Notes from the Gatty Marine Laboratory. 167 99. Delias^ d' Albertisi. S . Pieris ffAlhertt'si, Oberthiir, Ann. Mas. Civ. Geuova, .w, p. 480, pi. iv. fig. 4 (1879-80). 2 . Delias discus, Honrath, Berl. ent. Zeit. xxx. p. 130, pi. iv. fio-4 (1882). f > i' o 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. & Mao-. Nat. Hist, for April, 1897, p. 403. XIV. — Notes from the Gatty Marine Laboratory, St. Andrews. —No. XVIII. Bv Prof. M'lNTOSH, M.D., LL.D., F.R.S. [Plate III.] 1. On the Phosphorescence of Gattyana {Nychia) cirrosa, Pallas. 2. On a new Erarne {E. atlantica) from Rockall. 3. On the British Species of Pholoe. 4. On a Collection of Annelids made by Canon Norman in Norway. — Part I. New Evanie 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 known as a commensalistic Polynoid in the tubes of Ghcetopterus. Hitherto, however, the specimens of this annelid on the East 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 Polynoe scolopendrina, habitually found in the tubes of Terebelloi, 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*
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