684 PROF. FLOWER ON ZIPHIOID WHALES. [NoV. 6, 



The Secretary exhibited, on the part of Mr. Gr. Dawson Rowley, 

 F.Z.S., an egg oiPauxis galeata, and read the following note by Mr. 

 Rowley on the subject : — 



"This egg oi Pauxis galeata was laid June 30, 1877, by a black 

 female, exactly like the male, except that in size she is a trifle smaller. 

 The two birds have been kept by themselves for several years in a 

 large aviary. The brown form of female' is also here in a different 

 cage ; and no communication has been allowed. The black female 

 lays eggs CFcry year ; but they have been previously always broken. 

 All the birds have been in my^jossession about eight or nine years. 



Prof. Flower, F.R.S., V.P.; read " A further Contribution to 

 our Knowledge of the existing Ziphioid Whales, of the Genus Mesop- 

 lodon." 



This communication contained a description of two skeletons and 

 several skulls of Cetaceans of the genus Mesoplodon from New Zea- 

 land, sent to England by Dr. Hector and Dr. J. v. Haast, preceded 

 by a review of the species of the genus at present ascertained to 

 exist. These appeared to be the following : — 



1. M. bidens (Sowerby) = M. sowerbiensis of Blainville and most 

 other authors. 



Hab. European Seas. 



2. M. europceus, Gervais. 

 Hab. North coast of France. 

 One example only known. 



3. M. densirostris (Blainville) = M. seychellensis (Gray). 

 Hab. Indian Ocean, Australia. 



4. M. layardi (Gray) = M. longirostris, Krefft = M. Jloweri, 

 'H.Siast = Callidon ffuenthei'i, Gray =Dolichodon traversii, Gray. 



Hab. Indian Ocean, Australia, New Zealand. 



5. M. hectori (Gray)-= M. knoxi. Hector. 

 Hab. New Zealand. 



Known only by a single individual, of which the skull, now in the 

 British Museum, is described in the present communication. 



6. M. grayi, Haast = Oulodon grayi, Haast. 

 Hab. New Zealand. 



A complete skeleton, in the Museum of the Royal College of Sur- 

 geons, is described in the present memoir. 



7. M. haasti, n. sp., = M. hectori (Gray), Hector, Trans. N.Z. 

 Inst. vol. vi. p. 86, and vol. vii. p. 362. 



Hab. New Zealand. 



A complete skeleton, now in the British Museum, described in the 

 present memoir. 



This memoir will be published entire in the Society's ' Transac- 

 tions.' 



' Cf. Sclater, Trans. Zool. Soc. vol. ix. p. 285, pl.liii. et. P. Z. S. 1870, p. 669. 



