330 Pachychormid Fish from South Ferriby, Lines. 



ornamented by closely-arranged fine longitudinal ridges and 

 rows of small bordered pittings. The new specimen (fig. i) 

 which must be placed a little further forwards than this basal 

 piece, still exhibits the median longitudinal groove, but with 

 less prominent edges and gradually becoming much less con- 

 spicuous ; while the lateral sloping surfaces are again orna- 

 mented with closely-arranged fine longitudinal ridges, which 

 are more or less irregular, often bifurcating, often intercalated, 

 and usually bearing low tubercles. The rows of bordered 

 pits on ihe basal piece evidently represent these tuberculated 

 ridges of the middle part of the snout. In the terminal piece 

 of the type specimen, the longitudinal median groove is only 

 slightly marked, and the longitudinal ridges, which in this 

 region are often reticulated or sub-divided into tubercles, 

 extend over it. The sharply-rounded lateral edges in the 

 proximal half of the snout are also marked with longitudinal 

 ridges, which are rounded and smooth, at first inclined down- 

 wards and forwards and then, as shown by the new specimen 

 (fig. 2) directed upwards again. The lateral edges in the 

 distal half are smooth, but impressed with a few irregular 

 shallow wrinkles. The lower surface of the new specimen 

 (fig. 3), like that of the terminal piece of the type, is smooth, 

 except quite at its proximal end where a few very small 

 tubercles are irregularly scattered. It is also marked by the 

 faint broad median longitudinal groove, and by a pair of lateral 

 longitudinal lines. 



From the same horizon and locality as the new specimen 

 now described, Mr. Henry C. Drake, F.G.S., has also obtained 

 a species of Pachyrhizodus* and other fish-remains of much 

 interest ; while in a higher horizon he has discovered character- 

 istic portions of Elopopsis crassus.^ 



EXPLANATION OF PLATE XIX. 



Protosphyrcena stebbingi A. S. Woodw. ; portion of rostrum, nat. size, 

 seen from above (i), the right side (2), and below (3), with two transverse 

 sections in outline (a, b). — Lower Chalk (zone of Holaster subglobosus). South 

 F"erriby, Lincolnshire. In Hull Museum. 



We notice from the Publishers' Circular that Messrs. Longman are 

 shortly to publish ' the only authorised edition of the address ' of the 

 president of the British Association, delivered at Dundee. From this it 

 would appear that the copies of the address published and sold by the 

 Association at Dundee, and the copy appearing in the Association's Annual 

 Report, are not authorised ! 



* A. S. Woodward, op. cit. (Mon. Pal. Soc, 191 2), p. 249, pi. liv. , fig-. 2. 

 t A. S. Woodward, The Naturalist, 1907, p. 306. 



Naturalist, 



