344 Annals of the South African Museum. 



determination Richardson's description is lacking in detail, e. g. the 1st 

 peraeopod is described as " prehensile with a large propodus." Nor 

 has the species been figured. 



In spite of this, I think there can be little doubt that the Cape 

 specimens are specifically the same as the " Talisman " specimens. 



The genus belongs to that section of the Anthuridae which has 

 styliform mouth-parts, these appendages being somewhat similar to 

 those of the genus Calathura N". & S. 



PSEUDANTHURA LATERALIS Rich. 



(Plate XV. Figs. 13-16.) 



1911. Pseudanthitra lateralis Richardson, I.e. p. 524. 



Miss Richardson's description applies to the Cape specimens, but in 

 addition the following details may be given. 



The specimens are smaller, but the relative lengths of the head and 

 peraeou and pleou segments are the same as given for the type-speci- 

 mens. The sex of the latter is not mentioned, but they seem to have 

 been females to judge by the description of the 1st antenna. The 

 male possesses the same ventral process on the 1st peraeon segment 

 and the 2 dorsal tubercles on segments 2 and 3. 



Antenna 1 , 1st joint larger than 2nd plus 3rd, 2nd and 3rd 

 shorter and stouter than in $ , fiagellum of 10 distinct joints, of which 

 the first 4 are swollen and broader than long, the rest slender and 

 longer than broad, the first 6 joints densely setose. 



Antenna 2, 2nd joint the stoutest, but 5th longest, flagellum in $ 

 10-joiuted. 



Upper lip tapering to a subacute apex. 



Lower lip with acute apices. 



Mandibles stout and not very elongate, apices acute, palp stout, 

 1st joint shortest, 3rd a trifle shorter than 2nd, distal half of its 

 margin with a regular row of setae. 



Maxilla 1 long, slender, apically serrulate. 



Maxilliped, 2nd joint produced acutely on inner apex, palp composed 

 of 1 or possibly 2 joints ; epipod small, oval. 



The mouth -parts bear a strong likeness to those of Calathura 

 norvegica as figured by Sars in Crust. Norw. vol. 2, pi. 19. 



Peraeopod 1 alike in both sexes, but rather stronger in the $ , 

 surface of all the joints scaly, 2nd equal to 3rd-5th joints together, 

 narrow proximally, swelling rapidly, 3rd length of 2nd, 4th strongly 

 produced on anterior margin so that breadth is here twice length, 5th 



