38 CRUSTACEA MALACOSTRACA. III. 



is produced into a moderately small, oblong-triangular, acute process directed backwards and mainly 

 outwards; the hind margin of each pleopod somewhat sinuate, in the main vertical on the median line. 



Remarks. Sars in 1882 and in the "Account" says that a number of Kroyer's figures of his 

 M. Fabricii belong to M. Fabricii Kr., G. O. Sars, and others to M. Kroyeri Goods., Sars. This statement 

 led me astray in my list of the Malacostraca from West Greenland (1887), and in following Sars I 

 made erroneous statements. Having now, assisted by "Account" and a rich material, studied the whole 

 matter and examined again the specimens from Greenland determined by Kroyer, I have arrived at the 

 result that some of these specimens belong to M. Fabricii Kr. but not M. Fabricii G. O. S. which in 

 1910 I gave the new name M. minuta, furthermore that the other specimens of Kroyer do not belong 

 to M. Kroyeri Goods., Sars, but to M. groenlandica n. sp. (see above). The statements on the species 

 of Munna in my list from 1887 and most of those in Stephensen's "Conspectus" ought in future to 

 be left out of consideration. 



Occurrence. Not taken by the "Ingolf". 



Among the whole material of Munna from our area, I found only a single male, taken by 

 cand. mag. Ssemundsen at Vestman-0erne, south of Iceland, in the littoral belt. 



Distribution. At the south and west coast of Norway, in comparatively shallow water (G. O. 

 Sars); not known from Denmark, but a specimen has been recorded from the bay at Kiel (Apstein). 

 Furthermore taken at a good number of places at Scotland, England and Ireland (several authors), 

 besides at Jersey (teste Norman). Tattersall has recorded it as taken in 115 rath, west of Ireland. 

 But I am inclined to think that several of the localities recorded ought to be referred to M. Fabricii 

 Kr. When T. Scott recorded M. Kroyeri from Northbrook Island, Franz-Joseph Land, I am tolerably 

 sure that his specimens belong to M. Fabricii Kr. 



21. Munna Fabricii Kroyer (nee G. O. Sars). 



(PI. Ill, figs. 5 a 5 d.) 

 71846. Munna Fabricii Kroyer, in Gaimard, Voy. en Scand., Crust. PI. XXXI, fig. i, a q (partim). 



1847. Kroyer, Nat. Tidsskr., Ny Raekke, Vol. II, p. 380 (partiml. 



! 1910. H. J. Hansen, Vid. Meddel. Naturh. Foren. Kjebenhavn for 1909, p. 211; PI. Ill, 



figs, i a i e. 



The description and figures in my paper quoted may be sufficient for the recognition of this 

 species. It is instantly separated from all northern forms by the regularly oval, not pyriform or ovate, 

 shape of the abdomen, which, besides, has no lateral processes as in M. Kroyeri, and at most a single 

 sublateral spine. The uropods are very thick and distally curved and produced into a strong, acute 

 process directed backwards; seen from below (fig. 5 a) a strong, oblong process projects beyond the 

 oblique terminal margin, and seen from above (fig. 5 b) the end of that process is perceived close by a 

 slender process from the end of the upper wall. The median lamella of the male operculum (figs. 

 50 5d) is a little more than three times as long as broad, without ventral spines; in outline it is 

 somewhat similar to that of M. Boeckii, excepting its most distal part, which is less widened and quite 

 differently shaped; the outer distal angle of each pleopod is produced into a long, slender, acute pro- 

 cess directed backwards and somewhat outwards, and the hind margin of the pleopod is somewhat convex. 



