504 



PROFESSOR GREGORY OX 



C. Hodgsonii is not of the same species as C. eximius. And with regard to the 

 large C. Hodgsonii of the Synopsis, not having seen it, I am unable to decide. 

 But if it be, as the figure indicates, as strongly marked as the small one, it cannot 

 be C. eximius. If, on the other hand, it should prove to be like C. eximius, then 

 it is probable that it will be found to differ specifically from C. Hogdsonii. 



55. Campylodiscuslimbatus^reb. PI. XL, fig. 55. Form orbicular. Diameter 

 from O005" to O008". Canaliculi marginal, short, broad, transversely sulcate, so 

 as to appear, on close inspection, almost moniliform. Within this marginal band 

 is another fainter band (the outer one being strong and black), which looks almost 

 like the reflection in a mirror of the first, except that the bars in it are more de- 

 cidedly moniliform, or formed of more distinct granules, which, near the median line, 

 extend from both ends towards the centre, in a broad band, which becomes gra- 

 dually narrower and fainter as it proceeds, and is lost on both sides before reach- 

 ing the centre. In De Brebisson's figure these projecting bands reach the centre, 

 but I have not been able to trace them so far, and have only done so with diffi- 

 culty, so far as I have traced them. 



This very fine and striking form is not unfrequent in two of the Loch Fine 

 dredgings. About four years ago, I observed a fragment of a large Campy- 

 lodiscus in a marine gathering from Oban, which was not known to Professor 

 Smith ; but I did not describe it, having waited for an entire specimen, which I 

 did not meet with till this last October, when it proved to have been a fragment 

 of C. limbatus, which De Brebisson had shortly before figured as occurring at 

 Cherbourg. 



GROUP V. 

 Amphiprora. 



Of the genus Amphiprora, the new species in these dredgings, though not 

 very numerous, are very interesting. One form is very doubtfully referred to 

 this genus. 



56. Amphiprora pusilla, n. sp. 



57. ... plicata, n. sp. 



58. ... elegans, Sm. 



59. ... lepidoptera, n. sp., G. 



60. Amphiprora obtusa, n. sp. 



61. ... maxima, n. sp., G. 



62. ... (?) complexa, n. sp., G. 



56. Amphiprora pusilla, n. sp. PI. XII., figs. 56 and 56 b. Form of the F.V. 

 nearly rectangular, a little incurved in the middle, and expanded at the extremities. 

 Above each valve lies a plate, in shape like a narrow arc of a very large circle, the 

 convex edge outwards, the middle of it slightly overlapping the central constric- 

 tion, while the ends coincide with the inner terminal angles of the valve. Length 

 about 0-0027" ; breadth, including plates, at the middle, 0*0008". S.V. lanceolate, 



