Crustacean Fauna of South Africa. 199 



adult $ , but the lower part of hind margin is straight, the teeth are 

 as in the young $ , but sharper and more closely set. 



Fifth peraeopod, hind margin of 2nd joint strongly convex, serrate. 



Seventh joint of all the peraeopods with 2-3 spiue-setae at inner apex. 



Third uropods as figured for serrula: 



Length : 9 mm. ; ? 6 mm. 



Colour : White, with a somewhat irregularly reticulated transverse 

 violet band on the head and each of the peraeon and pleoii segments, 

 in the median line on the peraeon and pleon there is a lozenge-shaped 

 patch of the white ground colour surrounded by a border of violet, at 

 the hinder end of which is a deep violet spot, side-plates and 2nd 

 joints of 3rd to 5th peraeopods with a broad violet stripe, antennae 

 ringed with violet, eyes black. 



Locality: Buffels Bay (False Bay). 28/9/13. (K.H.B.) 1 jixv. g ; 

 Durban, Natal. March and July, 1915. (H. W. Bell-Marley.) <$ $ , 

 ovigerous ? , and juv. (S.A.M. Nos. A2535, A3376, and A3844.) 



Geogr. Distribution: New Guinea (Bate) : Ceylon (Walker) ; Zan- 

 zibar (Walker) ; Suez (Walker). 



ELASMOPUS BOECKII (Haswell). 

 (Plate XXVII. Figs. 13, 1-4.) 



1879. Megamoera boeckii Haswell, Proc. Linn. Soc. N.S.W. vol. 4, 



p. 3S6, pi. 21, fig. 6. 

 1899. Elasmopus ,, Stebbing, Tr. Linn. Soc. Loud. ser. 2, vol. 7, 



p. 426. 

 1906. id. Das Tierreich, 21, p. 445. 



Haswell's description is very brief, and his figure of the 2nd guatho- 

 pod is not at all clear, so that it is very doubtful if -the present speci- 

 men is correctly assigned to his species. Moreover, it is thrice as long 

 as the original one, which, was most probably immature. 



Eyes elongate oval, vertical. Peraeou and pleon without serrations 

 or setae. Side-plate 1 fairly produced forwards, inferior margins of 

 1-4 not serrate, 5 not as deep as 4. Postero-inferior angle of 3rd 

 pleon segment quadrate with a very minute point, posterior margin 

 straight, entire. 



Telsou cleft for f of its length, lobes dehiscent, apices excavate 

 between two teeth, a small tooth at base of excavation, whence arise 

 also 2 unequal stout spines. 



First antenna reaching to end of pet-aeon, 2nd joint a little longer 

 than 1st, 3rd \ 2nd, flagelluin shorter than peduncle, ca. 25-jointed, 

 accessory flagelluin 4-jointed, equal to the first 4-5 flagellar joints. 



