122 Cumacea: 11. Diastylidae, 6. Paradiastylis 



than either. sligMy narrowed at the base, with a pair of tubercles at about 

 one-third of its length, distal half sharply convergent to exceedingly narrow 

 apex carrying a pair of spinules, Avith pair of setules adjacent and a second 

 pair higher up. Antenna 1, 2"^ joint of peduncle the shortest, principal 

 flagellum :3-jointed, accessory 2-jointed. Antenna 2 of 9 3-jointed. Mandibles 

 with about 9 spines in spine-row. Maxilliped 3, 2''^ joint much expanded 

 distally, following joints not expanded. Peraeopod 1 not very long, 2"*^ joint 

 little longer than 6^\ which is more than twice as long as the 1^^. Peraeo- 

 pod 2, 2"'i joint broad, 3^ a narrow ring, 6*1^ V4*^^ as long as 1^\ Following 

 limbs rather stout, A^^ joint much longer than 5^^. Peduncle of uropods 

 twice as long as 6**^ pleon segment, a little less than twice the exopod apart 

 from its long apical spine; exopod a little shorter than endopod, of which 

 the P*- joint is a little shorter than 2''^ and 3^ combined, spines of medial 

 margin respectively 2, 1, 1. L. y 3-2 mm. 



Gulf of Manaar, Cheval Paar, depth 13 m. 



3. P. longipes Calm. 1905 P. l, Caiman in: Siboga-Exp., nr. 36 p. 2, 21 

 tf. 4a— i I 1908 P. I., Zimmer in: Ergeb. Tiefsee-Exp., v.8 p. 181 | 1911 P. l, Caiman in: 

 Tr. zool. Soc. London, v. 18 iv p. 376. 



Near to P. brachi/urus, but the lateral surface of the carapace has 

 only 3 oblique ridges, no strong dorsal teeth, only a pair of denticles on 



Fig. 75. Fig. 76. 



P. longipes (?) Caiman, maxiUiped 3. P. longipes (cJ) Caiman, maxilliped 3. 



the eyelobe and a few in front of the anterior oblique ridge, the paired 

 longitudinal crests on hinder part of dorsal surface finely serrated and more 

 prominent, the space between them deeply hollowed; pedigerous segments 3, 

 4 indistinctly separated; pleon more slender, lateral serrations more extensive; 

 antenna 1 with 3*^ segment longer and more slender; maxilliped 3 with 

 narrower 2^^ joint; peraeopod 1 much longer, following limbs more slender, 

 peduncle of uropods thrice as long as &^^ segment of pleon. In the adult d 

 the sculpture of the carapace is less strongly marked than in the 9, the 

 broad eyelobe has 3 large but ill-defined corneal lenses; pleon segments 

 1_6 quite smooth, pre-anal part of telson subcylindrical, relatively longer 

 than in 9, a pair of spinules adjacent to the apical pair. Antenna 1 with 

 each flagellum 4-jointed. Maxilliped 3 with 2'^^ joint much broader than 



