of the maxillary more than ^ that of the head ; teeth in a single 

 series in both jaws, those in front slightly larger ; interorbital 

 space a mere ridge ; dorsal commencing on a prominence 

 which projects forward over the upper eye. 



This definition approaches so nearly that of the genus 

 Pseudorhombits m some respects (teeth, length of maxillary, 

 etc.), that until more specimens are procured, its validity as a 

 separate genus, and not merely an abnormality, must be received 

 with some doubt. The peculiar feature which distinguishes it 

 from Psendorhombiis is the near approach to the original 

 bilateral symmetry of the head, and such variation, though very 

 striking, is perhaps to be expected in a character of so recent an 

 origin philogenetically. It apparently, however, does not 

 belong to either of the three species of Psendorhombiis already 

 recorded from this region (P. russclli from the Umbilo River, 

 Port Natal, recorded by Giinther, ride Catalogue, Vol. IV., 

 p. 424 ; and the new species described above). It differs from 

 these, and all the Indian species recorded by Day, in having the 

 scales ctenoid on the blind side and it apparently belongs to an 

 undescribed species. 



Pseudorhombus andersoni, n.sp. 



(Plate XXVI.) 



D. 74. A. 54. L. 1. 85. 



Depth i, head 3^ m length (excluding caudal). Eyes close 

 together separated only by a ridge in diameter a little more 

 than \ the length of the head, and equal to the distance between 

 the lower and the end of the snout. The maxillary reaches to 

 below the hiiid third of the eye. Teeth: about 12 in the lower 

 jaw on the left side, 8 on the right. The dorsal fin commences 

 at the tip of the projection which is about i^ times in the dia- 

 meter of the e}'e. The pectorals are about equal, and one half 

 the length of the head. The caudal was somewhat damaged, 

 but appeared to have been wedge shaped, the middle ray 

 (32 mm.) being apparently the longest. 



The scales are ctenoid on both sides ; the anterior curve of 

 the lateral line is well marked, its depth being about a third of 

 its length. The dorsal branch of the lateral line goes to the 

 gth ray of the dorsal. Scales occur on the ra}-s of the dorsal 

 and anal. Any colour that may have been present has been 

 entirely removed by the spirit in which the specimen had been 

 preserved for a long time. 



Total length, including caudal, 17G mm. 



Locality: The single specimen was found in Durban Harbour 

 by Mr. A. Anderson to whom we are indebted for this and 

 other valuable specimens. 



