APSENDESIA. 171 



Cambridge Museum, and these leave no doubt as to the correctness 

 of Haime's conclusion. Haime, however, kept the species distinct, 

 apparently regarding those in which the radial crests do not reach 

 the centre of the zoarium, as the young of another species. Six 

 specimens in the Museum collection (D. 2227) show that this 

 distinction does not hold, and that therefore the Pelagia dypeata 

 of Lamouroux is the young stage of Apsendesia cristata. 



LIST OF SPECIMENS. 



24770. Forest Marble. "Wiltshire. Cunnington Coll. Figd. PI. IX. Fig. 4. 



D. 23. Bradford Clay. Bradford, Wilts. 



D. 1761. Great Oolite. Bath. Gray ColL 



38596. The Defrancia stage. Great Oolite. Burford, Wilts. J. Wood 



Coll. Figd. PI. IX. Fig. 5. 



D. 2185. Inferior Oolite. Near Leckhampton. Brodie CoU. 

 D.2206. 



D. 2227. The Defrancia stage. Bathonian. Ranville. Tesson Coll. 

 D. 2118. Just beyond the Defrancia stage. Bathonian. Ranville. Tesson 



Coll. 



D. 2226. Bathonian. Ranville. Tesson Coll. 

 60369. With Entalophora cellarioides, etc. Bathonian. Ranville. Tesson 



Coll. 

 60364. Bajocian. Les Moutiers, Vienne. Tesson Coll. 



2. Apsendesia parvecristata (Waagen), 1868. 



SYNONYMY : 



Theonoa? parvecristata, Waagen, 1868, Zone Amm. sowerbyi: Geogn. Pal. 

 Beitr. Bd. i. Ht. 3, p. 613, pi. xxxii. fig. 11. 



Diagnosis. Zoarium massive, encrusting. The zooecia open in 

 small groups, each of about three or four zooecia in number. These 

 are irregularly arranged. 



DISTRIBUTION. 



FOREIGN : 



Bajocian Zone of Sonninia sowerbyi : Gingen, Wiirtemberg. 

 ? ,, ,, ,, Flace, near Ma9on. 



Affinities. This species is characterized by the small, irregu- 

 larly distributed groups of zooecia, which at once distinguish it 

 from all the Jurassic species. It is not represented in the British 

 Museum Collection. 



