TEREBELL ARIA . 189 



Terelellaria antilope, Michelin, 1846, op. cit. p. 232, pi. Iv. fig. 11. 



? ,, ,, M'Coy, 1848, New Mesoz. Rad. : Ann. Mag. Nat. Hist. 



ser. 2, vol. ii. p. 419. 



,, ,, Bronn, 1848, Nomencl. p. 145. 



,, ,, Bronn, 1849, Enum. p. 1225. 



,, D'Orbigny, 1849, op. cit. t. i. p. 318. 



,, ,, Bronn, 1851, Leth. Geogn. ed. 3, Bd. ii. Th. 4, p. 93, 



pi. xvi. fig. 12. 

 ,, ,, D'Orbigny, 1852, Pal. franc;. Terr. cret. t. v. p. 885, 



pi. Dcclxiii. figs. 14-18. 

 ? ,, ,, M'Coy, 1854, Contrib. Brit. Pal. p. 67. 



,, ,, Morris, 1854, op. cit. ed. 2, p. 129. 



Millepora sp. Win. Smith, 1816, Strata ident. p. 30, pi. xvii. fig. 5. 

 Terebellaria tennis, D'Orbigny, 1849, op. cit. t. i. p. 318. 

 ,, D'Orbigny, 1852, op. cit. p. 885. 



Diagnosis. Zoarium massive, branfehing irregularly. Apertures 

 in rows of from 3-5 ; the lower limit is straight, but the upper is 

 very irregular. Apertures in these bands crowded and quincuncial. 

 Peristomes slightly raised. 



DISTRIBUTION". 



BRITISH : 



Cornbrash : Stanton. 



Forest Marble : Islip. 



Bradford Clay : Bradford ; Box ; Fairford ; Tetbury Road. 



Great Oolite : Bath ; Hampton ; Bradford. 



Fuller's Earth : Fairleigh ; Hungerford. 



Inferior Oolite : Cleeve Hill, near Leckhampton. 

 FOREIGN : 



Bathonian : Caen, Ranville, Lebisey, Langrune, Luc, Benouville, 

 St. Aubin, etc., in Calvados. 



Description of Figures. PI. X. Fig. 5. Part of a branch, with 

 zones of zooscia and interzones of dactylethra?, X 12 dia. Bradford 

 Clay: Box, Wilts. Buy Coll. 23857. Figs. No. 16 and 17. 

 Longitudinal and transverse sections of a specimen from the Great 

 Oolite, Bath, x 10 dia. D. 1762. 



Affinities. As this is the type and only known species of the 

 genus, it is unnecessary to discuss its affinities. Its structure is 

 of great interest, and is illustrated by the accompanying figures. 

 Pig. 17 shows a transverse section across part of the central axis of 

 a colony, surrounded by concentric layers of zooacia. The mode 



