205 



of body obtusely rounded behind, and without the slightest trace of a 

 segmentation dorsally, whereas ventrally well-marked chitinous stripes are 

 seen, running transversally between the insertions of the legs. Tail scarcely 

 exceeding half the length of the anterior division and partly overlapped in 

 front by the trunk; genital segment rather dilated in its anterior part, 

 being almost twice as broad as it is long; the succeeding segments gradu- 

 ally attenuated; anal segment comparatively small and deeply incised behind 

 in the middle. Caudal rami scarcely longer than the anal segment and 

 somewhat divergent; seta of outer edge attached near the end; apical setae 

 rather unequal, the inner mediate one being the longest and somewhat 

 exceeding half the length of the tail; innermost seta very small. Eye 

 quite absent. Anterior antennae about the length of the cephalic part of the 

 body, and composed of 7 well-defined joints clothed anteriorly with com- 

 paratively short setae; 1st joint rather broad; 2nd joint much the largest, car- 

 rying behind at the base a group of 4 short bristles and at the end a long 

 densely ciliated seta; the remaining joints rapidly diminishing in size. Posterior 

 antennae rather strongly built, last joint of a somewhat irregular form, and 

 provided at the end, in addition to the 2 peculiar cup-shaped claws, with 4 

 rather strong and partly ciliated setae. Sucking disk very large and conspicu- 

 ous, with densely crowded radiating fibres, and finely ciliated at the edge. 

 The 2 anterior pairs of legs with the outer ramus 3-articulate and longer than 

 the inner, which only consists of 2 joints. 3rd pair of legs considerably smaller 

 and without any inner ramus, outer ramus biarticulate. Ovisacs slender, cylin- 

 drical in form, each containing a rather limited number of ova arranged in a 

 single series. 



Male of rather smaller size than female, and having the trunkal part 

 of the body somewhat less broad behind. Tail comparatively more slender, 

 with the genital segment widening behind and terminating on each side in 

 an obtuse projection. Both pairs of antennae exactly as in the female. Sucking 

 disk however quite wanting. Posterior maxillipeds very powerfully developed; 

 basal joint short with a strongly denticulated process inside; propodos much 

 dilated, with the palmar edge bulging at the base and densely clothed with 

 small spikes; dactylus strong and curved. 



Colour not yet ascertained. 



Length of adult female 0.90 mm., of male 0.65 mm. 



Remarks. This form was first recorded by Kurz in the above-quoted 

 Journal, and was several years afterwards described by Scott under another 

 name, viz., Eiirynotus insolens, the paper of Kurz being at that time unknown 



27. Crustacea 



