39 



A distinguishing specific character is that the segments of the 

 pleon are furrowed and ahnost or altogether covered with 

 flattened squamiforni tubercles. The colour (in fornialin) is a 

 rich red brown, according to Milne-Edwards irregularly spotted 

 Avith yellow, but the pale markings are at least sometimes sym- 

 metrically arranged. The telson and adjacent parts show a fine 

 purple- Kratiss states that when alive it is dark green, with red- 

 dish and yellow- spots, but that it becom;es red in drying, or when 

 kept in spirit. Milne-Edwards gives the length of the body as 15 

 inches; Krauss says it attains a length of 13 inches by a breadth 

 of foiu' and a half. The second antennas are of great length, at 

 least as long as the body. 



Locality : — Hermanuspetrusfonteiu, Caledon District, near 

 False Bay. 



Jasus parkeri, n. sp. 



Plate 7. 



The rostrum is not \'ery large, acute, upturned in ad\-ance of 

 the clasping processes- The frontal horns are divergent, acute, 

 with smooth margins, followed by two pairs of teeth slightly con- 

 verging backward ; a little behind these is a median tooth, 

 ■ followed b}- two parallel rows of submedian teeth, eight in a row, 

 slightly graduated, the smallest at the hind margin of the cara- 

 pace, all pointing upward and a little forward. (3n the outer side 

 ^i each eve is a strong outstanding tooth, with a small subsidiary 

 tooth on the upper part of its base ; the next lateral tooth has an 

 interrupted outer margin, and level wkh this there is a sm&ll 

 tooth on the surface of the carapace behind the eye: the third 

 lateral tooth is also large, but this is followed by a series of small 

 teeth, twelve to fourteen on each .side, not quite symetncally 

 arranged- Close over the sinuous hind margin is a series of 

 iimiute tubercles, and some granules appear scattered above 

 .these, but otherwise the general surface is smooth, nor is there 

 any well-marked cervical groove- 



The first live pleon segments have a median carina, most 

 strongly marked on the first three, the first, which is also the 

 shortest, with a forward and upward-pointing tooth, the fourth 

 with a minute, the fifth with a well-marked apical tooth. Each 

 sr?gment forms a large lateral tooth, of which the upper margui 

 is serrate in the first segment, smoolth in the rest ; above this a 

 boss in the first segment rises to the carapace, and there is a 

 small denticle in the second ; all but the first have a smaller lower 

 tooth, and all clasp a little pleural tubercle of the following 

 segment between two points- The sixth segment has two pairs 

 of submedian teeth near the base and an apical median tooth, 

 with a strong additional tooth over the peduncle of the uropods. 

 The telson has four pairs of teeth diverging along the calcareous 



