by Rev. T. R. R. Stebbing. 273 
with very large epipod, the endopod produced beyond the small 
flagellum of the exopod. Second maxilliped with much smaller epipod, 
the exopod with crenulate and setulose outer margin along two-thirds 
of the principal joint, thence abruptly narrowed to its junction 
with the small flagellum. Third maxilliped as usual of much more 
solid structure, the fourth joint triangular, almost concealing the 
insignificant palp which is attached some way from the acute apex of 
the fourth joint. The solid exopod reaches a little beyond the oblong 
third joint of the endopod and carries a very small flagellum. The 
chelipeds in both sexes much exceed in size the ambulatory limbs. 
To A. erosus, Miers, Alcock in 1896 added A. morwm and A. 
lapillulus. 
ACT#OMORPHA EROSUS, Miers. Plate XXXII. 
1877. Acteomorpha erosa, Miers, J. Linn. Soc., vol. xiii, no. 67, p. 
184, pl. 14. 
The South African specimen of this as yet very rare species is in 
essential agreement with the description and figures supplied by Miers, 
although I can find no trace of the dividing line which his figure 
shows on the under-side of the rostrum, and I should be far from 
describing the orbital cavity as “large.” ‘That the pleon should be 
narrowly ovate in the female, just as Miers describes it for the male, — 
agrees with Kemp’s observation in regard to the two sexes of the 
genus Dotilla (Mem. Ind. Mus., vol. v, p. 227; 1915). Alcock speaks 
of the exopod of the the third maxillipeds as “‘ narrow, with the outer 
edge almost straight.” In the present species it is half as broad as 
the endopod, with a decided curve to the outer margin. 
The chelipeds are comparatively massive, the exposed surfaces of 
the last four joints granular and pitted, the fifth joint having a 
projecting tooth on the inner surface ; the fingers are considerably 
shorter than the palm, with denticles on their confronting edges fitting 
closely together. The sexual openings of the female are in the sternum 
opposite the insertion of the third perzopods. The pleopods of the 
female have two long rami, one furnished with outstanding plumuse 
setze, the other with sete apparently simple and not spreading. The 
carapace has a length of 7 mm. and a breadth of 9 mm., the pleon 
extended being 6 mm. long. 
Locality : Port Shepstone, W.N.W. 23 miles; depth 24 fathoms. 
Cruise of the ‘ Pieter Faure.” 
