Notes from the Gatty Marine Laboratory. 167 
99. Delias? d’ Albertisi. 
3. Pieris d Albertisi, Oberthiir, Ann. Mus. Civ. Genova, xv. p- 480, 
pl. iv. fig. 4 (1879-80). 
2. Delias discus, Honrath, Berl. ent. Zeit. xxx. p. 130, pl. iv. fig. 4 
(1882), 
New Guinea. 
A curiously coloured species, vaguely resembling Tenaris 
and Dyctis. 
Since the completion of this Revision Mr. Grose Smith 
has described three additional species in the Ann. & Mag. 
Nat. Hist. for April, 1897, p. 403. 
XIV.—Notes from the Gatty Marine Laboratory, St. Andrews. 
e-Ne. XVIII. By Prof. M‘Inrosa, M.D.,. LL.D., 
HRD. 
[Plate III.] 
1, On the Phosphorescence of Gattyana (Nychia) cirrosa, Pallas. 
2. On a new Lvarne (£. atlantica) from Rockall. 
3. On the British Species of Pholoé. 
4, On a Collection of Annelids made by Canon Norman in Norway. 
—Part I. New Kvarne and Two Species of Sthenelais. 
1. On the Phosphorescence of Gattyana (Nychia) cirrosa, 
Pallas. 
The alteration of the generic name of this not uncommon 
species, as Dr. Merle Norman has shown in a carefully prepared 
manuscript on the subject, which I have had the privilege of 
perusing, is necessary, since the name Nychia, given to it by 
Malmgren in 1865, had already been used by Stal for one of 
the Hemiptera. 
G. cirrosa has long been knownas a commensalistic Polynoid 
in the tubes of Chetopterus. Hitherto, however, the specimens 
of this annelid on the Kast Coast have chiefly been procured 
after storms or from deep water. Lately they have been 
frequently found as commensalistic forms in the tubes of 
Amphitrite debilis, Dalyell (Johnstoni, Mgrn.), and of compa- 
ratively large size. The fact that such species as Polynoé 
scolopendrina, habitually found in the tubes of Teredelle, are 
phosphorescent suggested experiment in the present instance, 
with the result that G. cirrosa was also found to possess this 
property. Irritation in the dark causes the scales to gleam 
12* 
