THE 'J'ERKESTiaAL ISOl'ODA OF NATAL. 575 



dorsally with small triangular-shaped scales ; exopodite long^ 

 with short terminal style, not extending beyond the posterior 

 margin of the basal plate, endopodite rather longer and 

 broader than the exopodite, setaceous. Telson (fig. 31) nearly 

 twice as long as the width of the posterior margin, not 

 extending beyond the uropoda, lateral margins slightly curved, 

 expanded anteriorly with raised lateral bosses and median 

 keel. 



Length 11*5 mm. 



Colour (in alcohol) horny-brown, with yellow mottling,, 

 pleural plates rather lighter. 



Habitat. — Port Alfred, Cape Province, January, 1914.. 

 (F. C. Graham.) 



Type. — Tn the Natal Museum. 



In the shape of the telson this species bears a slight 

 resemblance to C . g r i s e o- a 1 b u s {Dollfus) ( 14) . The rather 

 longer antennas, the form of the first maxillaj, and the absence 

 of the tooth on the underside of the inner margin of the 1st 

 mesosomatic segment, and the groove on the 2nd segment, ar& 

 features not hitherto met with in this genus. 



6. Cubaris trilobata u. fij>. PI. XLII, figs. 1-9. 

 Body oblong oval, strongl}' convex, surface smooth. 

 Cephalon (PI. XLII, figs. 1, 2) small and short, flanked by 

 the pleural plates of the first mesosomatic segment, anterior 

 margin raised, lateral lobes thickened but not pronounced ; 

 epistome with diamond-shaped concavity dorsally and a 

 V-shaped ridge ventrally. Eyes fairly large, situated dorso- 

 laterally. Antennula? (fig. 8) short and robust, with few 

 lateral setae on terminal joint. Antennae (fig. 4) slender,, 

 sparsely setaceous ; flagellum short, distal joint longer than 

 the proximal one. First maxilUe (fig. 5) with outer lobe- 

 terminating in four stout curved spines and six smallei" 

 pointed ones, inner lobe Avith trilobed head and three setose 

 spines, body with trilaminate border. The segments of the 

 mesosome are strongly convex, with the ])leural plates of 



