.108 Mr. I\. B. Newton on Fossil Molhisca dc. 



This sjiccirnen is in a matrix ))aiticularly free from oily 

 impregnations, thus exhibiting its original drabhisli coloiir. 

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

 fig. 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 nndoubtedly possessing 

 Teleostean characters. 



The surface is mostly covered with a lustrous chitinor.s- 

 looking layer of browni-h coh)ur, besides being furnished 

 wMth a closely arranged set of delicate concentric striations ; 

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

 " lateral line.'' 



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

 measurements of 8 by 5 mm. might originally have beeix 

 slightly increased upon. 



(?) Tellinas^. (PI. VI. fig. 10.) 



Remarks. — This Pelecypod consists of a transversely oval 

 compressed valve, with an almost median umbo whfch 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. 



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



Uemarks. — A fragmentary specimen is provisionally deter- 

 mined under the above name. It a])pears to be chiefiy the 

 anterior portion of a transversely oblong valve with a sub- 

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

 border wliich may be more or less parallel with that of the 

 ventral region. The umbo appears to be vertical and very 

 little rai.^ed, not projecting beyond the dorsal margin, and is 

 situated about '10 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 

 geueial surface is I'urnished with obscure concentric striations. 



This fragment belongs to a shell of shallow and compressed 

 form, and is doubt luily placed with Lutravia^ although there 

 is no groove in tliat genus which would correspond with what 

 is seen in the ))resent specimen. Without further material, 

 however, a closer delormination is impossible. 



The height of tlie S|)ceimen i-< 2?> mm. 



