OF CONCHOLOGY. 61 



TEREBRATULID.E. 



Terebratula cubensis, Pourtales, p. 105. (Bull. Mus. Comp. 

 Zool. iii, pi. 1, fig. 2, 8—16, May, 1871.) 



This species is unquestionably quite distinct from T. vitrea, to 

 which it has been referred by some eminent European natu- 

 ralists. 



Among other points developed in numerous dissections of this 

 species, were the apparent absence of the anterior prolongations 

 of the ".great pallia! sinuses" in the anterior parts of the mantle 

 lobes. The genitalia are very posterior and form a reticulated 

 net work on each side of the muscular attachments, but do not 

 pass before them. 



In front of the occlusor muscles the tissues of the parieties 

 appear to be thickened, or cellular tissue is interposed between 

 the laminae, forming a singular projecting mass which I have 

 called the nasiform body, from its resemblance in shape to 

 the human nose. Below the lower border, and more prominent 

 portion of this body, is a groove, the inter-corporeal groove, and 

 below this again, is a transverse mass, in structure similar to 

 the first mentioned, shaped like a roll of parchment, which I 

 have named the supra- oesophageal body. A small space exists 

 between this and the posterior junction of the brachia behind the 

 mouth. Spiculoe, like minute thorny brambles, were abundant 

 in the tissues. The very young of this species have a kidney- 

 shaped nucleus to the valves, of different texture from the re- 

 mainder of the shell. The brachia are arranged in a single line 

 around the edge of a semilunar membrane. There are no setae 

 at this stage, and the stomach is bag-shaped. This fry had the 

 shell and hinge-teeth fully formed and of normal shape, but was 

 without apophyses. It was *02 of an inch in length. 



TEREBRATULINA. 



Page 105. T. marginata and T.quadrata of Risso are to be added 

 to the synonyms of Terebratulina caput-serpentis on Mr. David- 

 son's authority. The following additional localities are given for 

 the species : Scandinavia, Sars; Sicily, Sequenza ; Dalmatia, Bru- 

 sina ; Australia, J. W. Flower (?) ; Jamaica, Barrett ; probably 

 T. Cailleti, jun. 



Terebratulina Cailleti, Crosse, off Chorrera, Cuba, in 270 fa- 

 thoms ; near Cosima in 450 fathoms ; at Double-headed Shot 

 Key, Tortugas, in 471 fathoms, and near Tennessee reef in 115 

 fathoms, United States Coast Survey Expedition, in charge 

 of M. de Pourtales. The specific name should be corrected to 

 read as above. Crosse's figure is very poor, and represents an 



