SUPPLEMENT. 



Page 15. Rhincalanus nasutus, Giesbr. 



Remarks. The form recorded by Th. Scott as B. (/inns. Brady, is un- 

 questionably the present species. 



Distribution. Scottish coast (Scott). 



Page 18. Paracalanus parvus (Glaus). 

 Distribution. Black Sea (Karawajew), Gulf of Guinea (Scott). 



Page 21. Pseudoealanus elongatus, Boeck. 

 Distribution. Black Sea (Karawajew). 



Page 21. The following species should be added: 

 Pseudoealanus graeilis, G. 0. Sars. 



(Suppl. PI. I). 



Specific Characters. Female. Body of still more slender form than in 

 the typical species, with the anterior division, seen dorsally, narrow oblong in 

 form, greatest width scarcely attaining l /- A of the length ; frontal part conspicuously 

 projecting, and, seen laterally, almost angularly curved in the middle. Lateral 

 parts of last segment of metasome obtusely rounded. Urosome very slender, 

 though scarcely exceeding half the length of the anterior division. Caudal rami 

 comparatively narrower than in P. elongatus. and more divergent. Anterior an- 

 tenna more elongated, reaching, when reflexed, to the end of the 3rd caudal 

 segment. Legs considerably more slender than in the typical species, with both 

 rami very narrow. Ovisac rather large, rounded oval in form, and somewhat 

 flattened, containing a number of globular, highly pellucid ova. 



Male resembling that of P. elonyatus, but having the anterior antennae 

 considerably longer. Last pair of legs of a structure very similar to that in the 

 male of the said species. 



