp., part 30, pp. 37, 38.) 



3 The species of this multiform and perplexing genus [Cellejwra] may be conveniently arranged in two principal 

 more or less artificial sections or groups, characterised primarily by the form of the operculum and secondarily by the 

 general zoarial habit. . . . On the whole the genus would appear to belong to comparatively shallow water. — (Bosk, 

 Zool. Chall. Exp., part 30, pp. 191-2.) 



4 The genus Farciminaria may be regarded emphatically as abyssal ; the mean depth at which the species here 

 enumerated occurred being not less than 1500 to 1600 fathoms, or from 450 to 2750 fathoms. — (Bosk, Zool. Chall. Exp., 

 part 30, p. 49.) 



5 Terebratula wyvillii is one of the most interesting species of deep-sea Brachiopoda dredged during the Challenger 

 Expedition. It appears to abound over a wide geographical range, and at depths varying from 1035 to 2900 fathoms. 

 The shell is of such extreme thinness that it is almost transparent ; indeed, the valves when separated are really so, 

 and the muscular impressions may be seen through its transparency. It is also exceedingly brittle. It bears much 

 resemblance to several species occurring in the Jurassic and Cretaceous formations and especially so to Terebratula 

 boruiti, Zeuschner, from the Kimmeridge of Switzerland, and from which some of the Challenger specimens are 

 scarcely distinguishable, either by size or shape. — (Davidson, Zool. Chall. Exp., part 1, pp. 27, 28.) 



