362 Blhliographical Notice. 



described in 1853 by Rupert Jones with some doubt as Nummxilites 

 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-les-Metz he found OrbuUna, Frondi- 

 cularia, Dentalina, Maryinidina, Cristellaria, Rohidina, Roscdina, 

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

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

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



M. Piette and M. Terquem together found Foi'aminifers in all the 

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

 Meurthe, of Luxemburg, Belgium, and the Ardennes. These amount 

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

 the marnes a ovo'ides. Among tliese are Webbinfp [and Flacopsilina'], 

 particularly abundant as parasites in a bed of Gryphcea uvcuatu. 



In his previous memoir on the Liassic Poramiuifera, !M. Terquem 

 had noticed a little fossil like the " Orbix hifimus " of Strickland, 

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

 describes its Foraminiferal characters witli exactness, and, showing 

 its relation to lavolutina, names it /. sdlcea. Strickland's minute 

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

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

 incerta, D'Orb. sp., by H. B. Brady (Geol. Mag. vol. i. p. 196), and 

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

 arrangement ; for without doubt Trochammina and Invohitina are 

 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 niimerous, small, beautifully neat, and na- 

 tural figures, for wliich 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 recogidtion of biological relationship by 

 the reading student. Thus in pi. 5 we easily discern the known 

 species (or, rather, notable varieties) Nodosaria humilis, radicula, 

 ovicida, Dentalina communis, &c., under new names. 



Fig. 4, OrbuUna liasica (p. 432), is an interesting reticulated form. 

 Fig. 5, 0. punctata (p. 432) can scarcely differ from 0. 'universa,WO. 

 Figs. 1, 2, and the woodcut at p. 431, and fig. 12 in pi. 0, present 

 remarkably attenuated La(/ence ; whilst fig. 3, a, b supply the passages 

 towards L. globosa. Fig. (J, Annidina metensis, must bo, as intinuited 

 above, a small Involutina liasica, such as is figured by H. B. Brady in 

 pi. 9. fig. 3, Gcol. Mag. vol. i. Figs. 8, 14, & 19, termed Frond icidarice, 

 are ratlier TAnyuUme; and fig. 13, also " Frondicidaria" can scarcely 

 be said to have relinquished the Nodosarian type. In pi. G some 



