of the Fishery Board for Scotland. 



291 



south-east of the Island of May, and again close to the western shore of the 

 island it was common. Nauplii were abundant in the Bay all August 

 along with Evadne Nordmauni and Ostracoda. Zoea3, apparently those 

 of Portunus holsatus, were in great numbers on the 17 th, and Diastylis 

 Rathhii, Cuma bispinosa (young), and Hyperia medusarum were also noted. 



In the open water, south of the Bell Rock (trawling ground), be- 

 sides Calanus finmarchicus there were Acartia longiremis, Centropages 

 hamatus, C. typicus, Halitemora longicornis, the two latter in great 

 numbers, and Pseudocalanus elongatus, so that there was no great differ- 

 ence in the forms in the bottom-net. Zoese and the Megalops-stages were 

 still, however, more numerous ; and there were many young examples of 

 Pandalus annulicornis, Hippolyte, and Nephrops, besides Evadne Nord- 

 manni and Ostracoda. Young Pandali were also plentiful west of the 

 Island of May. 



Copepods were less numerous in the mid-water net in the Bay, the 

 forms observed in limited numbers being Halitemora longicornis, 

 Centropages typicus, and Pseudocalanus elongatus ; and Caligus rapax. 

 The young of Nephropx, Crangon, Pandalus, Hippolyte, Pagurus, and 

 G'dathea also appeared in this net, along with Mysis chamceleon, M. 

 vulgaris, M. fiexuosa, Crangon vulgaris, Liljrborgia zetlandica (female 

 with ova and nearly fully developed embryos), Dulichia porrecta, Hyperia 

 medusarum (swallowed by Pleurobrachia), zoese of Norway lobster, and 

 Megalops-stage of crabs, and young crabs *6 of a mm. 



In the open water this net presented a larger number of zoeae, and the 

 Megalops-stages, besides the young of Nep>hrops, many young Pandali, 

 Caligi, male and female, the latter bearing ova and occasionally also the 

 parasitic, Udonellacaligorum, Centropages hamatus, Anomalocera Pater sonii, 

 the latter species being only found in this region, and the Cyp?*is-stage of 

 Cirri pedes. A very young example of Hyas coarctatus, a female Crangon 

 vulgaris bearing ova, and Pandulus annulicornis in the same condition 

 also occurred. To the west of the Island of May (\ mile) were a few 

 Copepods, young Amphipods, Crangon vulgaris, Mysis fiexuosa, M. 

 vulgaris, and Boreophausia Raschii. A few young crabs about J inch 

 were likewise obtained. 



The surface-nets in the Bay during August exhibited a somewhat 

 greater abundance of crustacean life than in July. Copepods, such as 

 Acartia longiremis, Centropages hamatus, C. typicus, Longipedia coronata, 

 Halitemora longicornis, and Oithona spinifrons, in greater or less numbers, 

 and occasionally a Cyclopina ; Evadne Nordmanni, Ostracoda, and Nauplii 

 were common. The long-spined zoeae of Porcellana and the Megalops- 

 stage of Portunus and others were frequent, and also a few of unknown 

 relationships. A young Anceus also occurred at the end of the month, 

 and it is interesting that this form is not unfreqnently found attached 

 like a parasite to the young flounders in the harbour. Exuvise of 

 C impedes were also common. 



As a contrast with the inner waters, those south-east of the Bell Rock 

 presented in the surface-nets Acartia longiremis, Centropages typicus, C. 

 hamatus, Halitemora longicornis, and Pseudocalanus elongatus, with swarms 

 of Calanus finmarchicus, which was not found in the previous surface-area. 

 Evadne, zoea3 in numbers, and a few examples in the Megalops-stago 

 were also obtained. 



One of the most marked features of the water in the neighbourhood of 

 the Bay, as near the Isle of May, was the great abundance of the larval 

 and post-larval stages of the Norway lobster. Mingled in the nets with 

 the long trailing tentacles of Cyanea, they formed an inextricable rope 

 or chain. 



