42 
The specimens included under this species, so far as can be made out from the few 
figures given by GIESBRECHT, appear to agree fairly well with Chzrzdius popper. The cephalo- 
thorax viewed from above, is moderately robust and oblong ovate in form. The anterior margin 
is slightly contracted and a little produced in the middle. The spines of the last thoracic segment 
project slightly 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 cephalothorax, 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, I specimen. 
Stat. 141, HENSEN vertical net, 1500 metres to surface, I specimen. 
Stat. 142, I specimen. 
Stat. 148, HENSEN vertical net, 1000 metres to surface, I specimen. 
Stat. 185, HENSEN vertical net, 1536 metres to surface, I specimen. 
Stat. 276, HENSEN vertical net, 750 metres to surface, I specimen. 
2. Chiridius ? gracilis Farran. Plate XI, figs. 1—9. 
Chiridius poppet Farran, 1905, p. 35. 
Chiridius gracilis Farran, 1908, p. 30, pl. Il, 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 poppet, and the abdomen is not so slender as in 
Farran’s Chiredius gracile. 
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, HENSEN vertical net, 1500 metres to surface, I specimen. 
Stat. 142, I specimen. 
Stat. 143, HENSEN vertical net, 1000 metres to surface, I specimen. 
Stat. 148, HENSEN vertical net, 1000 metres to surface, I specimen. 
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