80 Annals of the South African Museum. 



is 6-jointed in the female, 5-jointed in the male specimen. The 

 second antennae have an 8-jointed flagellum, shorter than the 

 peduncle. 



The mandibles differ slightly one from the other, the accessory 

 plate on the left being, as so often, the stronger; it is succeeded by a 

 row of 10 spines, the number on the right mandible being appa- 

 rently only 8. The molar is strong, the palp slender, its third joint 

 half as long as the second, and armed only with three apical setae. 

 In the first maxillae the inner plate is fringed with 9 plumose setae, 

 of which three at the apex are separated by a clear unarmed space from 

 the other six. This is the case in both members of the pair, and 

 could be seen in readiness for reproduction at the next exuviation. 

 On the outer plate only 10 spines could be distinguished. The palp 

 has a large second joint, much widened in its distal half, the apical 

 margin fringed with 5 furcate spine-teeth and an outer spine-tooth 

 which is serrate instead of furcate, with the serration on its inner 

 side. In the furcate teeth the shorter tooth is the outer. The 

 second maxillae have the inner plate shorter but broader than the 

 outer, with an oblique fringe of slender spines near the inner 

 margin. 



The gnathopods are scarcely distinguishable from those of T. acan- 

 thurus, the fifth joint long and slender, slightly tapering distally. 



The perseopods are all alike in the shortness of the sixth joint, 

 against which the small finger folds back closely, so that it becomes 

 difficult to distinguish. Apparently it has a dorsal denticle. In all 

 the pairs the fourth joint is larger than the fifth, this in the first and 

 second pairs being but little longer than the sixth, but in the follow- 

 ing pairs more and more surpassing it. In the third and fourth 

 pairs the second joint is widely expanded, more so distally than 

 proximally, but in the fifth peraeopod this joint is widest proximally, 

 and is roughly squared above, so as to differ much from the rounded 

 appearance presented by the homologous joint in T. acanthitrus. 

 The marsupial plates of the female specimen are extremely narrow, 

 their ovigerous function being probably aided by the long branchial 

 vesicles. 



The first and second uropods have the peduncle longer than the 

 rami, which are nearly equal to one another in the first pair, but 

 more unequal in the second, in neither very elongate. In the third 

 pair the rami are much longer than the peduncle, the inner the 

 shorter, fringed with long setae, the outer carrying numerous 

 spines. 



The telson is subequal in length to the outer ramus of the third 



