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The specimens included under this species, so far as can be made out from the fe 

 figures given by Giesbrecht, appear to agree fairly well with Chiridius poppci. The cephalo- 

 thorax vievved from above, is moderately robust and oblong ovate in form. The anterior margin 

 is slio-htly contracted and a little produced in the middle. The spines of the last thoracic segment 

 project slightlv beyond the middle of the genital segment. The combined length of the abdomen 

 and furca, is almost equal to one-third of the total length of the cep halothorax, from the frontal 

 margin to the base of the genital segment. The genital segment is rather longer than the 

 second segment. The second segment is nearly as long as the third and fourth together. The 

 anal segment is about half the length of the third segment. The furcal joints are slightly longer 

 than the anal segment, and are a little longer than broad. The terminal spine of the exopodite 

 of the fourth pair of feet has twenty-six teeth. 



Length of the female, 1,8 mm. 



Occurrence — six specimens were found in plankton collected at the following stations. 



Stat. 128, HENSEN vertical net, 700 metres to surface, 1 specimen. 



Stat. 141, HENSEN vertical net, 1 500 metres to surface, 1 specimen. 



Stat. 142, 1 specimen. 



Stat. 148, HENSEN vertical net, IOOO metres to surface, 1 specimen. 



Stat. 185, HENSEN vertical net, 1536 metres to surface, 1 specimen. 



Stat. 276, HENSEN vertical net, 750 metres to surface, 1 specimen. 



2. Chiridius ? gracilis Farran. Plate XI, figs. 1 — 9. 



Clüridius poppci Farran, 1905, p. 35. 



Chiridius gracilis Farran, 1908, p. 30, pi. II, figs. 1 — 3. 



The specimens of this form are only doubtfully regarded as Farran's species. They are 

 less robust than those recorded as Chiridius poppci, and the abdomen is not so slender as in 

 Farran's Chiridius gracilis. 



Female — length 2,4 mm. 



Viewed dorsally, the cephalothorax appears less robust than in the previous species, 

 and although considerably contracted, the frontal margin of the forehead is quite rounded. 

 The spines of the last thoracic segment are produced distinctly beyond the middle of the 

 genital segment. The combined length of the abdomen and furca, slightly exceeds one-third 

 of the total length of the cephalothorax, from the frontal margin to the base of the genital 

 segment. The second segment is very slightly longer than the third segment. The anal segment 

 is equal to fully half of the length of the third segment. The furcal joints are about as long 

 as broad, and are scarcely as long as the anal segment. The terminal spine of the exopodite 

 of the fourth pair of feet has twenty-two teeth. 



Occurrence - - four specimens were found at the following stations. 



Stat. 141, HEXSEN vertical net, 1500 metres to surface, 1 specimen. 

 Stat. 142, 1 specimen. 



Stat. 143, HENSEN vertical net, 1000 metres to surface, 1 specimen. 

 Stat. 148, HENSEN vertical net, IOOO metres to surface, 1 specimen. 



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