NORTH ATLANTIC SEA AXP THE FARoE CHANNEL. 125 



and paired at the basal joints. The fifth feet have each a two-jointed 

 basopodite and three-jointed exopodite ; the foot of the right side has 

 a rudimentary endopodite, broad and without spines. The second 

 exopodite segment carries two distal hooks ; the foot of the other side 

 has a much simpler exopodite, the last joint long and broad distally, 

 without spines. The second basopodite of each side has a long, thin, 

 feathered bristle. (PI. IX., fig. 16.) The FJ/i/Uojn'S Udentatiis, figured 

 by I. C. Thompson,* is certainly not identical with my species, if the 

 former is correctly drawn. My Atlantic specimens are, I think, without 

 a doubt the 3 of the species described by Giesbrecht ; and the females 

 captured at the same time by me agree entirely with the description 

 and figures of the last-named authority, and not with Brady's. The 

 "bidentate process" does not exist in the Atlantic specimens, and as 

 I have minutely examined quite a dozen, it is not likely that it has 

 been broken off in all of them, 



29. Ctenoccdanufi Tenuis <? (nov.). On two occasions, once in the 

 Faroe Channel and once in the Atlantic, off the west coast of Ireland, 

 this Copepod has been taken, the 9 only (described by Giesbrecht) of 

 which is known. 



The S is 1"25 mm. long; the anterior antennae of twenty-one joints, 

 the posterior antennte, with the exopodite, nearly twice as long as 

 the endopodite ; the exopodite of the mandible longer than the endo- 

 podite, a chitinous remnant of a masticatory plate remaining, but 

 without teeth ; anterior foot-jaws retrograded, posterior foot-jaws with 

 the two basal joints of about the same length, the endopodite longer 

 than either ; first feet with a one-jointed endopodite, second pair with 

 a two-jointed endopodite, the marginal spines especially of the fourth 

 pair modified, as Giesbrecht has described as characteristic of the 

 species, having peculiarly crenated edges ; fifth feet, one long (left) 

 foot of five segments, basal two joints largest and broadest, the distal 

 three joints small, the end one spatulate with bundles of short, stiff 

 bristles on the inner margin ; the right side carries a very short stump 

 only, representing the foot. (PI. IX., fig. 9.) 



30. Miiridia Normani j (/loi:). The S only of this spAcies has 

 been described by Giesbrecht; the $ has hitherto remained unknown. 

 It is of common occurrence in the Atlantic, west of Ireland. 



Length of the 2 2-5 mm. ; anterior antennas of twenty-five joints, 

 a little longer than the whole body, the first, second, and third with 

 prominent but not recurved spines on the upper margin, tliat of the 

 third segment the longest, the fifth and sixth segments witli shorter 

 spines; both second feet with the usual notch and hook; fifth pair 



* A7in. and Mag. iXat. Hist., vol. xii. I'l. IH. 



