ENTOMOSTRACA FROM THE GULF OF ST. LAWRENCE. 49 



1873." It is a widely distributed form in the North Atlantic, 

 and occurs sometimes in great abundance. 



Eurytemora herdmani, I. C. Thomson and A. Scott.* — A 

 considerable number of specimens of this Eurytemora were 

 obtained in a gathering collected by " towing net " in the Gulf 

 of St. Lawrence in 1873 ; it also occurred in the samples from 

 Griffins Cove and Shediac Bay. The species was described from 

 specimens collected by Professor Herdman, of Liverpool, in the 

 St. Lawrence, chiefly between Quebec and Rimouski, in August 

 and September, 1897. Though Professor Herdman found the 

 Eurytemora common between Rimouski and Quebec, it became 

 scarcer to seaward, and none were obtained east of Anticosti 

 Island. It would appear from this, that like the other members 

 of the genus Eurytemora, the distribution of E. herdmani is 

 limited to water that is more or less of a brackish character. 

 Two forms of this species, a larger and a smaller, were obtained. 

 The smaller differed from the larger and typical form by pos- 

 sessing slightly fewer spinules on the spines of the fifth foot 

 of the female. For the purpose of distinguishing this small 

 form it might be called variety minor (see PL II., figs. 1 and 2). 



Anomalocera pater soni, Templeton. — A single example of this 

 fine species Avas obtained in a gathering collected by towing 

 net in the Gulf of St. Lawrence in 1873, but the exact locality 

 is not given. It is a large and easily recognised species. 



Labidocera cestiva, Wheeler. — PI. II., figs. 3 and 4. — Two or three 

 specimens of a Pontella-like form, which my son identifies as 

 Wheeler's Labidocera aestiva, occurred in the gathering collected 

 in Shediac Bay. The species is described by Professor Wheeler 

 in Vol. XIX. of the Bulletin of the United States Fisheries 

 Commission. Shediac Bay appears to be a new station for 

 this species. 



Acartia clausi, Giesbrecht. — PI. II., figs. 9 and 10. — This species 

 occurred very sparingly in the same gathering with the 

 Labidocera, and in another collected off Griffins Cove. It was 

 also 6bserved in a third gathering, but the exact locality is not 

 stated. A. bifihsa resembles somewhat closely the Acartia 



* 1897. Eurytemora herdmani, Thompson and Scott, Liverpool Biol. 

 Soc, Vol. XII., p. 78, PI. v., figs. Ml. 



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