the Nomenclature of the Foraminifera. 261 



^a-Qi). Also in California (Meek and Gabb, 'Geol. Surv. Cali- 

 fornia, Pala3ont.' vol. i. 1864, p. 4, pi. ii. fig. 2), together with F. 

 gracilis (fig. 1, p. 4) and F. robusta (fig. iJ, p. 3). Abich found 

 his Fusulina sphoirica in the Caucasus : " Vergleich. Grund- 

 ziige Kaukas." &c., Mdm. phys.-math. Acad. St.-Pdtersb. vol. 

 vii. pi. iii. fig. 13. B. F. Shumard found a Permian Fusulina 

 {F. elongata) in New Mexico and Texas : Transact. Acad. 

 ISt. Louis, vol. i. no. 2, 1858, p. 297 ; see also Hayden's ' Re- 

 ports.' F. rohusta has also been found in the Upper Carbon- 

 iferous Limestone of the Southern Alps (Canal-Thai, Uggo- 

 witz). Prof. Suess regards it as the same as F. splicer ica^ 

 Abich, and notes its occurrence, with F. cylindrical in Russia*. 



There can be little doubt, with the evidence of gradational 

 forms given in the 'Mikrogeologie,' pi. xxxvii., that all these 

 and even other Fusulince may belong to one and the same 

 zoological species. It is highly probable also that, on strict 

 comparison, one and the same variety would be found to have 

 claim to two or more of the names quoted above and in the 

 foregoing list, made from the ^ Mikrogeologie.' 



In a specimen of white i^«s«7/»rt-limestone, brought from 

 Russia by the late Sir R. I. Murchison, we have found well- 

 characterized fragments of Dentalina communis and a conical 

 Valvulina. Such a form, recent, passes into Trochammina 

 squamata ; and Tr. injlata passes into Lituola ; and Lituola^ 

 through Trochammina^ becomes Tnvolutina and Endothyra f. 

 This low Rotaliiform shell {Endothyra) occurs in specimens 

 collected by Dr. Holl from some clay-seams of the English 

 Carboniferous Limestone, in sections of Carboniferous Lime- 

 stone made by Prof. Phillips, of oolitic Mountain-limestone 

 made by Mr. H. C. Sorby, and in several other collections. 

 As Valvidina passes gradually into Trochammina by traceable 

 links (Brady), and as the last and Involutina are closely related, 

 we are not surprised to find a variety of modifications, even 

 Textilariiform, of this low group in the Palajozoic strata, and, 

 on the other hand, Endothyran modifications higher up in the 

 series, as Ehrenberg's Jurassic " Borelis sjahceroidea " (ix. A. 

 1-3) above noticed (p. 257). 



Miscellaneous Fossil Foraminifera figured by Ehrenberg in the 

 ' Mik rogeo log ie . ' 



I. Barhadoes {late Tertiary). 



Planorbulina (young), and PI. ammonoides [Rss.]. 



* See Suess's valuable note on the distribution of Fusulina in America, 

 Europe, and Armenia, Proc. Geol. Inst. Vienna, Jan. 4, 1870; Quart. 

 Journ. Geol. Soc. vol. xxvi. Miscell. p. 3. 



t See above, p. 259 ; also II. B. Bradj-'s notes on these Foraminifera, 

 Ann. Nat. Hist. ser. 4, vol. vi. pp. 50-52. 



