476 WALTER E. COLLINGE. 



grooved and the carpopodite globose. Uropoda (fig. 26) 

 comparatively small, basal joint slightly curved towards the 

 inside, endopodite straight and rather longer and wider than 

 the straight exopodite, both with terminal styles. Telson 

 (fig. 27) rather short, anterior margin prominent and rounded. 



Length 31 mm. 



Colour (in alcohol) light brownish-grey, with darker greyish 

 markings. 



Habitat. — Cape Peninsula (K. H. Barnard). 



Alloniscds Dana. 



This genus was founded by Dana in 1854. Some two 

 dozen species have been described as belonging to this genus, 

 but it is doubtful whether they are all correctly assigned. It 

 has a wide distribution, having been recorded from North 

 and South America, South Africa, Madagascar, India, Siam, 

 and numerous Pacific islands. 



3. Alloniscus marinus n. sp. PL XXIX, figs. 28-38. 



Body (fig. 28) oblong oval, strongly convex, finely tuber- 

 culated. Cephalon (figs. 29 and 30) convex above, with well- 

 defined frontal margin, which is produced in the median line, 

 cephalic lobes absent, epistome slightly concave with well- 

 marked transverse ridge above the antennal sockets. Eyes 

 oval, fairly large. Antennulae (fig. 31) short and stent, 3- 

 jointed, terminal joint with lateral setae and two enlaig-ed 

 set£e at the distal extremity. Antennee (figs. 32 and 33) of 

 medium length, joints 1-3 small, 4th joint longer and stouter, 

 5th joint elongated and narrow ; flagellum 3-jointed, proximal 

 joint the longest, remainder almost subeqnal, terminal style 

 short. First maxilla (fig. 34) with outer lobe terminating in 

 nine stout, bluntly ending spines, strong sette on the outer 

 side; inner lobe wide, with two sliort setose spines, the inner 

 one being slightly lower in position than the outer one. 



