IS 



Part III. — Eleventh Annual Report 



others not formerly discovered in the district. Mr Scott's paper is 

 illustrated by four plates from the hand of his son, Mr Andrew 

 Scott. 



The Invertebrate Fauna of Inland Waters. — In continuation of 

 his previous researches on the nature and distribution of the 

 crustacean and other fauna of inland waters, Mr Scott last year 

 investigated Loch Morar in Argyleshire, the results being contained 

 in a paper in the present Report. Loch Morar is a very deep 

 fresh-water loch, the deepest sounding taken by Mr Scott being 

 170 fathoms, or 1020 feet, and no living organism could be detected 

 in the mud brought up from this depth. Entomostraca were 

 abundant at and near the surface, but much fewer at 50 and 100 

 fathoms ; two or three species of pelagic Copepoda and five of 

 Cladocera were obtained, and from the bottom gatherings eight 

 species of Copepoda, five of Ostracoda, and sixteen of Cladocera. 

 A new Copepod was obtained, forming a new genus, Moraria. 



The Life-Histories and Development of the Food and 

 other Fishes. 



In the present Report, Professor Mlntosh contributes a valuable 

 paper on the eggs, young, and development of a number of the 

 food fishes, the work having been carried on, as in previous years, 

 at the Marine Laboratory, St Andrews. The eggs and larvae, 

 which have, for the first time in this country, been fully described 

 and figured at St Andrews Marine Laboratory, include the cod, 

 haddock, whiting, gurnard, ling, torsk, long rough dab, turbot, 

 brill, plaice, lemon dab, flounder, common dab, sole, sail-fluke, dab, 

 sprat, frog-fish, halibut, sand-eel, &c. 



In the present paper Professor M'Intosh describes and figures 

 the eggs and larvae of the poor-cod, the eggs and embryo of the 

 saithe or green-cod, the eggs of the halibut, &c, and also deals 

 with the special characteristics of certain young pleuronectids, 

 including the turbot, brill, and topknot, the spawning period of 

 the pollack, and certain pelagic eggs and young fishes which have 

 not been hitherto identified. Ripe eggs of the poor-cod were 

 artifically fertilised in June last year, and also obtained in the tow- 

 nets in the open sea, and the young fish were successfully hatched 

 from them, the larvae somewhat resembling those of the whiting 

 on emergence. The eggs of the saithe and halibut have also been 

 studied and described. The paper is illustrated by five plates. 



In the present Report will be found the second part of Dr J. H. 

 Fullarton's paper on the development of the plaice, the prelimi- 

 nary part having been published in the Ninth Annual Report 

 In this paper Dr Fullarton gives some of the results of his 

 investigation into the origin of the liver, heart, and renal organs 

 and the changes that take place in these before the absorption of 

 the whole of the yolk. The paper is illustrated by four plates. 



In the present Report will also be found a list of the pelagic 

 eggs, larval and young fishes procured by the ' Garland/ the iden- 

 tification having been undertaken by Mr A. J. Masterman, B.A., 

 at St Andrews Marine Laboratory under the supervision of 



