234 THE GENTTS MTTRCHISONIA AND ITS ALLIES. [May 1 895, 



EXPLANATION OF PLATES VIII.-X. 



Plate VIII. 



Figs. 1, 2. Murehisonia cincta, sp. nov. Fig. 1, front view. X 9. Glencart, 

 Dairy. Collection of Dr. John Young. Fig. 2, back Tiew. x 8. 

 Fig. 2 a, apex, enlarged. Law, Dairy. Collection of Mr. John Smith. 



Figs. 3-8. M. dispar, M'Coy. Fig. 3, back view, nat. size. Fig. 8, another 

 specimen, nat. size, both obliquely deformed. Cork. Collection of 

 Mr. J. Wright. Fig. 4, back view, nat. size. Fig. 4 a, portion of 

 another specimen, enlarged to show form of band. Fig. 6, mouth of 

 small specimen, nat. size. Avon Section. Bristol Museum. Fig. 5, 

 type, X 3. Fig, 5 a, portion of whorl, enlarged to show contour. 

 Lowick. Woodwardian Museum. Fig. 7, wax impression, X 2. 

 Osgathorpe. Oxford Museum. 



Figs. 9, 11, 12. M. fusiformis, Phill. Fig. 9, type, X 3. Bolland. Gilbert- 

 son Collection, British Museum (Natural History). Fig. 11, front 

 view, X 2. Settle. York Museum. Fig. 12, back view, x 2. 

 Settle. Woodwardian Museum. 



Figs. 10, 13. M. Youngiana, sp. nov. Fig. 10, front view, X 6. Collection of 

 Dr. J.Young. Law, Dairy. Fig. 13, X 5. Fig. 13 a, apex, greatly 

 enlarged. Collection of Mr. Smith. 



Plate IX. 



Fig. 1. M. Tkomsoni, sp. nov., X 5. Craigenglen. Collection of Mr. 

 Thomson. 



Fig. 2. M. Marri, sp. nov., X 2, wax impression. Shap. Woodwardian 

 Museum. 



Fig. 3. M. clalryensis, sp. nov., X 6. Dairy. Collection of Mr. Thomson. 



Fig. 4. M. (Hypergonia) fastigiata, sp. nov., front view, X 3. Clattering Ford, 

 Cumberland. Museum of Practical Geology. 



Fig. 5. M. (H.) M'Coyi, sp. nov., X 6. Fig. 5 a, body-whorl of another speci- 

 men, X 8. Wax impressions. Widdle Fell. My own collection. 



Figs. 6, 7, U. M. (Stegocaelia) variabilis, sp.nov. Fig. 6, back view of specimen 

 with wide spiral angle, X 6. Fig. 6 a, apex, greatly enlarged. Fig. 7, 

 front view of specimen with medium angle, X 8. Fig. 7 a, apex, 

 greatly enlarged. Fig. 11, front view of specimen with smaller angle, 

 X 8. Law, Dairy. Collection of Mr. Smith. 



Figs. 8, 10. M. {Hypergonia) deplanata, sp. nov. Fig. 8, front view, x 8. Col- 

 lection of Dr. J. Young. Fig. 10, apical whorls, X 7. Museum of 

 Science and Art, Edinburgh. Glencart, Dairy. 



Fig. 9. M. (Glyphodeta') fimbricarinata, Young & Armstrong, back view, X 5. 

 Fig. 9 a, portion of whorl, enlarged. Eobroyston. Collection of Dr. 

 J. Young. 



Plate X. 



Fig. 1. M. (Cerithioides V) Oweni, sp. nov., X 4. Owens College Museum, 



Manchester. Fig. 1 a, portion of whorl of another specimen, X 6. 



Todmorden. Museum of Practical Geology. 

 Figs. 2, 4. Worthenia tabulata, Conrad. Fig. 2, type of Portlock's M. angu- 



lata, nat. size. Fig. 2 a, portion of band, enlarged. Aghalurcher. 



Fig. 4, back view of another specimen, nat. size. Fig. 4 a, portion of 



fourth whorl from base, X 4. Fig. 4 b, band of penultimate whorl, 



enlarged. Slaidburn. Museum of Practical Geology. 

 Fig. 3. M. (Stegoccelia) Smithiana, sp. nov., X 6. Law, Dairy. Collection of 



Mr. Smith. 

 Fig. 5. M . ? (Glyphodeta ?) taniata, Phill, nat. size. Gilbertson Collection, 



British Museum (Natural History). 

 Figs. 6, 7. M. (Caliendrum) vittata, Phill. Fig. 6, front view of type, nat. size. 



Fig. 7, back view of another specimen, nat. size. Bolland. Gilbertson 



Collection, British Museum (Natural History). 



