292 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL.21 



Size and sex: Large individuals recorded to date are males of 60.4 

 mm (Dana), 67 mm (Milne Edwards and Lucas), and 90.5 mm (Rath- 

 bun, 1925). Of the latter specimen (M.C.Z. No. 1870) Rathbun 

 writes: "The dorsal spines of the carapace are reduced to tubercles; 

 even those of the margins are short and conical. The rostrum is much 

 wider at the base than its length and does not widen at the tip as in the 

 young. The inner margins of the orbits converge anteriorly, and the 

 width of the body, exclusive of spines, in relation to its total length, is 

 greater than in smaller specimens." Males in the Lund University Chile 

 Expedition series range from 25.7 to 50.0 mm, females from 25.3 to 

 32.2 mm, the latter an ovigerous specimen. 



Breeding: A single ovigerous female was obtained by the Lund Uni- 

 versity Chile Expedition in Seno Reloncavi, Chiloe, in December. 



Remarks: Lund University Chile Expedition material bears out the 

 segregation of Libidoclaea granaria from L. g. smithi on the basis of 

 depth, L. granaria being the shallow water form. 



Libidoclaea granaria smithi (Miers), new combination 

 Plate P, Fig. 8; Plate 32, Fig. 2 



Libinia smithii Miers, 1886, p. 73, pi. 9, figs. 1-lc. Pfeffer, 1890, p. 545. 

 Rathbun, 1898, p. 574. 



Libinia hahni A. Milne Edwards, 1891, p. 5, pi. 1, figs. 1-6 ( 9 ) ; type 

 localities, Beagle Channel, in sight of Loupataya, 198 meters, and 

 near Murray Narrows, 280 meters; female holotype in Paris Mu- 

 seum. Lenz, 1902, p. 757. 



Libidoclaea smithii, Rathbun, 1925, p. 226, pis. 74, 75; pi. 231, fig. 3. 



Libidoclaea smithi, Garth, 1957, p. 28. 



Type: Male holotype, length 26 mm, width 25 mm, rostrum 13.5 

 mm, in British Museum. 



Type locality: Off Chiloe, 45 fathoms, Challenger station 304. 



Localities subsequently reported, with collectors: Chile: Calbuco, 

 10-15 fathoms, L. Plate (Lenz, as Libinia hahni) ; off Chonos Archi- 

 pelago, 1050 fathoms, off Port Otway [Puerto Barroso], 61 fathoms, 

 between Wellington Island and mainland, 194 fathoms, off Esperanza 

 Island, 122 fathoms, and Strait of Magellan, 369 fathoms, Albatross 

 (Rathbun, 1898) ; Beagle Channel in sight of Loupataya, 198 meters, 

 and near Murray Narrows, 280 meters, Scientific Mission to Cape 

 Horn (A. Milne Edwards, as Libinia hahni). 



