20T 



by about twenty oblique but neai-ly straight, narrow and widely dis- 

 tant, simple raised ribs, which are more or less acute and which 

 become obsolete upon the periphery. As measured in the centre of 

 one of the sides of the last whorl, these ribs are one inch and a-half 

 apart at the commencement of the volution and two inches and a-halt 

 apart at the aperture. A small fragment of tlu> test which remains on 

 the peripher}" sliows that the outer surface of the shell is marked by 

 extremely obscure and rather hue ribs, which average about one line 

 in breadth near the aperture. 



According to Stoliczka,* ''Ammonites Beudanti is, in Europe, charac- 

 teristic of the Gault, especially of its middle strata ; it is known from 

 many localities in Fi-ance, Switzerland, Germany, England and Eussia ; 

 and also from the province of Constantine in Algeria." In Southern 

 India it occurs of great size at Odium, Mooraviatoor and Pondicherrv, 

 and, as has been already stated, it is by far the most abundant of all 

 the Ammonites collected by Dr. CI. M. Dawson at the Queen Charlotte 

 Islands. 



Haploceras plandlatum, Sowerby. (Sp.) 

 Plate 28, fig. 1. 



Ammonites planulatus, Sowerby. 



Ammonites Mayorianus. d'Orbigny. 



" Gaiidamu, Forbes. 



Ammonites Mai/orianus, Pictet & Roux. 



" Griffitliii, Sharpe. 



" plamdattis, Sharpe. 

 " 3Ia>jorianus, Pictet. 



" planulatus, Stoliczka. 



—1827. ]\Iine.ral Conchology, Yol. 

 VI., p. 136, pi. 570, fig. 5."^ {Not A. 

 planulatus, Schlotheim.) 



—1884. Paleontologie Fran^iaise, Ter- 

 rains Cretaces, Vol. I., p. 2H7, 

 pi. 79. 



— 1846. Transactions of the Geo- 

 logical Society of London. \o\. 

 VII., p. 113, pi. 10, fig. 3. 



— 1848. Fossiles des Gres Verts, p. 

 37, pi. 2, fig. 5. 



— 1854. Fossil CeplialoiKxla of the 

 Chalk, p. 28, pi. 11, fig. 3. 



—1854. Idem., p. 29, pi. 12, figs. 3-4. 



— 1860. Paleontologie Suisse, Fos- 

 siles de Ste. Croix, p. 283 



— 1865. Pakeontologia Indica. Creta- 

 ceous Cephalopoda of Southern 

 India, Vol. I. p. 134, pis. 67 and 68 



North shore of Cumshewa Inlet: one small specimen about three 

 inches and a-quarter in diameter, and two large ones, one ten inches 

 and the other fully eleven inches in their greatest diameter. 



* Palaeont Indica. Cret. Ceph. of S. India, p. 143. 

 March 25th, 1884. 



