6o Tlie American Geologist. July, isfl» 
Megalaspis limbata. The genus was originally described by M. B;ir- 
rande, and both P. F^ischer and H. Hyatt have written about it. An 
example had been found in the grey Vaginatum limestone by Angelin. 
The structure of the sifjhon is very intricate, its sides being thrown, 
into lobed folds that recall the septal plating of the Ammonites of later 
times. Eight plates of figures, showing in detail the peculiarities of the 
structure of the siphon, etc., accompany the memoir. G. F. m. 
/J. Oiii de dfre Graptolitskiffrarna jxl Khinekiillc 
This article by the above author, and from the same press, describes 
the shales of Kinnekulle and their graptolitic contents. Linnarsson did 
much work in this district. Dr. Holm found herein the Rastrites shales, 
Monograptus q sp., Rastrites i sp., Climacograptus i sp., Diplograptus 
4 sp. Prof. J. E. Marr has visited this place and written upon its fauna. 
G. F. M. 
MONTHLY AUTHORS' CATALOGUE 
OF American Geological Literature. 
Arranged Alphabetically.* 
Agassiz, Alexander. 
The islands and coral reefs of Fiji. (Bull. Mus. Ccmp. Zool. vol. 
XXXIII. pp. 167, pis. 120, May, 1899.) 
Bather, F. A. 
Wachsmuth and Springer's monograph on crinoids. (Geol. Mag. 
collected extracts, 1898-99.) 
Beecher, C. E. 
Othniel Charles Marsh (Am. Jour. Sci., 4th ser. vol. 7. pp. 403- 
428, June, 1899.) 
Brooks, A. H. (John E. Wolff and). 
The age of the Franklin white limestone of Sussex county, New- 
Jersey. (i8th An. Rep., U. S. Geol. Sur., part 2, pp. 425-457, pi. 83, 
1898.) 
Clarke, W. F. 
On Roscoelite. (Am. Jour. Sci. 4t}: ser. vol. 7. pp. 451-458, June, 
1899-) 
Curtis, G, C, and J. B. Woodworth. 
Nantucket a morainal island. (Jour. Geol., vol. 7, pp. 226-237, April 
May, 1899.) 
Dall, Wm. H. 
A table of North American Tertiary horizons correlated with one 
another and with those of western Europe, with annotations. (i8th 
Am. Rep., U. S. Geol. Sur., part 2, pp. 623-648, 1898.) 
*Tliis list includes titles of articles received vip to the 20th of the preceding 
month, including general geology, physiography, paleontology, petrology and 
mineralogy. 
