60 G. o. SARS. [No. 8, 



with a conspicuous blue transverse band beyond the middle; 

 that of male lighter, right anterior antenna and furcal lobes 

 partly tinged with red. Length of adult female 1,80 mm, 

 of male 1,55 mm. 



Remarks. — This form, I believe, is identical with the 

 Ceylon species described, though very insufficiently, by Brady 

 under the above name. It is rather well defined from all the 

 northern species with which I am acquainted. Whether any of 

 the forms mentioned by King from Australia should be regarded 

 as synonymous or not, I am unable to say, having unfortunately 

 not had an opportunity to confer with that Volume of the 

 Papers and Proceedings of the Eoy. Soc. of Van Diemena 



Description of the female. — The length of the body in 

 adult ovigerous specimens scarcely exceeds 1,80 mm, and hence 

 this species is somewhat smaller than the wellknown European 

 form, D. castor (Jurine), or about of the size of D. denticornis r 

 Wierzejski (D. hamatus Lilljeb). 



The general habitus (see PI. VII, figs 12, 13) on the whole 

 rather reminds of that of the last named species, The anterior 

 division of the body (cephalothorax) is comparatively broad, the 

 greatest width rather exceeding the third part of the length, and, 

 as usual, is composed of 7 segments, the anterior and posterior 

 of which, however, are less distinctly defined. Seen from above 

 (fig. 12) this division exhibits a narrow oblong form and taper* 

 rather more anteriorly than posteriorly, the front being narrowly 

 rounded, whereas the posterior extremity is broadly subtruncate, 

 with a deep median emargination. To either side of the latter, 

 the posterior segment forms a broad, lamellar lobe, somewhat 

 projecting laterally and exhibiting two corners, the outer o 

 which juts out as a pointed process, whereas the inner is obtuse- 

 Seen laterally (fig. 13) the dorsal part of this division appe^ 

 rather vaulted, whereas the ventral is more flattened. Tbe 

 greatest height, being about in the middle, exactly equals the 

 width as seen from above, and the anterior extremity app« arS 

 narrower than the posterior. The front somewhat curves down- 



