REPORT ON THE AMPHIPODA. 1451 



64° 37' S. To the range which they show from east to west there are only two 

 localities to be added from earlier sources, namely, the waters of the Pacific off Chili, in 

 which Guerin's type specimen was obtained, and the Atlantic, hit. 8° S., long. 46° E., 

 which White gives for his Primno guerinii. 



Family Phorcid.e, Spence Bate, 1862. 



Spence Bate in 1862 established the Phorcidse as the fourth family of the division 

 Hvperina, placing it between the family Platyscelidse and the family Oxycephalidse ; in 

 the definition of the family he includes the character "third pair of pereiopoda imperfectly 

 developed," but as all the joints of the third perseopods are present, and some of them of 

 unusual length, the mere fact of their tenuity can scarcely be described as imperfect 

 development. Bovallius in 1887 gives the following diagnosis : — 



" Head nearly globular, a little tumid, deeper than the body. Eyes occupying the 

 lower parts of the sides or the whole sides of the head. First pair of antennae fixed at 

 the anterior side of the head; first joint of flagellum tumid, the rest subterminal. Second 

 pair few-jointed, short, not angularly folded, fixed at the inferior side of the head. 

 Mandibles with palp (in the males), or wanting palp (in the females). Seventh pair of 

 pereiopoda [Fifth Perasopods] reduced. Peduncles [?uropods] normal." 



As far as I know, no description distinctly referring to the mandibles of the female 

 in any species of this family has yet been published. 



Genus Phorcorrhaphis, n. n. (Phorcus, Mdne-Edwards, 1830). 1 



1830. Phorcus, Milne-Edwards, Ann. d. Sci. Nat., t. xx. pp. 385, 391 (extr., pp. 34, 40). 



1837. ,, Burmeister, Handbuch der Naturgeschichte, Abth. ii., Zool. 



1838. „ Milne-Edwards, Hist. Nat. des Anim. sans vertebres, t. v. 

 1840. ,, Lucas, Hist. Nat. des Crust., Arachn. et Myriap., p. 235. 

 1840. „ Milne-Edwards, Hist. Nat. des Crust., t. iii. p. 79. 



1852. „ Dana, Amer. Journ. Sci. and Arts, ser. 2, vol. xiv. No. 41. 



1852. „ Dana, U.S. Explor. Exped., vol. xiii. pt. ii. pp. 1000, 1006, 1442. 



1862. ,, Spence Bate, Brit. Mus. Catal. Amph. Crust., p. 339. 



1886. ,, Gerstaecker, Bronn's Klassen und Ordmmgen, Bd. v. Abth. ii. p. 485. 



1887. ,, Bovallius, Systematical List of Amph. Hyper., Bihang till K. Svensk. Vetensk.- 



Akad. Handl., Bd. 11, No. 16, p. 28. 

 1887. ,, Claus, Die Platysceliden, p. 66. 



For the original definition of the genus, see Note on Milne-Edwards, 1830 (p. 142). 

 The following descriptions of new species will show that the size of the second perseon- 

 segment does not at any rate afford a generic character, and that the fourth perseopods 



1 Phorcus being preoccupied by Risso in 1826 for a genus of Mollusca, the name is altered to Phorcorrhaphis, from 

 Phorcus and 6u(pis, a needle, in reference to the needle-like third peravopod. 



