362 BihUographical Notice. 



described in 1853 by Rupert Jones with some doubt as Numrmdites 

 Uassicus. M. Terquem's determination of the arenaceous structure 

 and other special characters of this abundant little shell gave him 

 full reason to place it in a new genus. 



A form from the Middle Lias that he had previously referred to 

 Siderolina he found to be a Polyzoon, Neuropora. 



In some shales at Montigny-k's-^Ietz he found Orhulina, Frondi- 

 cnJaria, Dentcdimt, Marijinulina, Cristellaria, Eohidina, Rosalina, 

 and Invohitina — fifteen species, nine new, and some like those of 

 the beds above ; also a new genus, Annidina, which has the look of 

 being closely related to, if not the same as, the last mentioned. 



M. Piette and ^[. Terquem together found Foraminifers in all the 

 strata of the Lower Lias of the Departments of the Moselle and the 

 ^leurthe, of Luxemburg, Belgium, and the Ardennes. These amount 

 to twenty-three species, some of them new, and some like those of 

 the marnes a ovdides. Among these are Wehbime [and Flacopsdin(e\, 

 particularly abundant as parasites in a bed of Gnjphcpa arcuata. 



In his previous memoir on the Liassic Foraminifera, M. Terquem 

 had noticed a little fossil like the " Orhis infimus " of Strickland, 

 and had then referred it to Serpula ; but in his second memoir he 

 describes its Foraminiferal characters with exactness, and, showing 

 its relation to Involuthia, names it /. sUieea. Strickland's minute 

 fossil has also been referred to Parker and Jones's sandy genus 

 Trochammina ; and Terquem's /. silicra has been referred to T. 

 incerta, D'Orb. sp., by H. B. Brady (Geol. Mag. vol. i. p. 190), and 

 quite correctl)-, and without any great violence to M. Terquem's 

 arrangement; for without doubt Trochammina and Involvtina arc 

 very close allies, the latter, indeed, being merely a more advanced 

 development from the simple and naked coil of the former. 



In the two plates (pis. 5 & 6) illustrating M. Terquem's Second 

 Memoir we have his usual numerous, small, beautifully neat, and na- 

 tural figures, for which palaeontologists owe him many thanks. We 

 doubt the zoological value of all his " species ;" and we are sure that 

 many would fall under old names had the veteran author had the 

 opportunity of comparing all the published illustrations of Foramini- 

 fera. That is a labour, however, which some younger rhizopodist may 

 undertake, for the sake of a more strict collocation of the Liassic with 

 other forms, and the readier recognition of biological relationship by 

 the reading student. Thus in ])1. o we easily discern the known 

 species (or, rather, notable varieties) Xodoaaria humdis, mdicida, 

 oi'icida, Dentalina communis, &c., under new names. 



Fig. 4, Orbidina liasica (p. 432), is an interesting reticulated fonn. 

 Fig. 5, 0. pnnctata (]>. 432) can sea n-ely ditft-r from O. univirsa,iyO. 

 F'igs. 1, 2, and the woodcut at p. 431, and tig. 12 in pi. (5, present 

 remarkably attenuated La(/(-nir ; whilst fig. 3, a. b supjUy the j^assages 

 towards L.ijlobosa. Fig. t), Atinidina miteiisis, must be, as intinuited 

 above, a small Inrolutina liaaica. such as is figured by H. B. Brady in 

 pi. 9. tig. 3, (Jeol. Mag. vol. i. Figs. S, 14, & li>, termed Frond icidariir, 

 are rather LintjuIincB; and fig. 13, also '' FrondicuhiriaS' can scarcely 

 be said to have relinquished tlie Xodosarian type. In pi. some 



