1898] NOTES AND COMMENTS 227 
tion of the contents of the sands, so laboriously studied by Soldani, 
and rendered classic by the figures of Plancus, Gualtieri, Breyne and 
Ginanni. Silvestri also figures a new form of Peneroplis pertusus in 
Memorie Pont. Accademie Nuovi Lincei, vol. xiv.; but these one is 
tempted to regard more as worn specimens than novelties. They 
are however well figured on two plates, and form a useful contribu- 
tion to the subject in any case. Carlo Fornasini is still busy, and 
gives us a beautiful plate of Uvigerina bononiensis in Rivista Italiana 
di. Palaeontologia, anno iv., one specimen of which shows a double 
mouth. He also publishes another contribution to the Tertiary 
Foraminifera of Italy, dealing this time with the Pliocene of San 
Pietro, in Lama, near Lecco. His third paper, now before us, 
is “ Indice de le Rotaliine fossili d'Italia,” published by the Bologna 
Academy in its Memoires, and which is especially valuable in that 
Fornasini gives facsimiles of dOrbigny’s original drawings of his 
described species, which have never been published before. 
Yet another paper is one by Jan Perner of the Prague Museum 
who describes and figures in the Bulletin international, Academie des 
Sciences de Bohéme, 1898, some very interesting Lituoloids from the 
‘Tithonian of Stramberg. Five forms are described, of which three 
are considered new, and two are insufficiently known to be speci- 
fically determined. Mr Charles Schlumberger occupies our atten- 
tion with two papers, one, in La Feuille des Jeunes Naturalistes, 
on Jnvolutina conica, n. sp., an interesting form from the great 
oolite of Héronvillette near Caen. The specimens were obtained 
by heating the rock and then plunging it into cold water. His 
second paper is on a new genus, which he -calls Meandropsina 
Mun.-Chalm., though we believe that this is the first appearance of 
the name in print. The genus resembles Orbiculina, is formed 
of three thicknesses of cells, the centre of which is composed of 
spiral chambers, starting from an initial sphere, and becoming 
concentric and circular: this is covered above and below by a layer 
of vermiform and meandriform chambers. The layer is imperforate, 
but the last chamber has numerous openings all round the dise. It 
is of Cretaceous age. Friedrich Dreyer contributes a magnificent 
monograph on Peneroplis, of 119 pages and four double quarto and 
one single quarto plates. This is a separately published work issued 
by Engelmann of Leipzig at 12 marks, and the numerous figures 
show plainly the immense variation among the foraminifera. 
THE PERIODICAL CICADA 
THE latest entomological Bulletin (No. 14, n.s.) of the U.S. Depart- 
ment of Agriculture comprises an exhaustive account by Mr C. L. 
Marlatt of Cicada septendecim, the American Periodical Cicad. The 
bibliography of this famous insect goes back to the year 1633, when 
