35i 



Among the specimens that were referred to Ammonites Nervherryanus 

 in the second part of this volume, two of the ten from North West Bay, 

 V. I., that were collected by Mr. Richardson in 1873, are said (on page 

 110) to "differ from the rest in some rather important particulars." One 

 of these specimens, the original of the figure on Plate 50, measures about 

 seven inches and a half in its maximum diameter. It is almost perfect 

 and fairly well preserved on one side, but badly water worn on the other. 

 The other specimen is a large water worn fragment with the finer details 

 of most of its surface ornamentation completely obliterated. The more 

 perfect of these two specimens, at any rate, seems to difier from P. Neiv- 

 herryanus, not only in its more inflated volutions, but more particularly 

 in its higher ribs, with much broader grooves between them. Dr. Kossmat, 

 who has seen a good photograph of this specimen, thinks that it belongs 

 to a species allied to P. Neivherryanus, from which it differs in "its 

 smaller degree of involution (only one half) and the less numerous and 

 more prominent ribs." Judging from the photograph, he adds, "it seems 

 to me that the constrictions are more strongly bent forward than the ribs 

 behind them, so that they have the tendency to cut off one of the ribs. 

 This character is not observed in P. Neivberryanus^ Quite recently, in 

 October, 1901, an imperfect hut characteristic specimen of this species, 

 about five inches in its greatest diameter, was collected two miles and a 

 half up the Nanaimo River, V.I., by Mr. Harvey. 



Desmoceras Selwynianum, Whiteaves. 



Ammonites Selwynianus, Whiteaves. 1879. This volume, pt. 2, p. 104, pi. 13, figs. 1, and ia. 

 Desmoceras Selwt/niammi, Kossmat. 1897. Beitr. znr Palseont. Oesterreich-Ungarns 

 und des Orients, vol. xi, p. 148. 



Sucia Islands, Dr. C. F. Newcombe, 1894 : two specimens. West side 

 of Denman Island, half a mile south of Village Point, W^. Harvey, 1896 : 

 two small specimens,, the largest not quite forty-nine millimetres, or nearly 

 two inches in it greatest diameter. 



One of the original types of Amm.onites Sehcynianus, from the Sucia 

 Islands, has been kindly compared by Dr. Kossmat with Indian speci- 

 mens of A. diphylloides, Forbes, of which it was thought possible that it 

 might be a variety. In regard to this specimen. Dr. Kossmat wrote as 

 follows : — "A. Selwynianus is a near ally of the S. Indian A. diphylloides, 

 which is clearly a Desmoceras, as shown by its septa. Allied species of 

 Desmoceras occur in Europe also, for example D. pyrenaicum, Grossouvre 

 (Ammonites de la Craie Superieure, Paris, 1893, pi. xxxvii, fig. 9), in the 

 Senonien of France. The septa can only partially be seen on the speci- 

 men sent by you, but they are certainly very similar to those of D. di- 

 phylloides. An important difference between the two species is the very 



