NORTH ATLANTIC SEA AND THE FARuE CHANNEL. 135 



with a quantity of red pigment diffused, especially about the mouth 

 organs ; size, about 10 mm. 



-&'. harhata. Last thoracic segment rounded on each side. Genital 

 segment not so swollen as the other two species, swelling occupying the 

 middle of the segment, more protuberant above than below ; genital 

 orifice oval, broader than long, guarded by lateral lamellar swelling on 

 each side. Second foot, with marginal spine of exopodite 1 stout and 

 reaching the end of the first spine of exopodite 3 ; second spine of 

 exopodite 3 not reaching the end of the segment. First foot, with 

 exopodite distinctly segmented into 3. Appendicular bristle long. 

 Colour always bright red, feet and mouth organs coloured red ; size, 

 10-11 mm. ; very hirsute. 



Haloptilm. II. acutifrons (Gbt.), recorded by Sars once from the 

 Polar Sea and once from the Norwegian Sea, occurred twice only in the 

 Atlantic townettings. H. loiujicornis, recorded by Sars once only from 

 a station between Finmark and Bear Island, was captured several times 

 in the North Atlantic, and once only in the Faroe Channel cold area. 



Neither of these species can be regarded as indigenous to the north 

 cold ocean. Tlieir distribution is pronouncedly southern, and H. lonyi- 

 cornis extends from the Mediterranean to the Indian Ocean, where it is 

 very common round the Maldive Islands. 



Av.(japtilus. The occurrence of several members of this genus in 

 the North Atlantic is interesting. Only one of them am I able to 

 thoroughly identify with any species described in the list of Giesbrecht 

 and Schmeil {Das Tierreicli, "Copepoda"), only three of which, by 

 the way, are European, four being Pacific Ocean species, and one 

 recorded only from the Gulf of Guinea, 



The description of Aiujajptilus fjlacialis (Sars), said by this authority 

 to be a Polar species, is not at the moment of writing available 

 to me. The J briefly described by I. C. Thompson is in all proba- 

 bility not this species at all, the size given by Thompson,* 4 mm., 

 being greatly in excess of that of A. palumhoi (Gbt.), viz. 2*25 mm. 

 ? , and no truly Pacific Ocean f forms have yet been recorded 

 from the North Atlantic. While the three species taken by Scott 

 in the Gulf of Guinea appear to be as much epiplank tonic as meso- 

 planktonic (25-360 fathoms), in the " Oceana " report the AugcqMus 

 species appear to be only niesoplanktonic, all being captured at 1,000 

 fathoms or under. In the North Atlantic none of my species appeared 

 above 300 fathoms. Two of them are new, and only one, A. lon>/i- 

 cav.datas (Glaus) has a wide range (Mediterranean, Gulf of Guinea, 

 and Pacific Ocean). 



* *' 'Oceana' Copepoda," Ann. and Marj. Nal. Hist., vol. xii. 

 t ^Iwjai). puliunlui, bullifcr, mcgalunis. 



