1134 THE VOYAGE OF H.M.S. CHALLENGE!;. 



Mandibles. — The cutting edge is divided into five teeth ; the secondary plate on the 

 left mandible has four teeth, on the right mandible two moderately conspicuous teeth 

 and three very inconspicuous denticles ; the spine-row has five spines on the left, and four 

 on the right mandible ; the molar tubercle on each mandible has a very irregular edge to 

 the crown, and in a cavity of this edge is planted a small lamina, narrow at the base, 

 distally crenulate, with a breadth about equal to the length. 



It is probably to this which Boeck alludes when he says, 1 " Tyggeknuden er meget 

 hoi, og den nedre Tandrad afbrydes i den indre Kant af en Bdrste," but to speak of this 

 laminar process as a seta seems inappropriate and misleading. 



Lower Lip. — Principal lobes rather widely dehiscent, inner margins strongly ciliated, 

 the outer margins with a small interruption as if an incipient jointing near the apex ; 

 the oval inner lobes filling up a portion of the gap between the other two, the inner and 

 distal margins well ciliated ; the mandibular processes rather long, narrow, and divergent. 



First Maxillae. — The inner plate narrow ; the outer plate carrying on the broad 

 distal margin nine spines, each of which appears to have a small lateral tooth on the 

 outer or on the inner margin ; in some of the spines there may be more than one such 

 tooth on the inner margin ; the first joint of the palp very short, the second very long, 

 carrying on the dentate apex four serrate spine-teeth, with two that are narrower on the 

 inner margin just below the apex ; there are also several slender spines crossing the 

 surface from the outer apex to the inner margin. Boeck in describing the outer plate of 

 these maxillae says there are six strong spines, each of which is armed on the concave 

 edge, near the apex, with a little accessory tooth. In Podocerus latipes he also mentions 

 only six spines, but that is probably in both species rather the number he observed than 

 the full normal number. 



Second Maxilla?. — The inner plate rather shorter and narrower than the inner, with 

 plumose setae or setiform spines descending to the middle of the inner margin. 



Maxillipeds. — The inner plates have on the widened distal margin some curved 

 plumose spines and three small spine-teeth which are not set close together ; a row of 

 seven plumose setas, beginning rather far up the inner margin, passes across towards the 

 distal margin ; the outer plates do not reach to the apex of the second joint of the palp ; 

 the crenulate inner margin has seven graduated serrate spine-teeth ; on the apical margin 

 the series is continued by three that are similar but longer and by two long setae. 



Second Gnathopods. — The inner margin of the finger is not denticulate, but carries a 

 series of small not very prominent spine-teeth. 



Locality. — A specimen that appears to be a female of this species w r as taken from 

 the screw of the ship on the 18th of December 1873. This date corresponds with 

 Station 142, in the neighbourhood of the Cape of Good Hope, lat. 35° 4' S., long. 

 18° 37' E. 



1 De Skand. og Arkt. Ainpli., p. 607. 



