264 mr. f. moore on the [May 5, 



the skull, and forming there a crest of considerable size on the right 

 side only. 



Unfortunately I have not access to all the necessary works of 

 reference to inquire if this question, as to the causes, growth, and 

 uses of asymmetry in the Toothed Vv'hales, has already been treated 

 by naturalists in the northern hemisphere ; but it is evident, from 

 an examination of the drawings representing the three views of the 

 foetal Cachalot (Catodoii) in the Museum of the Royal College of 

 Surgeons, that the remarkable asymmetry exists already in that early 

 stage of existence. 



On the other hand I may ask, why should the Balcenidce have a 

 symmetrical skull, breathing, as they do, exactly in the same manner 

 as the Toothed Whales ? Eschricht, who has described the impor- 

 tant changes which the skulls of the Balcenidce undergo, has shown 

 that they are in the fcetal state quite symmetrical, although later 

 on slight inequalities in the maxillae are sometimes discernible. 



As far as I am aware, no cognizable reason can be given to account 

 for this asymmetry in the skull of the Toothed Whales, and we are 

 therefore almost led to assume that some of their remote ancestors 

 were deformed by some accident and that thus this asymmetry of 

 the skull was inherited by their progeny to a more or less extent, 

 because it is difficult to believe that in the struggle for existence, in 

 the adaptation to altered eircumstances and a different mode of life, 

 this strange asymmetry could be of any vital importance. 



The study of the ontogeny of this species and of the phylogeny 

 of the family to which it belongs, and of its extinct ancestors is 

 therefore of the highest importance in considering the question of 

 the origin of species; because every step in that direction is a clear 

 gain to science. 



It may be possible that this point has already been treated at 

 length by some naturalists ; but I am not aware that this is the case ; 

 and my wish to draw the attention of my brother naturalists in New 

 Zealand, and other countries where an opportunity is offered by 

 acquiring specimens of Toothed Whales in all stages of growth to 

 study this striking fact in osteology, has been my only motive for 

 alluding here more fully to it than I should otherwise have done. 



3. List of Diurnal Lepidoptera collected in Cashmere Terri- 

 tory by Capt. R. B. Reed, 12th Regt., with Descriptions 

 of new Species. By Frederic Moore, India Museum, 

 London. 



[Eeceived March 27, 1874.] 



(Plate XLIII.) 



The only notices hitherto published of the species of Lepidoptera 

 known to inhabit Cashmere are those by Kollar in Hugel's * Kash- 

 mir,' and recently by Capt. Lang of a small collection made at 

 Goolmurg by the late Dr. Jerdon. 



