64 AMERICAN JOURNAL 



Waldheimia floridana, Pourtales (p. 112). (Bull. Mus. C. 

 Zool. iii, pi. 1, fig. 3, and pi. 2, fig. 1-3.) This species, after 

 comparison with a series of forms of W. septigera, kindly for- 

 warded by Mr. J. Gw r yn Jeffreys for comparison, appears to be 

 very distinct, an opinion in which Mr. Davidson concurs. Tere- 

 bratula septata, to which this species has been referred, is a fossil 

 Terebratella. 



?GWYNIA, King. 



I am indebted to the extreme courtesy of Mr. J. Gwyn Jef- 

 freys, F.R.S., for specimens of Givynia eapsula, Jeffreys, and 

 the opportunity of examining his series of the very young of 

 Oistella lunifera, W. cranium and T. caput- serpentis. 



These all exhibit, more or less, the characters used as generic 

 in the description of Agulhasia by Prof. King. Those in which 

 the apex is perfect, preserve the kidney-shaped nucleus described 

 by me in the young of T. cubensis, and observed by Prof. 

 Morse in T. septentrionalis. 



Mr. Jeffreys informs me that W. cranium has never been found 

 associated with his T. eapsula, though the other species men- 

 tioned are found with it. I notice that W. cranium is common 

 in the Scandinavian seas, and T. eapsula has been found by Sars 

 at Christiania. The young of T. cranium resemble T. eapsula 

 very much; the specimens of the former are usually a little 

 longer, and the valves more unequal. All things point toward 

 the probability of T. eapsula being an immature form, but of 

 what species I am unwilling to express a decided opinion. It is 

 certainly not a Oistella or "Arqiope," and, if it eventually prove 

 adult and distinct, the genus (xivynia must stand. 



MAGASINiE. 

 TEREBRATELLA. 



Page 116. T. transversa, Sowerby, should be removed from 

 the synonymy of T. dorsata. 



Page 117. To the synonymy of T. pulvinata, Gld., should be 

 added T. pulvilla, Gld., Cpr. Rep. Br. Assoc. 1856, p. 213 

 (name only). 



Page 119. Having had an opportunity of examining Sower- 

 by's Thesaurus Conchyliorum since my first paper was written, 

 and having carefully compared the figures and remarks of differ- 

 ent authors, I am convinced that T. caurina, Gould, and T. 

 transversa, Sowerby, are one and the same thing. The latter 

 name has four years' priority. To the synonymy should be 

 added T. canrena, Cpr., Rep. Br. Assoc. 1856, p. 298 (name 

 only). 



