DR WILLEY FROM THE SOUTH SEAS. 403 



Genus. Lysiosquilla Dana, 1852. 

 6. Lysiosquilla bimimensis Bigelow, 1893, var. pacificus uov. 



Lysiosquilla himinieTisis Bigelow, Job. Hop. Univ. Circ. c\'l., p. 102 (1893); Proc. 

 U. S. Nat. Mus. XVII. p. 504, Figs. 4—7 (1895). 



A single male specimen from New Britain seems to belong to a variety of this 

 species. The resemblance to Bigelow's figures and description is complete save in the 

 following small points : — 



1. The movable submedian spines of the telson are stouter than in Bigelow's 

 figure, while the innermost pair of submedian spinules are minute. 



2. The outer spine oa the basal prolongation of the uropod is slightly longer 

 than it is figured for the type. 



3. The antennal scales are somewhat smaller. 



■4. In addition to the markings shown by Bigelow there is a narrow band of 

 deep black (in spirit) on the hinder edge of each segment from the sixth thoracic to 

 the fifth abdominal inclusive. 



These differences do not seem sufficient to justify the separation of the form in 

 question from the West Indian species, and it is accordingly proposed to call it var. 

 pacificus, emphasizing thereby its interesting distribution. L. bimimensis is the only 

 species in the collection already known and not recorded from the Indopacific region, 

 and forms one of the list already given to illustrate the coincidences between the 

 Macruran and Stomatopodan fauna of the West Indies and that of the South Sea 

 Islands visited by Dr Willey. 



Genus. Squilla Fabr., 1793. 



7. Squilla multituberculata Borradaile, 1898. 



Squilla multituberculata, Borradaile, P. Z. S. 1898 p. 38, PI. VI. Fig. 7, 7a — 7c. 



The short diagnosis accompanying the figures of this species in the above-mentioned 

 paper may be here amplified with certain further details. 



The rostrum is sub-rectangular, somewhat narrower behind than before, without 

 carinae, and with the antero-lateral angles produced, bent downwards, and acute. 



The eyes are elongate and flattened from above downwards, and their cornea 

 consists of two roughly hemispherical portions set side by side on the end of the stalk. 



The carapace is small, narrower before than behind, with rounded angles and the 

 hinder border somewhat concave. The sides of the fifth thoracic segment are sharp, 

 those of the sixth to eighth subtruncate. 



The antennae have long stalks, and the last joint of the scale of the second pair 

 is small. 



In the great claw the last joint is stout, bearing on the inside four teeth (in- 

 cluding the terminal tooth), and on the outside three short teeth at the base. 



The tail fin. The sixth abdominal segment bears eight roughly longitudinal ridges 

 and a few scattered knobs. It has two small blunt processes on the hinder edge, and 



