8 
A. 0. WALKER. 
widening near the middle; fifth joint half as long again and half as wide as the fourth, 
its front margin finely serrate. Dactyli as in preceding pairs. 
Fourth and fifth perseopods: First joint narrower than in the third pair, and 
the front margin of the fifth smooth. The fourth pair are subequal to the third and 
about one-fifth longer than the fifth. Dactyli as in preceding pairs. 
First uropods reaching to the end of the third, second a little shorter. 
Third uropods : Peduncles broad, one-third longer than the rami, which are sub¬ 
equal, wide at the base, and acutely pointed ; the outer edge of the outer ramus smooth 
the rest unequally serrate. 
Tel son equilaterally triangular, barely reaching the middle of the peduncle of the 
third uropods. 
This species in the length of the perseopods and the relative proportions of the 
last three pairs approaches Parathemisto, with which it also agrees in the mouth-organs, 
but the widely expanded and produced wrist of the first gnathopods does not agree with 
either G. 0. Bars’ or Bovallius’s* definition of that genus. 
Length 10mm. 
Hyperoche luetkenides. 
(Plate 1, fig. 2.) 
lf0f(oM.3S 
Hyperoclie lutkenides , A. 0. Walker, Ann. and Mag. Nat. Hist. XVII. (1906), p. 453. 
Lat. 57° 25' 30" S., long. 151° 43' E. ; one male, length 12 mm. 
Like Hyperoche liitkeni, Bovallius,! except in the following respects :—In the 
second pair of perseopods (fourth pair of Bovallius) the hind margins of the fourth and 
fifth joints are not serrate. In the third pair the fifth joint is curved. 
The telson is triangular, with, rounded apex, rather longer than the width at the base, 
and reach ing to the m iddle of the peduncles of the thud uropods. 
The mandibular palp has the third joint almost as long as the first and second 
united as figured by Bovallius for II. liitkeni. In this respect both species differ from 
G. 0. Bars’ figure of II. kroyeri, Bov. [77. tauriformis (Bp. Bate and Westwood!)], in 
which the third joint is shorter than the second.§ 
In the first pair of perseopods the hind margin of the fourth joint is prolonged in 
the form of a strong serrate tooth ; in the second pair the tooth is smaller and not 
serrate, but the curved portion of the end of the joint between the tooth and the base 
of the fifth joint is so. 
Hyperiella dilatata. 
Hyperiella dilatata, Stebbing. 
Young specimens, abundant at W.Q. from Nov. to July, length 8-9mm. 
* Bovallius, Ampliipoda Hyperiidea, Part 2 (1889), p. 129. 
t Bovallius, Ampliipoda Hyperiidea, Part 2 (1889), p. 97, PI. VII. 
1 British Sessile-eyed Crustacea, Vol. 2, App., p. 519. 
§ Mr. W. M. Tattersall, who has kindly examined specimens of II. tauriformis from the W. of Ireland for 
me, informs me that the palp in the male resembles Bovallius’s figure of H. liitkeni, while that of the female 
agrees with Sars’ figure. 
