33 



bv the present writer in the ' Quart Journ. Geol. Soc/ 

 vol. xliii. p. 11, pi. ii. figs. 4, 4 a. 



Made in the Museum, 1886. 



42996 b. A slightly imperfect early caudal vertebra of a very large 

 "Whale, apparently agreeing very closely in size and pro- 

 portions with the third caudal of the present species 

 figured by Yan Beneden in the 'Ann. Mus. R. Hist. Nat. 

 Belg.' vol. vii. pt. 3, pis. xlv., xlvi. ; from the Antwerp 

 Crag. Van Breda Collection. Purchased, 1871. 



46738. The centrum of a middle caudal vertebra, perhaps belonging 

 to this species ; from the Red Crag of Woodbridge, 

 Suffolk. Purchased, 1875. 



Megaptera similis (Van Beneden T ). 

 Syn. Burtinopsis similis, Van Beneden 2 . 



This species is considerably smaller than the last ; the form of the 

 tympanic appears almost indistinguishable from that of M. loops. 

 Hob. Europe (Belgium and [?] England). 



39020. A left periotic, provisionally referred to this species ; from 

 the Red Crag of Woodbridge, Suffolk. The narrow elon- 

 gated form of the portion containing the semicircular 

 canals shows that this specimen (which is apparently 

 adult) belongs to the present genus, as distinct from Balce- 

 noptera or Cetotherium ; it is of much smaller size than 

 the periotic of M. affinis figured by Van Beneden in the 

 * Ann. Mus. R. Hist. Nat. Belg.' vol. vii. pt. 3, pi. xlii. 

 fie:. 4 ; and since it appears too large for M. minuta, the 

 probability is that it belongs to the present species. The 

 specimen has been noticed by the writer in the ' Quart. 

 Journ. Geol. Soc.' vol. xliii. p. 11. Purchased, 1865. 



Megaptera minuta (Van Beneden 3 ). 

 Syn. Bvrtinoptu minutus, Van Beneden 4 . 

 This species is about equal in size to Balcenoptera rostrata ; the 



1 Bull. Ac. E. Belg. ser. 2, vol. xxxiv. p. 19 (1872). Burtinopsis. 



2 Loc. cit. 



3 Ibid. vol. 1. p. 17 (1880). Burtinopsis. 

 * Loc. cit. 



