468 MR. H. BOLTON ON A MARINE FAUNA IN THE [NOV. 1907, 



ACROLEPIS (?). 



A few scales, 2 to 3 millimetres in diameter, thickly coated with 

 ganoine and ornamented with a few raised striae which run one into 

 the other. Beyond their general resemblance to the Acrolepis-tsye, 

 nothing more can be determined. 



Coprolites. — Several irregular monilated masses, varying in 

 length from 14 to 9 millimetres and having a diameter of 9 to 5 mm., 

 occur in the shale. All are heavily charged with iron-pyrites, and 

 there seems to be no doubt that they are coprolites. 



Palaeoniscid clavicle {ElonicWiys ?). — One small slab of 

 shale shows the greater portion of a stout strongly-curved clavicle, 

 with a raised ornament of irregular striae which fuse with one 

 another. 



EXPLANATION OF PLATE XXX. 



Figs. 1 & 2. Chonetes sp. Showing hinge-spines, short ears, and silicate 

 medial area, x 2. (See p. 458.) 



Fig. 3. Chonetes sp., var. Showing closer ribs and development of ears, x 2. 

 (See p. 458.) 

 4. Chonetes cf. hardrensis, Phillips. Showing numerous small bifurcate 

 ribs and the basal portions of ten hinge-spines. X 2. (See p. 457.) 



Figs. 5a & 5 5. Productzcs concinnus, Sow., mut. : ba = exterior of pedicle- 

 valve ; 5 ft == interior of brachial valve. X f . (See p. 459.) 



6 a & 6 ft. Ambocelia aff. Urii. Pedicle and brachial valves. X 2. 



(See p. 459.) 



7 «-7 e. Nucula csqualis (Sow.) : 7 a = left valve ; 7 b — conjoint valves 



seen from above; 1c, d = internal casts, showing muscle-scars and 

 pallial line ; 7 e — interior of left valve showing hinge-teeth. X 2. 

 (See pp. 459-60.) 

 8a & 8ft. Tellinomorpha (?) Hindu, sp. nov. : 8a = right valve, showing- 

 external characters ; 8 ft = greater portion of left valve, showing 

 oblique ridge and hinder border. X 2. (See p. 460.) 

 Fig. 9. Schizodus antiquus, Hind. Attached valves, x 2. (See p. 461.) 



10. Palceolima ret if era, Hind MS. Internal cast, showing angulated ribs 



springing from the margin of the valve and dying out before 

 reaching the umbo. X 2. (See p. 462.) 



11. Modiola, so. nov. A regular tumid form with faint lines of growth. 



X 3. (See p. 462.) 



12. Parattelodon tenuistriatum (Meek). Internal cast, showing impressions 



of characteristic radiate ribs along the hinder border. x 2. 

 (See p. 460.) 



13. Baphistoma (!) acuta, sp. nov. Example showing the low acute spire, 



nodulated shoulder, and concave outer border. X f. (See p. 462.) 

 Figs. 14 a & 14 ft. Pletirotomaria gemmulifera, Phillips. A" good example, 

 showing the longitudinal rows of tubercles and the flattened spire. 

 X 3. (See p. 463.) 

 Fig. 15. Macrocheilus cf. ventricosus, de Koninck. X f . (See p. 463.) 



16. Loxonema cf. scalaroideum, Phillips. Portion of three whorls, showing 

 ornament. X 8. (See p. 464.) 

 Figs. 17a-17c Loxonema ashtonense, sp. nov. 17 a = shell of six whorls, 

 showing the doubling in size of succeeding chambers and the shell- 

 ornament ; 17 ft = shell showing mouth-aperture ; 17 c = magni- 

 fied view of shell-ornament. X 6. (See p. 464.) 

 18 a & 18 ft. Naticojosis disjuncta, sp. nov. Example showing the somewhat 

 discontinuous last whorl. X 4. (See p. 464.) 



