494 ..... Lransactions.—Zoology. 
generic name of Janella, Gray, 1850, was used, and arguments 
given for doing so. As Janella, Grateloup, 1s identical with Niso, 
Risso, the name can stand, but I think, with Pilsbry, that it ig 
tar better to reject any name which has been previously pro. 
posed in a generic sense, whether the first usage is valid or 
not. Mr. H. A. Pilsbry, in a letter to Mr. Charles Hedley, 
kindly communicated to me, gives the following weighty 
reasons: ‘‘ We never know when a name supposed to bea 
synonym is going to be revived for a section, sub-genus or 
genus, on account of characters formerly overlooked; and 
when the name happens. to be in a little-known group, un- 
familiar to us—Diptera for example—who is to tell whether a 
generic name is really a synonym or not?” I, therefore, use 
now the name proposed by Gould. | 
A. papillatus, Hutton. As this species has only been 
ficured by Simroth (A. verrucosus, Yon Mart., Nova Acta, Bd. 
54, pl. iv., fig. 11), and I had an opportunity of getting good 
specimens near Christchurch, I now give correct drawings of 
the animal, jaw and teeth of the radula (Plates XIV. and XV., 
figs. 6-11). I compared carefully Simroth’s description of the 
animal and anatomy of A. verrucosus, Yon Martens, 1889, 
with typical specimens of A. papillatws, Hutton, and the 
details of its anatomy published by Professor Hutton, and am 
- convinced that both are one and the same species. 
~The var. nigricans and fasciata, Von Martens, I never 
observed in adult specimens of A. papillatus. Young specl- 
mens of this species I found always mixed of the typical form 
and var. fasciatus, whilst in adult specimens the colour- 
markings of the latter had fully disappeared, but they showed 
somewhat different colours. Some were of a yellowish-brown, 
but others were dark olive, the latter very likely correspond- 
ing with the var. fasciatus in the young. The variety nigricans 
is rare. 
It seems to me that too much importance has been attri- 
buted to the colour and colour-markings of Athoracophorus, 
and this by scientists who have never seen the living animals, 
but only specimens more or less badly preserved in alcohol, 
which deteriorates the colour and form of the animals consider- 
ably. I have collected hundreds of Athoracophorus on both 
Islands of this colony, and can testify to the great variability 
of colour and colour-markings in the species. 
A. marmoreus, Hutton, is no doubt the same as 4. marmo- 
ratus, Von Martens, described by Dr. Simroth. The descrip- 
tion and figure of the animal given by Simroth corresponds 
very well with Hutton’s species, and in the main features 0 
the genital organs, according to the publications of both 
scientists, they also seem to me to agree. I had no specimen 
of A. marmoratus at my disposal, as was the case WI h 
