490 Dr. Henry Woodivard — Cretaceous Crustacea, Denmark. 



surface being slightly concave show its relationship to Galathea, 

 and on the other hand the non-serrated ridges and the two teeth 

 situated at the base on either side are found in the Munida-tj^e, 

 which is represented by Munida primceva, n.sp. 



Several existing species are known which, as regards the formation 

 of the rostrum, are transitional forms between Galathea and Munida, 

 which, however, have been arranged as separate genera. Such are 

 the Pleuroncodes of Stimpson and the Grimothea of Dana. In both 

 these genera one finds a small, triangular, non- serrated rostrum, 

 provided with teeth on each side at the base. 



Pleuroncodes ^ differs, however, both from Galathea and Munida, 

 amongst other peculiarities, in its breadth. Recent authors ^ consider 

 Grimothea to belong to the genus Munida. Of the living species of 

 Galathea, G. pusilla, Henderson,^ is nearest to G. munidoides ; but 

 its rostrum is provided with a small tooth on each side in front. 



Munida prim^va, K. 0. Segerberg. 



K. 0. Segerberg: Gaol. Foren. I Stockholm ForliaEdl., 1900, Ed. xxii, H. 5, p. 8, 



pi. i, fig. 6. 



Only one specimen of this species has been found from Faxe, 

 preserved as a cast; still, the shell can be partially seen at the 

 sides, but the rostrum and lateral teeth are broken. The greatest 

 breadth at the centre of the carapace is 5 mm. ; the length from the 

 base of the rostrum to the posterior margin is 6 mm. The rostrum 

 is narrow, spear-shaped, provided with a small tubercle on its 

 superior surface, from which runs a fine ridge along the middle line 

 as far as the occipital furrow ; at the base of the rostrum there is 

 on each side a pointed tooth.'' The anterior margin is well defined 

 on either side of the rostrum, and still more along the lateral 

 margin. The lateral margins are slightly but evenly curved, and 

 provided with small pointed teeth directed forwards; of these the 

 anterior one is mach larger than the rest, and forms the demarcation 

 of the angle between the anterior margin and the lateral margin. 

 The occipital furrow and its branches are deep and distinct. The 

 regions on the border are well defined, and are thinly but sharply 

 granulated. Besides this the superior surface shows several ridges, 

 anteriorly alternately longer and shorter, and here and there are 

 small tubercles. The cardiac region is short and broad, with 

 a narrow, straight sulcus in front and behind ; it is crossed by three 

 lines, the two anterior ones converging towards the sides. The 

 middle part in front of the occipital furrow forms an oval area 

 pointed towards the sides. On the gastric region, near the middle 

 line, in front, are two tubercles (on the carapace itself there have 

 probably been teeth corresponding to these) ; outside and below 

 these are smaller, more or less pointed ones (on both the cast and 



^ Ortmarm: Arthropoda, p. 1150. 

 '^ Milne Edwards : " Crustaces du Cap Horn," p. 32. 

 ^ Heudersou: Anomura, p. 121, pi. xii, fig. 1. 



* After the original specimen had been drawn it Avas being still further developed,, 

 and in this operation the rostrum was unhappily destroyed. — K. 0. S. 



