Bistrihiiiion of British Carboniferous Nautiloids. 409 



A. latum Hind.^ — Upper Dibunophylluni zone. 4 Laws Lime- 

 stone, Combe, Northumberland. 



A. discus Sow. — Probably C or S horizon. Kendal. 



Mesochasmoceras Foord. 

 MesocJiasmoceras latidorsatum M'Coy. — Clane, co. Kildare, and 

 Argone South and Cragard, co. Limerick, Ireland. 



DiORUGOCERAS Hyatt. 

 Diorugoceras planidorsatum Portlock. — Derrylorran, Tyrone, 

 Ireland. 



Triboloceras Hyatt. 

 Type. — T. serratum de Koninck. 



Triboloceras formosum Foord. — Seminula zone. From the 

 Crinoid Bed, Slaidburn, Yorkshire. Lisbane, co. Limerick, and 

 Garrikies, co. Kerry, Ireland. 



Vestinautilus de Ryckholt, 1852, emend. Hyatt. 



Type. — V. TconincTcii d'Orbigny. 



Vestinautilus semiglaber Foord. — Lisbane, co. Limerick, Ireland. 



V. crassimarginatus Foord. — Upper Dibunophyllum zone. Parwich, 

 Derbyshire. Little Island, co. Cork, Ireland. 



V. cariniferus J. de C. Sowerby. — C. Sj. Thornley Quarry, near 

 Chipping, Lancashire. Clane, co. Kildare, Enniskillen, co. 

 Fermanagh, Rathkeale and Ardtomen, co. Limerick, Ireland. 



V. crateriformis Foord. — C.-S. Clitheroe, Lancashire ; Kniveton, 

 Derbyshire. Rathkeale, co. Limerick, Ireland. 



V. pinguis de Koninck. — Kniveton, Derbyshire. Cloghran and 

 St. Doolaghs, CO. Dublin, and Askeaton, co. Limerick, Ireland. 



V. paucicarinatus Foord. — St. Doolaghs, co. Dublin, Clane, 

 CO. Kildare, Little Island, co. Cork, Ireland. 



V. multicarinatus J. de C. Sowerby. — Kniveton, Derbyshire. 



CcELONAUTiLUS Foord, emend. Hyatt. 



Type. — C. planotergatus M'Coy. 



Coelonautilus planotergatus M'Coy. — Upper Dibunophyllum zone. 

 Thorpe Cloud, Castleton, Bradbourne, and Pindale, Derbyshire ; 

 Withgill, Lancashire ; 4 Laws Limestone, Combe, Redesdale, 

 Northumberland ; Elbolton, Craven, Yorkshire ; Poolvash, Isle of 

 Man. Little Island, co. Cork, and Rathkeale, co. Limerick, Ireland. 

 Vise, Belgium. 



C. rawsoni Inglis.- — Lower Coal-measures. Above the Bullion Coal, 

 Burnley, Lancashire ; above the Bullion Coal, Halifax and Shebden, 

 and Millstone Grit Series of Eccup and Marsden (Pale Hill), 

 Yorkshire. C. trapezoidalis W. Jackson is a synonym. 



C. doohylensis Foord. — Elbolton, Yorkshire. Doohyle, near 

 Rathkeale, Ireland. 



C. gradus Foord. — ? Clane, co. Kildare, and Rathkeale and 

 Curraghb ridge, co. Limerick, Ireland. 



