CETACEA. 
Mamm . 53 
which the author compares and contrasts with rhinoceros horn, Rhytina 
mouth-plates, and other similar structures. 
^Balcena biscayensis. Under the name of B. cisarctica , Cope, E. B. 
Holder gives an account of three specimens, said to be of this species, 
stranded at different times on the east coast of North America ; Bull. 
Am. Mus. Nat. Hist. i. pp. 99-137. Four plates are given, showing the 
external and skeletal characters. The author believes that this species, 
supposed long ago to have become all but extinct, is now, owing to a 
cessation of pursuit since the discovery of the Greenland Right Whale, 
increasing in numbers, and regaining its former place as one of the 
important members of the Atlantic fauna. [Critique on this paper by 
J. A. Allen, Science, i. p. 598, and reply by author, op. cit. ii. p. 133. 
Discussion continued, op. cit. ii. pp. 134, 266 & 267.] ^On its occurrence 
on the east coast of Scotland ; T. Southwell, P. N. H. Soc. Glasg. v. p. 66. 
Balcenoptera. An abstract of Prof. Burmeister’s work on the Argen- 
tine species of this genus \cf. Zool. Rec. xviii. Mamm. p. 2] is given in 
Ann. N. H. (5) xii. p. 190. 
\Balcenoptera borealis. On a specimen taken on the coast of Essex ; 
W. H. Flower, P. Z. S. 1883, p. 513. The sternum in its natural relation 
to the ribs ig figured. 
Balamoptera australis. Notes on its skeleton, with figures of its pelvic 
bone and sternum; J. Von Haast, P. Z. S. 1883, p. 592. 
j Balcenoptera velifera , Cope, recorded from the Commander Islands ; 
L. Stejneger, P. U. S. Nat. Mus. vi. p. 74. 
^ Megaptera longimana. On remains from gravel on the line of the 
Canada Pacific Railway, near Smith’s Falls, Ontario, 440 feet above tho 
sea ; J. W. Dawson, Am. J. Sci. (2) xxv. p. 200, and Canad. Nat. x. p. 385. 
Megaptera indica , sp. n., H. P. Gervais, C. R. xcvii. p. 1566, Persian 
Gulf. 
>/ Megaptera lalandii. Description of the skeleton of a specimen stranded 
in New Zealand ; J. Von Haast, Tr. N. Z. Inst. xv. p. 214. 
^ Pachycetus robustus and humilis, g. & spp. nn. (foss.), P. J. Van 
Beneden, Bull. Ac. Belg. (3) vi. p. 27, Oligocene of Lower Brunswick. 
Zeuglodontidji. 
^ Zeuglodon. On remains found in Egypt ; W. Dames, SB. Ak. Berl. 
1883, p. 130, and SB. nat. Fr. 1883, p. 3. The first occurrence of this 
genus in Africa. Two forms were found, corresponding to Muller’s 
Z. macro spondylus and brachyspondylus , from America, and the author 
suggests that these may be merely the two sexes of the same species. 
Physeterid^. 
^ Ilyperoodon rostratus. A general account of this species ; T. South- 
well, Tr. Norw. Soc. iii. p. 476. 
A Kogia greyi. Description and figures of its brain ; W. A. Has well, 
P. Linn. Soc. N. S. W. viii. p. 437, pi. xxi. 
