648 Jassidae, Wyvillea 



j Side-plate 5 not much deeper than side-plate 6. 3. Gen. Microjassa . . . p. 651 

 \ Side-plate 5 much deeper than side-plate 6 — 4. 



Gnathopod 2 in cj, hind margin of 6th Joint 



Ijroduced into a tooth; gnathopod 2 in $ 



much larger than gnathopod 1 4. Gen. Jassa p. 652 



Gnathopod 2 in cj, hind margin of 6tli Joint 



not produced into a tooth; gnathopod 2 in 



$ not much larger than gnathopod 1 . . 5. Gen. l8ch3rroceru8 . p. 657 



1. Gen. Wyvillea Hasw. 



1879 Wyvillea (Sp. un.: W. longitnanus), Haswell in: P. Linn. Soc. N.S. Wales, 

 vA p.336 i 1888 W., T. Stebbing in: Rep.Voy. Ohallenger, u29 p.513 | 1880 Macleayia, 

 Haswell in: Ann. nat. Hist., ser. 5 «. 5 p. 32. 



Side-plates scarcely so deep as their segments. Antenna 1 shorter 

 than antenna 2, witb accessory flagellum. Mandible with palp. Maxillipeds 

 exunguiculate, inner and outer plates rudimentary; palp 3-jointed. Gnathopod 2 

 very large. üropod 3 apparently as in Jassa (p. 652). Telson entire or emarginate. 



2 species. 



Synopsis of species: 



Telson with blunt apex 1. W. longimana . . p. <^48 



Telson with apex emarginate 2. W. hasAvelli . . . p. 648 



1. W. longimana Hasw. 1879 W. longinianiis, Haswell in: P. Linn. Soc. N.S. 

 Wales, «.4 p. 337 t. 22 f. 7 | 1884 Podocerus l, Chilton in: Tr. N. Zealand Inst., u 16 

 p.255t.l7f.2a-e | 1879 F. cylimlricus (err., non Say 1818?), T.W. Kirk in: Tr. N. 

 Zealand Inst., v.U p. 402. 



Eyes round. Antenna 1 scarcely Va ^^ long as body; 2"^ Joint twice 

 as long as l^*-, a little longer than 3*^; flagellum as long as 2^ Joint of 

 peduncle, 7-jointed; accessory flagellum nearly 7^ as long as primary, 2-jointed. 

 Antenna 2 about half as long as body, stout, subpediform; peduncle as long 

 as antenna 1 ; flagellum as long as ultiruate Joint of peduncle, armed distally 

 with curved spiues. Gnathopod 1 small, 5*^ Joint about half as long as 6*^, 

 6*'^ ovoid, distally narrowed; palm very oblique, defined only by 2 palmar 

 spines; finger serrate (Chilton). Gnathopod 2 in d very large; 5*^^ Joint 

 small, triangulär, 6**^ cylindrical, curved, margins parallel, 4 times as long 

 as broad, with a blunt tooth at each end of the concave, rathe'r hirsute 

 margiu, which should be considered as the palm; proximal tooth not decurrent. 

 Gnathopod 2 in Q (Chilton) not larger than gnathopod 1, and similar thereto, 

 but with 5*^ Joint shorter, and 6*^ rather more narrowed distally; finger in 

 both gnatliopods roughened rather than seiTate. Peraeopods 1—5 all short 

 and broad, 1^* and 2*^ shorter than the rest. üropod 3, peduncle long, 

 nan-owing slightly distally; rami very short, inner stiliform, outer euding in 

 3 — 6 upturned teeth (Chilton). Telson conical, blunt. Colour pale yellow, 

 with many black dots and markings (Chilton). L. 3 — 14 mm. 



South-Pacific (Port Jackson [East-Australia] ; Worser Baj' and Lyttelton Harbour 

 [New Zealand]). 



2. W. haswelli (G. M. Thoms.) 1897 3laera h., G. M. Thomson in: Ann. nat. 

 Hist., ser.6 u20 p.449 t.lO f.6— 10 | 1899 Wyvillea h., T. Stebbing in: Ann. nat. Hist., 

 ser. 7 u 3 p. 350. 



Body slender and compressed. Head long, without rostrum; lateral 

 lobes small, acutely produced. Eyes produced well forward on lateral lobes 



