40 Lysianassa, Perrierella 



8-jointed, accessoiy flagellum 4-jointed. Antenna 2 in Q , ultimate Joint of 

 peduncle slightly longer than penultimate, flagellum 8-jointed; in d ultimate 

 Joint of peduncle twice lengtb of penultimate, flagellum with oSjoints, calceoli on 

 many of them. Mandible, palp set far back, 1^* Joint ratber long. Maxillipeds. 

 outer plates large, reacbing beyond 2*^ Joint of palp, 4^*^ Joint of palp very small. 

 Gnatbopod 1, 6*^ Joint much narrower and sligbtly longer tban 5**". Gnatbopod 2, 

 3*^ Joint ratber longer than 5*^, 6*^ oval, witb convex palm. Peraeopods 1 and 2. 

 4**^ and 5*^^ joints fringed witb plumose setae. Peraeopod 3, 2^ Joint broad, 

 rounded. Peraeopods 4 and 5, 2^joint somewbatproduced downward. Brancbial 

 vesicles witb large accessory lobes. üropod 3, rami sborter tban peduncle, 

 broadly lanceolate, setose on opposed margins, tbe outer ratber tbe longer. 

 Telson little longer tban broad, mucb sborter than peduncle of uropod 3, 

 distally squared, with a small central notch. Colour yellowisb raottled witb 

 brown, witb scattered white dots. L. 14 mm. 



Simon's Bay [Cape of Good Hope]. Deptli 33 m. 



7. L. punctata (A. Costa) 1840 Callisoma p. (nom.- nud.), 0. ft. Costa, Fauna 

 Reg. Napoli, Crost., Cat. p. 5 | 1851 C. punctatum, A. Costa, Fauna Reg. Napoli. fasc. 

 März. 1851 p. 4 t. 8 f. 4— 7 | 1851 C. p., (A. Costa in:) F. W. Hope, Cat. Crost. Ital., 

 p. 23, 44 I 1893 Lysianax pundatus, A. DellaValle in: F. Fl. Neapel, r. 20 p. 789 t. 6 

 f. 6; t.25 f. 22— 32. 



Head, lateral angles produced, rounded; Side-plate 4 greatly expanded 

 below, expansion not deep, but very broad. Pleon segment 3, postero- 

 lateral angles rounded. Eyes red-brown. Antenna 1 in , 1^* Joint tumid, 2*^ 

 and '6^ comparatively short, flagellum very short, 6- or 7-jointed, accessory 

 flagellum 3-jointed. Peraeopod 3, 2*^ Joint attacbed to a cleft in tbe side- 

 plate, narrow above, greatly expanded below. Peraeopods 4 and 5, 2*^ Joint 

 produced downward below tbe 3*^. Telson elongate, subrectangular, distally 

 witb a sballow but ratber wide notch. The rest as in L. longicornis (p. 39). 

 Ground colour citron-yellow, witb a generally red bue from very numerous 

 scarlet chromatophores; appendages colourless or greyisb. L. 9 6 — 7 mm. 



Gulf of Naples. Upon the pleon of Paguri laden with eggs, matching the 

 colour of its resting-place. 



L. costae M.-E. 1830 L. c, H. 31ilne Edwards in: Ann. Sei. nat., i'. 20 p. 365 

 t. 10 f. 17. 



L. 6—7 mm. ?. 

 Gulf of Naples. 



L. nasuta Dana 1858 & 55 L. n., J. D. Dana in: U. S. expl. Exp., v. 13 n 



p. 915; t. 62 f. 2a— m | 1893 Lysianax n., A. DellaValle in: F. Fl. Neapel, f. 20 p. 793. 

 L. 10 mm. 

 Tropical Atlantic (Rio Janeiro [Brazil]). 



L. pilicornis Heller 1866 L. p., Cam. Heller in: Denk. Ak. Wien, v. 26 11 

 p. 17 t. 2 f. 16. 



L. 8—9 mm. ^. 

 Adriatic (Leaina). 



22. Gen. Perrierella Cbevreux & E. L. Bouv. 



1892 Perrierella (Sp. un. : P. crassipes), Chevreux & E. L. Bouvier in : Bull. Soc. 

 zool. France, v. 17 ]). 50 | 1893 Py, J. Bonnier in: Bull. sei. France Belgique, t;.24 p. 181 j 

 1893 R, A. DellaValle in: F. Fl. Neapel, u 20 p. 840 | 1895 P., G. Ü. Sars, Crust. 

 Norway, vA p. 677 j 1892 Pararistias (Sp. un.: P. audouinianus), D.Robertson in: 

 P. nat. Hist. Soc. Glasgow, n. ser. v. 3 p. 201. 



