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Part III. — Twenty-seventh Annual Report 



1905. 



February. — Four gatherings, compiising two horizontal and two 

 vertical hauls, were collected at this station in February 1905. One of the 

 horizontal hauls was taken at the surface and the other at the bottom, and 

 measured respectively 25 and 14 c.c.'s. Both gatherings consisted for the 

 most part of Calanus, but in the surface hauls the following species were 

 also met with : — Euchceta norvegica, Pseudocalanus elongatus, and Oithona 

 similis; a few Decapod larvae and fish ova also occurred. The species 

 observed in the bottom haul included Bradyidius armatus, Euchceta, 

 Acartia clausi, Ephimedia obesa, Epimeria cornigera, Paratylus bispinosus, 

 Nyctiphanes, and Mysis sp. 



The vertical haul from 15 fathoms consisted almost entirely of Calanus, 

 and that from 28 fathoms was somewhat the same, except that a few 

 species similar to those already referred to were also observed. The two 

 vertical hauls were about equal, and each measured 2*5 c.c.'s. The 

 quantities of these gatherings, both the horizontal and the vertical hauls, 

 seemed to indicate that pelagic Crustacea were rather more plentiful in the 

 upper strata than they were near the bottom. 



March. — Seven gatherings were collected in March ; three of them 

 were horizontal and four were vertical hauls. The horizontal hauls 

 included a surface, a mid-water, and a bottom gathering, and measured 

 respectively 6, 10, and 30 c.c.'s, and they consisted almost entirely of 

 Calanus, The vertical hauls comprised two from 15 fathoms and two 

 from the bottom. The first two were very small ; the other two, though 

 slightly larger, were also small, and together measured less than 2 c.c.'s, 

 and consisted chiefly of Calanus. A small number of Pseudocalanus were 

 also observed in the bottom gatherings. 



April. — Three horizontal and two vertical hauls were collected at this 

 station in April. The horizontals included a surface, mid-water, and 

 bottom gathering, and measured respectively 5, 17, and 3 c.c/s. The 

 contents of the first two consisted chiefly of Calanus, but Centropages also 

 occurred in both and formed about 5 per cent, of the combined catch. 

 One or two other common forms were also observed in these hauls. In 

 the bottom haul Calanus and Centropages were equally numerous, and 

 together formed about 70 per cent, of the gathering, and Pseudocalanus 

 about 1 5 per cent. 



Both the vertical hauls were small, and only measured 1*5 and 1 c.c. 

 respectively. The contents of these gatherings were similar in variety 

 and proportion to that of the horizontal bottom haul. 



May. — The gatherings collected at this station in May comprised two 

 horizontal and four vertical hauls. The horizontal gatherings were both 

 small ; one was from the surface and the other from the bottom. The 

 vertical hauls included two from 15 fathoms and two from the bottom ; 

 all the catches were small, and did not differ greatly as to quantity. The 

 total catch did not exceed 4 c.c.'s. The gatherings consisted chiefly of 

 Calanus ; other species sparingly met with included Pseudocalanus, Centro- 

 pages, Parapontella, Temora, Acartia clausi, Evadne, and Podon leuckarti. 



June. — Pelagic Crustacea appeared to be scarce at this station in June. 

 Two vertical hauls, one from 15 fathoms and one from 25 fathoms, 

 measured less than *5 c.c. each. The most common species was Centro- 

 pages hamatus, but Calanus and Pseudocalanus in about equal numbers 

 also formed a considerable portion of the catch. A few Temora, Acartia 

 clausi, Sagitta, and Decapod larvae were also observed. 



August. — Pelagic Crustacea, though still apparently scarce, were rather 

 more numerous than in June. The variety and proportional numbers of 

 the species taken in the two hauls from 15 and 28 fathoms were, however, 

 somewhat similar to those obtained in the June gatherings. 



