H. J. HANSEN, ON SOMB ANTARCTIC MALACOSTRACA. 7 



frigida H. J. H. Unfortunately all specimens are females, while 

 adiilt males would have been easy to determine with abso- 

 lute certainty by the examination of the copulatory organs. 



Thysanoéssa gregaria G. O. Särs. 



Hansen, 1. c. p. 37. — In the first line of the localities 

 was printed December 17, instead of 27. 



111. Stomatopoda. 



Squilla brasiliensis Calm. 



1917. Squilla brasiliensis Calman, Crustacea, Part. IV : British Antarctic 

 (»Terra Nova») Expedition, 1910. Zool. Vol. III. No. 5, p. 139—141, 

 figs. 1—3. 



Lat. 33^0' S, long. 51°10' W. Coast of Uruguay. 80 m. 

 Blackish grey clay. Dec. 12, 1901. 1 specimen. 



The single specimen, a male, is rather small, measuring 

 only 41 mm. from the end of rostrum to the tip of telson. 

 It agrees well with Calman's description and figures in most 

 features, differing only in some few particulars. Anterior 

 margin of the carapace on either side of the rostral plate is a 

 little less sloping backwards than figured by Calman and 

 besides not straight but distinctly concave, especially towards 

 the rostram; on the latter the median carina is distinct in 

 more than half of the length, disappearing anteriorly and 

 posteriorly. The anterior ridge on the carpus of the rapto- 

 rial limb is without teeth, but terminates distally as a com- 

 pressed, rounded protuberance. But these differences have 

 certainly no specific value, and that the telson has the 

 marginal thickenings undeveloped is due to the small size 

 of the specimen. 



Distribution. This species was established on specimens 

 taken near Cape Frio, Brazil, 40 fathoms (Calman), and it 

 is unknown from any other region. 



Tryckt den 25 februari 1921. 

 Uppsala 1921. Almqvist & Wiksells Boktryckeri-A.-B. 



