_3HS 



PaiM" 94. 

 l,li/,r i/i-iH-ili*. Scott. 



l)i->ti-il>nti',ii. Polar Mauds north of (irinnell Land (2nd Frani Kxp.l. 



Page 96. 



Iili/nit /iniinirrliini. (-J. ( ). Sal's. 



I tist, ifnitiii)). Polar island north of (-Jrinnell Land (2nd Krain K.xp.). 



Page 97. 

 Add the following species: 



Idyaea tenella, G. 0. Sars, n. sp. 



(Suppl. PI. loi. 



S/imfir Characters. Female. Body very slender, though, as in the other 



ol' this genus, having the anterior division somewhat expanded and much 

 broader than the posterior. Cephalic segment about the length of the 3 succeed- 

 ing segments combined, and produced in front to a rather small rostral prominence. 

 Lateral parts of the 3 succeeding segments somewhat expanded and separated 

 li\ narrow incisions. Last pedigerous segment considerably narrower than the 

 preceding ones, and obtusely produced on each side. Urosome very slender and 

 elongated, < -M -ceiling -/ 3 ol the length of the anterior division, genital segment 

 imperfectly subdivided in the middle, last segment very small. Caudal rami short 

 and closely juxtaposed, being scarcely more than half as long as they are broad, 

 apical s,-t;e of rather peculiar appearance, the 2 middle ones having their 

 proximal part remarkably dilated, the inner one attaining about half the length 

 of the body. Anterior antenna- not very slender, scarcely attaining the length 

 of the .-ephalic segment, and, as usual, composed of 8 articulations, 3rd joint t In- 

 largest, 4th joint comparatively short, terminal part about half the length of those 

 joint- combined. Posterior antenna- and oral parts exhibiting on the whole the 

 -tructiire characteristic of the genus. M pair of legs with the outer ramus ex- 

 ten. ling a little be\Miid the 1st joint of the inner. 2nd joint of the latter ramus 

 rci-]\ hmger than the 1st. and not much attenuated. The 3 succeeding pairs 

 of h'L's pouerfiilly developed, with the rami rather broad, the outer one being 

 the longer. Last pair of legs with the distal joint lamclliform and broadly o\al 

 in outline. 



Colour not \et ascertained. 



LeiiL'th of adult female 0.09 mm 



