South African Crustacea. 75 



and that scale falls a little short of the rostral apex. The mandible 

 has a slender three-jointed palp, a tridentate incisor plate and a 

 prominent molar ending in a group of three strong teeth. The palp 

 of the first maxillae is apically deeply bifid. The telson has a pair 

 of dorsal spines at the middle, two pairs on the sides of the triangular 

 apex, the outer pair very small, a group of feathered setae extending 

 beyond the inner pair ; microscopic prickles fringe the lateral margins, 

 and perhaps extend over much of the surface. Of the intermediate 

 pair of dorsal spines the left-hand spine could not be discerned. 



Locality. Mouths of rivers flowing into Delagoa Bay yielded a 

 single specimen, named after the bay. A 2196. 



GEN. LEANDEE, Desrnarest. 



(See the General Catalogue of South African Crustacea, 1910, in 

 these Annals, vol. 6, p. 386, where for Leander squilla should, I now 

 think, be read Leander affinis (Milne Edwards). See also Trans. E. 

 Soc. Edinb., vol. 50, p. 286, 1914, and these Annals, vol. 15, p. 81.) 



LEANDER PERINGUEYI, n. sp. 

 Plate LXXXI. 



This species belongs to the section of the genus in which the 

 palp of the mandible is three-jointed, in company with L. serratus 

 (Pennant), L. affinis (Milne Edwards), L. adspersiis (Eathke). But 

 from all the congeneric forms with which I am acquainted it is dis- 

 tinguished by its peculiar rostrum. A small tooth on the carapace 

 is followed at a well-marked interval by a series of 4 teeth, suc- 

 cessively larger, the hindmost of them slightly behind the base of the 

 eyestalk ; to these again at an interval succeeds a series of 3 small 

 teeth successively smaller, leading to a slightly upturned apex, broad 

 in lateral aspect, its ventral margin receding to a broad cavity formed 

 by a curved acute process at some distance to the rear, with no other 

 ventral teeth except a microscopic spinule between the apex and the 

 cavity. The telson is sharply carinate for- half its length, twice as 

 broad at its base as distally at the base of its little acute apical 

 triangle, this base being furnished with a pair of long spines, 

 between which are two rather longer setae, while they are flanked 

 by a pair of much smaller spines. From the 2 pairs of dorsal spines 

 normally to be expected, one spine of the upper pair is wanting in 

 this specimen. 



In the first antennae the second and third joints are subequal in 



