NORTH ATLANTIC SEA AND THE FAROE CHANNEL. 123 



length of the foot, and this foot is very clearly three-segmented (in 

 ^'Eg. mif.cro)i. one-segmented). 



On these grounds I hesitate to regard it as identical with Gies- 

 brecht's species. One specimen was taken in the l\iroe Channel 

 (Fowler's Collection), and a second was captured in lat. 50° 56' at 300 

 fathoms in June, 1903. Giesbrecht's species was a Pacific Ocean one. 

 The JEff. mucronatus recorded from eight stations of the Oceana given 

 by J. C. Thompson is probably identical with my species. 



26«. Parangaptilus Buchani {nov. gen. et s}).). 2 3'25 mm. long 

 (cephalothorax 2*55, abdomen 0'7). The head very much narrowed in 

 front and general shape like an Augaptilus; two slender rostral filaments 

 very divergent; the abdomen of four distinct segments, the genital 

 very protuberant ventrally and twice as long as the next, which with 

 the middle and anal segment are each of the same size (PL IX., fig. 44) ; 

 the furcal segments not quite twice as long as broad, each with four tail 

 setoe (the longest about as long as the abdomen) and a short dorsal 

 accessory bristle; the last thoracic segment on each side dorsally ends in 

 a short stumpy spine ; anterior antennie of twenty-one joints, the first 

 and second comparatively long, the next nine very short and compressed, 

 the eleventh partly divided from the twelfth, the twentieth from the 

 twenty-first; the left antenna is a little longer than the right, neither 

 of them as long as the whole body ; the posterior antenna has the 

 cndopodite about twice as long as the exopodite ; the mandible is one- 

 branched only, the masticatory plate like Arietcllus ; the maxilla has 

 the inner lobes much reduced, the second basal and endopodite fused 

 with only three distal bristles, the first inner lobes with five, and 

 exopodite short with two bristles ; the anterior foot-jaw is very like 

 that of AricteUus divided into three segments, the first two with small 

 lobes and short bristles, the endopodite short and with very long 

 bristles (eight) provided with augaptiloid cups ; posterior foot-jaws with 

 the endopodite as long as the second basal, its segments, five in number, 

 progressively diminishing in size, the first two large ; many of its 

 bristles have the augaptiloid cups ; the first four pairs of feet have 

 endopodites and exopodites of three segments each; the fifth feet are 

 peculiar, consisting only of a foliaceous plate on each side, imperfectly 

 segmented into two, and carrying each one long marginal and a longer 

 apical bristle. (PI. IX., fig. 45.) 



The animal is an adult with well-formed genital segment ; the four- 

 jointed abdomen removes it from the genus AiKjaiyiilns ; the shape is 

 augaptiloid and not like ArktcUus, and the fifth feet are quite peculiar. 

 It seems to partake of some of the characters of each of these genera, 

 but cannot, I think, be referred to either; I attach to it the name of 



