CRUSTACEA MALACOSTRACA. IV. 4/ 



and the major proximal part of the outer margin finely serrated; endopod with 3 spines on the serrated 

 inner margin, one long and one short apical spine. 



Length 5.6 mm. 



Remarks. This species is intermediate between C. verrucosa G. O. S. and C. jrigida H. J. H., 

 though nearer to the latter form, which was collected by the "Belgica" at Lat. 70°48' S., Long. qi°54' W. 

 The curious expansion of the merus is still more developed in C.frigida, in which that joint is as broad as long; 

 as to the shape of merus C. globosa is intermediate between C. verrucosa and C. jrigida, and the relationship 

 between these three species from most different localities has been mentioned above on p. 36. 



Occurrence. Taken by the "Ingolf" at a very deep station in the warm area. 



Davis Strait: Stat. 36: Lat. 6i°5o' N., Long. 56°2i' W., 14.55 fath., temp, r.5 ; 1 adult female. 



40. Campylaspis serratipes n. sp. 



(PI. IV, figs. 2 a— 2 h). 



Subadult Female (and immature Male). Carapace seen from above (fig. 2 a) nearly regularly 

 oblong-oval, excepting at the front end which is cut off transversely, and it is considerably less than twice as 

 long as broad; seen from the side (fig. 2 b) the carapace is highly vaulted, very deep, with the pseudorostrum 

 included considerably less than twice as long as deep, about as deep as broad. Pseudorostrum short and a 

 little upturned; the antennal notch moderately or somewhat feebly developed, and the upper part of the 

 oblique margin below the notch with some saw-teeth. The ocular lobe broader than long, nearly half as long 

 as pseudorostrum. The dorsal side of the carapace with a pair of longitudinal rows of tubercles; the rows 

 are posteriorly nearer the median line than anteriorly, and each row consists of 5 or 4 rather small, more or less 

 conical or rounded tubercles ; behind the pseudorostrum a broad but proportionately somewhat low tubercle 

 is placed more laterally; finally the upper part of each side has one just discernible small tubercle and some- 

 times a vestige of a second or even a third tubercle. The dorsal part of the two anterior free segments frequent- 

 ly completelv concealed by the carapace, when visible it is observed, that each segment has a high transverse 

 keel, which is not really lamellar. Abdomen as usual conspicuously shorter than the carapace; the segments 

 without dorsal tubercles. 



Second pair of maxillipeds (figs. 2c and 2 d) peculiarly armed; carpus with an extremely long, spini- 

 form process on the distal inner angle and before it an acute tooth; propodus with an uncommonly long, 

 spiniform process on the inner margin before the end, and the outer terminal spine is rather long; dactylus 

 with 4 spines, the first long, about as long as the third and considerably longer than the second, while the 

 fourth is only about half as long as and much thinner than the third. Third pair of maxillipeds (fig. 2 e) with 

 second joint uncommonly short, much shorter than the five following joints combined; ischium with two 

 teeth on the inner margin; merus normally shaped, somewhat less than twice as long as broad, with two 

 strong teeth on the inner margin and some three teeth on the outer ; carpus oblong and scarcely longer than 

 the breadth of merus, with three strong teeth on the inner and four on the outer margin ; propodus rather long, 

 with three very strong teeth on the proximal part of the inner margin and a smaller tooth on the outer mar- 



