nSHEET BOARD FOE SCOTLAND. 89 



bodying the results of his dissections of two specimens. The same 

 gentleman, in last year's Report, furnishes Notes on an Intra-uterine 

 Specimen of the Porbeagle* 



A Note on the Ova, Fry, and Nest of the Ballan Wrasse {Lahrus 

 maculatus), by Mr. Duncan Matthews, appeared in the Report for 

 1886. t The very curious nests of this species, the ova, and the 

 appearance and remarkable habits of the embryo, are carefully 

 described. 



Descriptions of new or rare fishes, which have been obtained by 

 the Fishery Officers or otherwise, have been given from time to 

 time. Thus a new British blenny (Lumpenus lamproetiform.i8) has 

 been described and figured by Dr. Francis Day;f and Torpedo 

 nobiliana, Bhombus maximus, and Lampris luna have been described, 

 and the two first figured by Professor Ewart.§ Among the rarer 

 fishes obtained may be mentioned Carelophus ascanii (Walb.) ; 

 Ctenolabrus rupestris, L. ; Centrolabrus exoletus, L. ; Motella cimhria, 

 L. ; Zeugopterus unimaculatiis (Risso) — which is figured — Pristiurus 

 melanostomus (Raf.), &c.I| Mr. Brook gives an account of the 

 remarkable chromatic changes in the Dragonet {GalUonymus lyra).% 



Several papers have appeared in the Reports dealing with patho- 

 logical conditions in fish, and with the presence of micro-organisms 

 in river-water. 



Dr. Barret gives A Note on the Liver of a Haddoch, in which a 

 Sand-eel was partly Embedded,*^ describing the naked-eye and 

 microscopic appearances ; and Dr. Woodhead gives an account of 

 Gaseous Tumours found in the Muscles of the Hake.f-f 



There are three papers by Professor Greenfield (who was assisted 

 in this research by Dr. Griffiths, Dr. Woodhead, and Dr. J. 

 Gibson), On the Examination of River- Waters for Micro-organisms.^'^ 

 The object of this investigation was to discover and describe the 

 various forms of minute fungi, and especially bacteria, which are 

 present in river water, and which form an important factor in its 

 impurity in relation to fish life. Specimens of water from important 

 salmon rivers such as the Tweed, the Dee, and the Tay, were 

 examined. Full details are given as to the methods adopted in 



* Sixth Report, Part iii, p. 263, 1888. 



t Fifth Report, pp. 244—247, pi. xi, 1887. 



J Second Report, p. 78, pi. x, 1884. 



§ Op. cit., pp. 79, 80, pis. xi — xiii. 



II Fourth Report, pp. 222—227, pi. ix, 1886, 



T Third Report, p. 68, 1885. 

 ** Op. cit., p. 70, with three plates, 

 tt Op. cit., p. 76. 



It Op. cit., pp. 73—76; Fourth Report, pp. 176—188, 1886; Fifth Report, pp. 331— 

 347, 1887. 



