THE NAUTILUS. 55 



tely: " The radula and jaws or any representatives of such 

 structures are entirely absent." 



The reasons set forth by Dr. O'Donoghue for disagreeing 

 with Bergh's classification are to my mind not warrantable. 

 This author, in fact, compares it with Tetliys Linnaeus, with 

 which it disagrees in several respects, and he uses this as a 

 reason for placing it in the genus created by Gould. Neither 

 Cooper nor Fewkes made an intensive study of the type, 

 which is evident from their description; a careful study of 

 Gould's Chioraera, I think, will bring out sufficient reasons 

 to merge it with Melibe as indicated by Tryoii, Jr., (1883) 

 and Bergh (1908). And as shown in my work on the mor- 

 phology of Melibe (s. Chioraera) leonina (Gould), now in 

 press, the general characteristics as well as the structure of 

 Chioraera leonina Gould, correspond in many details with 

 those of the Melibes of Bang, Pease, Bergh, et al. For this 

 reason I have adopted, and indeed used in previous writings 

 (1919, 1921) the name as indicated by Tryon, Jr., and by 

 Bergh, and also suggested to me by my friend, Professor 

 Trevor Kiiicaid, viz., Melibe leonina. Chioraera leonina 

 (Gould) stands as synonym of this. The correctness of this 

 classification may be verified by comparing the descriptions 

 of Rang, Alder and Hancock, Gould, Pease, Eliot, Bergh, 

 and Kjerschow-Agersborg, et al. 



References : 



1864, Alder, J. and Hancock, A. Notice of a collection of 

 Nudibranchiate Mollusca made in India, by Walter 

 Elliot Esp., with descriptions of several genera ancl 

 species. Tethidae, Aid. & Hanc. Trans. Zool. Soc. Lou- 

 don, 5. 



1863, Bergh, R. Campaspe pusilla, en ny claBgtform af Den- 



Jt/ dro/otidernes gruppe, saint bermerkinger om Dotidernes 

 familie. Prof. J. C. Schiodte, / Naturhistirisk Tids- 

 skrift, 3 Ba^kke, 1 bind, 3 hefte. Kjobenhavn. 



1871. Doto, Oken; Scyllaea pelagica. Beitrage zur Kenntniss 

 der Mollusken des Sargassomeeres. Verh, zool,-bot. 

 Gesell. in Wien, Bd. 21, Seit. 1275-1276, 1288, 1292. 



1875, C. Semper, Reisen im Archipel der Philippiuen, II, 2, 

 Heft. 9. 



1880, Beitrage zur Kenntniss der Japanischen Nudibranchien 

 I, (Melibe vexillifera) , Verh. zool.-bot. Gesell., 30. 



