EUDACTYLINA MINUTA. 135 



ing short, moderately stout apical spines, with two 

 setge on the outer margin. Length a little over 1 mm. 

 Egg-strings short, bearing a small number of mode- 

 rately large ova. Colour reddish, resembling the colour 

 of the gills of the fish. 



No males observed. 



Habitat. Parasitic on the gills of a sting ray, 

 Trygon pastinaca Linn., captured in the Dornoch 

 Firth in October 1903 (T. Scott). The fish was sent to 

 Dr. Fulton, Scientific Superintendent, Fishery Board 

 for Scotland, who kindly placed it at our disposal. 



5. Eudactylina insolens T. and A. Scott. 

 (Plate LXXI, figs. 1-12.) 



Female. Length exclusive of the furcal setse 1*8 

 mm. Body moderately robust and cylindrical, and 

 having no appearance of segmentation between the 

 third and fourth free thoracic segments as is usual in 

 the members of the genus. The cephalic segment, 

 seen from above, comparatively large and somewhat 

 quadrangular in outline. Frontal margin broadly 

 rounded and terminating on each side in a distinct 

 knob-like projection. Lateral margins for some dis- 

 tance behind the knob nearly straight. First thoracic 

 segment deeply constricted a little behind the middle. 

 Second segment decidedly larger than the first, and its 

 lateral margins somewhat inflated. Third segment 

 large and cylindrical, tapering slightly towards the 

 posterior end. Abdomen very short and three-jointed, 

 rather less than one-seventh of the length of the entire 

 animal. Genital segment comparatively large and 

 swollen, and equal to the combined length of the 

 second and third segments together with the furcal 

 joints. Second and third segments short and of nearly 

 equal length. Furcal joints short and about as long as 

 the last abdominal segment, their length equal to twice 

 the width. Each furcal joint furnished with one 

 marginal and four apical setae, which are very small. 



