Wyvillea, Parajassa 649^ 



of liead; lenses uuraerous. Antenna 1, 1^* Joint thicker but rather shoiiier 

 than 2^ or 3<^, 3*^ a little shorter than 2"^; flagellum slender, broken; 

 accessoiy flagellum 4-jointed, about as long as 3<^ Joint of peduncle. Antenna 2 

 broken. Mandible normal; palp with very short 1^* Joint, 3^ rather shorter 

 than 2*^, broad ended, with setae on apex. Gnathopod 1 small, 5*^ Joint 

 distally a little expanded, G*^ rather shorter, oval, palm oblique, ill-deflned, 

 finger a little over half as long as 6*^ Joint. Gnathopod 2 very large, 4*^ 

 Joint small, triangulär, bind margin produced acutely, 5**^ Joint very short, 

 similarly produced very acutely, 6*^ veiy long, narrow at base, widening 

 gradually to a transverse, slightly denticulate palm, defined by a small tooth; 

 the straight bind margin having also a small tooth or projection at its base; 

 the great finger projects far over the palm, its falcate end closing between 

 the acute ends of the 4*^ and h^^ joints. Peraeopod 4 rather slender. 

 Uropods 1 and 2 reaching nearly as far as uropod 3. Telson (in figure) 

 broader than long, rounded, with an excavation little more than ^/g the 

 length. between 2 rounded apices, each with a spinule. L. 4 mm. 



South-Pacific (New-Zealand). Deptli 15 m. 



2. Gen. Parajassa Stebb. 



1813/14 Jassa (part.), Leach in: Edinb. Enc, v.7 p.433 1 1859 J., R. M. Bruzelius 

 in: Svenska Ak. Handl., n. ser. i;. 3 nr. 1 p. 18 | 1871 Janassa (Sp. un.: J.variegatd) 

 (non G. Münster 1839, Pisces!), A. Boeck in: Forh. Selsk. Christian., "1870 p.249 | 1876 

 J., A. Boeck, Skand. Arkt. Amphip., v.2 p. 608 | 1894 J., G. O. Sars, Crust. Norway, 

 r. 1 p. 598 I 1895 J., A.O.Walker in: Ann. nat. Hist., ser. 6 v.lb p.472 \ 1899 Para- 

 jassa, T. Stebbing in: Ann. nat. Hist., ser. 7 r. 3 p. 240. 



Like Jassa (p. 652), except that the accessory flagellum of antenna l 

 is nearly obsolete, none of the side-plates are paiücularly deep, and thfr 

 b^^ side-plate is almost as deep as the 4*^. 



2 species. 



Synopsis of species: 



Antennae 1 and 2 eonspicuously unequal 1. P. pelagica p. 649- 



Antennae 1 and 2 subequal 2. P. tristanensis . . . p. 650 



1. P. pelagica (Leach) 1813/14 Jassa p., Leach in: Edinb. Enc, v.7 p.433 | 

 1899 Parajassa p., T. Stebbing in: Ann. nat. Hist., ser. 7 v.'i p. 240 | 1843 Podocertis 

 cajMlatus, H. ßathke in: N. Acta Ac. Leop., i'. 20i p. 89 t. 4 f . 8 | 1859 Jassa capillata, 

 R. M. Bruzelius in: Svenska Ak. Handl., n. ser. v.3 nr. 1 p. 19 I 1894 Janassa c, G. 0. 

 Sars, Crust. Norway, v.l p. 599 t. 214 j 1895 J. c, A.O.Walker in: P. Liverp. bioL 

 Soc, V.9 p. 316 j 1871 J. variegata (err., non Podocerus variegatus Leach 1813/14!), 

 A. Boeck in: Forh. Selsk. Christian., 1870 p. 250 i 1876 J. v., A. Boeck, Skand. Arkt. 

 Amphip., i-.2 p. 608 t. 28 f. 1 ; t.29 f.2and?3 | 1893 Podocerus falcatus i^&ri.), A. Della 

 Valle in : F. Fl. Neapel, v. 20 p. 445. 



Body (Fig. 111p. 650) rather tumid, especially in Q . Head rather small, 

 front lobes narrowly rounded. 1®* and 3^ side-plates produced below the 

 2^. Pleon Segment 3, postero-lateral corners rounded. Eyos small, rounded, 

 dark. Antennae 1 and 2 in d und Q densely setose with setae separate 

 and in fascicles. Antenna 1 more than 7» as long as body; 3'^ Joint longer 

 than 1^*, as long as 2<^, rather longer than flagellum, of which 1^* Joint is 

 very large, 2*^ and 3*^ minute; accessory flagellum a mere tubercle. Antenna 2 

 longer and much stronger; ultimate Joint of peduncle slightly longer thaa 



