1458 THE VOYAGE OF H.M.S. CHALLENGER. 



7. Station 202, October 27, 1874 ; off Samboangan ; lat. 8° 32' N., long. 121° 55' E. 

 One specimen (Phorcorrhaphis mmboangse). 



8. April 3, 1875, North Pacific; lat. 24° 49' N., long. 138° 34' E. ; surface. 

 Two specimens (Phorcorrhaphis edwardsi). 



Only three other localities have been hitherto recorded for this genus, a different 

 species coming from each locality, — Phorcus reynaudii, Milne-Edwards, from the Indian 

 Ocean; Phorcus hyalocephalus, Dana, from the "Atlantic, latitude 1° south, longitude 

 18° 20' west"; and Phorcus loveni. Bovallius, from the Caribbean Sea. Bovallius alone 

 makes any reference to the females of this genus, and he only incidentally in giving 

 the characters of the family ; all the Challenger specimens appear to be of the 

 male sex. 



Genus Lycseopsis, Claus, 1879. 



1879. Lycxoptis, Claus, Die Gattungen und Arten tier Platysceliden, pp. 32, 41. 



1887. „ Bovallius, Systematical List of tlie Amph. Hyper., Bihang till K. Svensk. 



Vetensk.-Akad. Handl., Bd. 11, No. 16, p. 29. 

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



For the shorter of the original definitions of this genus, see Note on Claus, 1879 

 (p. 493). In 1887 Claus places the genus next to Phorcus, and describes it to the 

 following effect : — 



" Form Lyaea-like, with thick deep head, elongate peraeon and pleon. Segments of 

 the peraeon comparatively long, strongly imbricated, especially the two segments 

 carrying the Gnathopods. Front Antennae of the female five-jointed, with long stiliform 

 terminal joint, those of the male with three-jointed flagellum. Hinder antennae short, 

 with hook-like bend, five-jointed, without counting the extensive basal-plate which has 

 a joint-like distinctness. The eyes extended over almost the whole surface of the 

 head with large pigment mass. Mandibles outdrawn, stiletto -like. Maxillipeds with 

 large split inner plate, and broad outer plates with shell-like curvature (schalenformig 

 gebogenen). Gnathopods weak, simple ; the first pair with large gland-cells in the 

 ddated first joint, those of the second pair thinner and more elongate. Laminar first 

 joint in the third and fourth perseopods comparatively elongate, that of the latter much 

 the more extensive. Fourth peraeopods very strong, much longer than the preceding 

 pair, almost twice as long. The fourth and fifth joints of this pair considerably 

 elongated and with pectinate front margin. Fifth peraeopods feeble, but elongate, 

 with the full number of joints. Branchial vesicles limited to the fifth and sixth 

 segments. Peduncles of the first pair of uropods as long as the leaf-shaped rami." 



Bovallius in the same year, 1887, places the genus in the family Phorcidae, to which 

 it clearly belongs. 



