NATURAL HISTORY SOCIETY OF GLASGOW. Ixxxiii 



Mr. D. A, Boyd showed specimens of the following plants 

 from the localities indicated, viz. : 



Arenaria (Aliiine) verna, L. — Meall Dhuin Croisg, Killin. — Rev. 



E. F. Linton, M.A. 

 Sphrerophoron conipressuvi, Ach. — Ben More, Perthshire (with 



apothecia). — Mr. E. M. Holmes. 

 S. coralloides (Pers.) Ach. — Kaim Hill, West Kilbride (with 



apothecia). 

 Stictina Thouarsii (Del.) Nyl.— Neighbourhood of Oban. — Mr. 



Holmes. 

 S. crocata (L.) Nyl. — Neighbourhood of Oban. — Mr. Holmes. 

 Physcia leucomela (L.) Mich. — Ballard Down Swanage.— 3fr. 



Holmes. 

 Lecanora (Placopsis) geUda (L.) Ach.— Portincross, Ayrshire 



(with apothecia). 

 Puccinia dioicce, Magnus. — JEcidiospores (^cidliim cirsii, DC.) 



on leaves of Cnicus pnlustris ; Killin. 

 P. obscura, Schrdt.— ^cidiospores (u3Ecidium compositarum. 



Mart., var. bellidis, DC.) on leaves of Bellis perennis ; Sea- 

 mill, Ayrshire. 



Mr. David Robertson, F.L.S., F.G.S., exhibited specimens of 

 Asrophyllum Alackaii (Turn.) Holm, et Batters, forma Rohert- 

 soni, Batters, a seaweed recently discovered by him at Loch 

 Banza, Arran.* 



Professor Edward E. Prince, B.A., F.L.S., read a paper on 

 Mauroliciis horealis, Nilss., one of the British phosphorescent 

 Fishes, which was illustrated with a series of specimens and 

 diagrams. He stated that the species, which measures from two 

 to three inches in length, appears to be a pelagic form, occurring 

 far out at sea, and probably at considerable depths, although 

 specimens have sometimes been taken at the shore, where they 

 may jjrobably have been di'iven during storms. A great number 

 were thus obtained at Redcar in 1852 ; several hundreds were 

 picked up on the sands at Aberdeen, a few years ago, by Mr. 

 Geoige Sim ; and Professor Prince was so fortunate as to obtain 

 a living specimen (afterwards accidentally destroyed) in a tidal 

 pool at St. Andrews. The photodisks, or phosphorescent organs, 

 are arranged in two rows along either side of the fish, and those 

 of the upper row differ somewhat in appearance from the others. 

 They are all sunk in the integument, and do not protrude through 

 its surface. They present the appearance of eye-like disks, with 

 a yellowish centre which is probably transparent in the living 

 state. Round what may be termed the yellowish pupil is a thin 

 silvery striated rim. The cornea, or outer lens, seems to consist 

 of two coats, the inner of which takes the usual carmine stain. 

 Beneath the cornea is the photodisk proper, which also consists 

 ♦ Transactions, vol. iil., p 270. 



