Vol. 54.] MISS J. DONALD ON ACLISINA, ETC. 71 



has about five and a half whorls preserved, its length =7 mm., its 

 width =4 mm. The York Museum possesses two individuals from 

 Settle ; that figured in PI. Y, fig. 12, has five whorls in a length of 

 8 mm. ; its width =4| mm. Another larger specimen, of which the 

 apex is broken, has seven and a half whorls ; its length =10 mm., 

 width = 5 mm. All from the Mountain Limestone {d% 



EXPLANATION OF PLATES III-V. 

 Plate III. 



Figs. 1-4. Aclisina pulchra, var. temcis, De Koninck. Fig. 1, front view, X8. 

 Swindridge. Coll. Thomson. Fig. 2. Back view, x 8. Robi'oyston. 

 Coll. Neilson. Fig. 2 a. Whorl of specimen with coarser and fewer 

 strige, Xl2. Oraigenglen. Own Coll. Figs. 3 a & 3 b. Yiews of 

 protoconch, X 30. Fig. 4. View of aperture showing reflection of lip 

 and lines of growth, X 16. Randerstone, Fife. Coll. Bennie. 



Fig. 5. Var. intermedia, side view with protoconch, X 16. Fig. 5 a. View of 

 protoconch, x 28. Law, Dairy. Coll. Bennie. 



Figs. 6-10. A. elongata, Fleming. Fig. 6, x5. Fig. 6 a. Portion of whorl of 

 another specimen, X 14. Peoton. Own Coll. Figs. 7 a, b & c. 

 Views of protoconch of var. cingiclata, X 34. Shell contorted. Craw- 

 field. Coll. John Smith. Fig. 8. View of aperture, showing reflection 

 of inner lip, x20. Law, Dairy. Own Coll. Fig. 9. Var. varians, 

 Xl6. UreColl. Fig. 10. Var. cm_9'M^rt!!a, front view, x 12. Fig. 10 a. 

 Portion of whorl enlarged. Glencart, Dairy. Coll. John Young. 



Fig. 11. A. -polygyra, M'Coy. View of type, X 12. Cullion, Draperstown. 

 Museu.m of Science & Art, Dublin. 



Figs. 12-15. A. costatula,J)ondX$i. Fig. 12. Front view, x9. Penton. Own 

 Coll. Fig. 13. Back view of specimen with protoconch, xl2. 

 Figs. 14 a, 6 & c. Protoconch, x27. Law, Dairy. Coll. Hunter- 

 Selkirk. Fig. 15. Var. dubia, back view, x6. Craigenglen. Coll. 

 Thomson. 



Fig. 16. A. similis, sp. nov. Front of portion of specimen, X 10. Law, Dairy. 

 Coll. Bennie. 



Plate IV. 



Fig. 1. Aclisina similis, sp. nov., X 6^. Law, Dairy. Coll. Bennie. 



Figs. 2 & 3. A. attenuata, sp. nov. Fig. 2. Back view, X 12. Glencart. Dairy. 

 Own Coll. Fig. 3. View of aperture, X 23. Glencart. Coll. Hunter- 

 Selkirk. 

 4-6. A. aciculata, sp. nov. Fig. 4. Back view, x6. Fig. 4- a. Single 

 whorl of another specimen, X 12. Gillfoot, Carluke. Coll. John Young. 

 Fig. 5. Front view of specimen showing lines of growth, xl2. 

 Craigenglen. Own Coll. Figs. 6 a, J & c. Views of the protoconch 

 of a small specimen doubtfully referred to this species, x30. Law, 

 Dairy. Coll. Hunter-Selkirk. 

 7-9. A. grantonensis, sp. nov. Fig. 7. Front view, x 12. Geol. Surv. 

 Coll., Museum of Science & Art, Edinburgh. Fig. 7 a. Portion of 

 whorl of another specimen showing lines of growth, x30. Coll. 

 of Museum of Science & Art, Edinburgh. Fig. 8. View of aperture, 

 Xl6. Figs. 9 a &c. Views of protoconch, X 27. Fig. 9 5. Protoconch 

 of another specimen, X 27. Woodhall. Coll. Bennie. 



Fig. 10. A. tenuistriata, sp. nov. Back view, X 10, Penton. Own Coll. 



11. A. quadrata, sp. nov. Front view, X 10. Fig. 11 a. View of aperture, 

 X 16. Law, Dairy. Coll. Bennie. 



