CRUSTACEA MALACOSTRACA. IV. 4 1 



peduncle about as long as the two posterior abdominal segments and half of fourth segment combined, slight- 

 ly more than twice as long as the endopod, with most of the outer margin extremely finely serrated, while 

 the inner margin has about 12 robust setse increasing in length from the first to the last; endopod with 10 

 spines on the inner and 2 on the terminal margin; exopod a good deal shorter than the endopod. 



Length 7.5 mm. 



Remarks. C. laticarpa is separated especially by having the carpus of third maxillipeds longer and 

 very much broader than in any other northern species of Campylaspis ; the size and shape of merus and carpus 

 can easily be seen without dissection, and the absence of marginal teeth in this pair of appendages is, besides, 

 a good specific character. On the colour little can be said; the animals are now whitish, often with numerous 

 extremely small, dark-brown dots ; in some specimens larger and partlv confluent brownish red dots are found 

 on the peduncles of the uropods. 



Occurrence. Not taken by the "Ingolf" but by the "Thor" in May 1904 at two places. 



South- West of the Faeroes: Lat. 6i°i5' N., Long. 9*35' W., 463—515 fath. ; 38 specimens, ? and $. 

 — — Lat. 6i°07' N., Long. o.°3o' W., 443 fath.; 2 specimens. 



34. Campylaspis undata G. O. Sars. 

 (PL III, fig. 4 a). 



1865. Campylaspis undata G. O. Sars, Forh. Vidensk. Selsk. Christiania for 1864, p. 205. 

 !iqoo. — G. O. Sars, Account, III, p. 88, PI. LXI. 



1913. — — Stebbing, Das Tierreich, 39. Lief. p. 195. 



A comparison between my female specimens and Sars' representation gave the following results. 

 The carapace agrees with his figure excepting that the pseudorostrum seen from the side looks a little more 

 produced and has its front margin distinctly as a whole more oblique ; between the upper longitudinal ridge 

 and the lower one there is anteriorly nearly below the large sublateral protuberance a more or less conspicuous, 

 very rounded, subvertical ridge not figured by Sars in the female C . undata, but in the male, and besides in 

 C. horrida and C. verrucosa; furthermore there is sometimes a feeble and short piece of longitudinal keel 

 rather far behind between the two very long lateral keels. In second pair of maxillipeds the distal inner 

 corner of the carpus is somewhat produced in a triangular tooth; the propodus has near the end of the inner 

 margin a very conspicuous, oblong tooth, thus the two teeth mentioned are considerably more developed 

 than in Sars' fig. mp-, but there is complete agreement between his figure and the maxilliped examined by 

 me in the spines on the dactylus and the terminal spine on the propodus. Third pair of maxillipeds (fig. 4 a) 

 differ in some particulars from Sars' fig. nip 3 ; the ischium has 2 teeth (not a single tooth) on the inner end ; 

 merus differs considerably in shape, as in my specimens the inner margin is distinctly concave, the outer 

 margin feebly angular near the middle and sooner convex than concave, while in Sars' figure both margins 

 are curved in the way opposite, but I think that this figure is incorrect; as to marginal serration the differ- 

 ences between Sars' figure and the features observed by me are of no importance (in maxillipeds of three 

 specimens I found also a little variation as to marginal teeth). First pair of legs differ only from Sars in having 



The Ingolf-Expedition. III. 6. o 



