H. J. HANSEN, ON SOME ANTARCTIO MALACOSTRACA. 3 



the most distal lateral spines are larger than drawn by Särs; 

 it may be noted that the difference between Särs' figure of 

 the telson and his description was already pointed out by 

 me 1. c. 



Dactylamblyops antarctica H. J. H. 



Hansen, i. c. p. 13. — A serious misprint is found in 

 the locality mentioned in ray book, as the single specimen 

 was taken at lat. 53°10' S . . . , not at lat. 63°10' S. 



Mysidopsis acuta H. J. H. 



Hansen, 1. c. p. 16. — This species was established on 

 two poorly preserved immature males, captured in Berkeley 

 Sound, Falkland Islands, 16 m. July 19 (not 7) 1902. The 

 Tierra del Fuego-Expedition has secured specimens at the 

 two following places. 



Ultima Esperanza, 7 — 10 fath. Algse, clay, stones. April 

 5, 1896. 1 male, 1 female; both adult. 



Hope Harbour. 6 — 10 fath. Rocks with algse. April 30, 

 1896. 1 subadult female. 



The ovigerous female is 11,3 mm., the adult male only 

 9 mm. long. All specimens agree well with my earlier de- 

 scription and figures, excepting that in the somewhat mutil- 

 ated male (with the eyes broken off) the pleopods are 

 fully developed. 



Mysidetes posthon Holt & Tattersall. 



Hansen, 1. c. p. 17. — In "Die Schizopoden der Deut- 

 schen Siidpolar-Exped." (1914) C. Zimmer deals with a very 

 large material of Mysidetes. All animals were taken at the 

 wintering station of that expedition: lat. 66°2' S., long. 

 89°38' E., and he refers them to four species (three of which 

 are new), viz. 31. posthon Holt & Tätt., M. similis Zimm., 

 M. Hanseni Zimm., and M. Illigi Zimm. Both of M. posthon 

 and 31. similis the author had a large number of specimens, 

 and at M. similis he says (p. 403): "Nach der Zeichnung bei 



