.108 Mr. R. B. Newton ow Fossil MoJhtsca tCr. 



This specimen is in a matrix particularly free from oily 

 impregnations, tlius exhibiting its original drabbish colour. 

 Embedded in the same material is a fish-scale (see PL VI. 

 lig. 16) which Dr. A. S. Woodward informs me is a scale of 

 the lateral line of a fish ; Mr. Boulenger, who has also 

 examined the specimen, regards it as undoubtedly possessing 

 Teleostean characters. 



Tlie surface is mostly covered with a lustrous chitinous- 

 looking layer of brownish colour, besides being furnished 

 with a closely arranged set of delicate concentric striations ; 

 in the centre is a single rib-like body answering to the 

 " lateral line.^^ 



The margins are not quite com])lete, so that the present 

 measurements of 8 by 5 mm. might originally have been 

 slightly increased upon. 



(?) TelUna sp. (Pi. VI. fig. 10.) 



Remarks. — This Polecypod consists of a transversely oval 

 compressed valve, with an almost median umbo which is 

 slightly elevated above the dorsal line. It is badly pre- 

 served, although the actual contour-lines are fairly well seen ; 

 some obscure ornamentation appears to be purely concentric 

 and representing growth-lines only. 



Dimensions. — Height = 20, length = 35 mm. 



(?) Lutraria sp. (PI. VI. fig. 11.) 



Bemarks. — A fragmentary specimen is provisionally deter- 

 mined under the above name. It appears to be chiefly the 

 anterior portion of a transversely oblong valve with a sub- 

 angulate end, a well-curved ventral margin, and a dorsal 

 border which may be more or less parallel Avith that of the 

 ventral region. The umbo appears to be vertical and very 

 little raised, not j)rojecting beyond the dorsal margin, and is 

 situated about 20 mm. distant from the anterior border. A 

 strikingly oblique groove runs from the right-hand side of 

 the umbo, but is not continuous to the ventral margin ; the 

 geneial surface is furnished with obscure concentric striations. 



This fragment belongs to a shell of shallow and compressed 

 torn), and is doubt tully placed with Lutraria, although there 

 is no groove in that genus which would correspond with what 

 is seen in the present specimen. Without further material, 

 however, a closer determination is impossible. 



The height of the specimen is 23 mm. 



