— 2 4 - 



rather short lobe from second antennular joint has no spine. 

 Abdomen without dorsal spines. The endopod of the uropods 

 overreaches somewhat the tip of telson, but is yet shorter than 

 the exopod. — Length of the largest spécimen seen (from 

 Ingolf) 43 mm ; length of the largest spécimen in the Monaco 

 collection (from Stat. 1639) 3i mm . 



Localities. ■— Stat. 1639, 4 spécimens (3 of them less than 

 half-grown). Among material from 1903 I found a large muti- 

 lated spécimen from Stat. 1 583 : lat. 47 0 36' N., long. 7 0 38' W., 

 1490 111 . — In my future Ingolf Report several other localities 

 from the boréal area of the Atlantic will be enumerated; the 

 species has besides been captured west of Ireland (Holt & 

 Tattersall). 



Remarks. — Large spécimens of this species are clumsy; 

 half-grown or still smaller spécimens are rather slender. 

 Ortmann's figure of his T. pectinata — showing the animal 

 from the side — agrées as to antennular and rostrum better with 

 T. acutifrons than with T. pectinata itself. Ortmann says, 

 however, that the proximal antennular joint has above a broad 

 protruding leaflet « dessen vorderer Rand in ca. 10 kamm- 

 formige Dornchen auslauft », and that the front end of the cara- 

 pace is « stumpf gerundet (wie bei obtusifrons) ». Seeing that 

 my spécimens of a big species agreed on the whole well with 

 other points of his description and in ail particulars with his 

 figure, I interpreted in my former treatise the row of stiff coup- 

 ling setas as his « Dornchen », but having now seen a spécimen 

 — to be described below — possessing both a transverse row of 

 spinîform denticles and the row of coupling setae on the oblique 

 inner margin, no doubt exists as to the détermination. 



Thysanopoda distinguenda, H. J. H. 



Thfsanopoda distinguenda, H. J. Hansen, Bull. Musée 

 Océanogr., n° 3o, p. 17, fig. i3. 



Of this species I have now 24 spécimens — most of them 

 full-grown — from 1 1 stations situated in the triangular area : 

 Banc de Gorringe, the Azores and the Ganary Islands. Besides 



