276 



BULLETIN 152, UNITED STATES NATIONAL MUSEUM 



last. First three segments of i^iale abdomen tuberculate; distal 

 end of each segment save the last marked by a harrow transverse 

 band of pubescence. Posterior half of sternum tuberculate, anterior 

 half punctate. 



Measurements .—Male holotype, length of carapace 17, width 25.6 

 mm. Female (21986), length 8.5, width 12.3 mm. 



Range. — Cape St. Lucas, Mexico; Bay of Panama; Galapagos 

 Islands, 5^2 to 33 fathoms. 



Material examined. — Ofl' Cape St. Lucas, Lower California, Mexico; 

 lat. 22° 52' 00" N.; long. 109° 55' 00" W.; 31 fathoms; rky.; temp. 

 74.1° F.; May 1, 1888; station 2829, Albatross; 1 male (21987). 



Bay of Panama; 1888; Albatross: Lat. 8° 05' 00" N.; long. 78° 51' 

 DO" W.; 33 fathoms; gy. S. brk. Sh.; Mar. 5; station 2796: 1 male, 

 holotype (21580). Lat. 7° 56' 00" N.; long. 79° 41' 30" W.; 51}^ 

 fathoms; gn. M.; Mar. 30; station 2805; 2 small males (21985). 



Off Hood Island, Galapagos Islands; lat. 1° 21' 30" S.; long. 

 89° 39' 45" W.; 20 fathoms; co. S.; April 7, 1888; station 2812, 

 Albatross; 1 female (21986). 



MEDAEUS SPINULIFER (Rathbun), new combination 



Filummis spinulifer Rathbun, Proc. U. S. Nat. Mus., vol. 21, 1898, p. 585, pi. 

 42, figs. 6-8 (type-locality, off Cape St. Lucas, 31 fathoms; type, Cat. No. 



21582, U. S. N. M.); Proc. 

 Washington Acad. Sci., vol. 

 4, 1902, p. 281.— Boone, 

 Zoologica, vol. 8, 1927, p. 217, 

 text-fig. 79. 



Diagn osis . — Rough and 

 hairy. Four lateral spines, 

 a subhepatic spine. Frontal 

 lobes triangular. Half or 

 nearly half of outer surface 

 of major palm smooth and 

 bare. 



Descriptio n. — Carapace 

 covered with a short coating 

 of downy hair, thicker on 

 anterior portion, where there 

 are tufts of longer and stouter 

 pkiure 45.— medaeus spinuufer, male, holotype, setae; or it maj'' be nearly 

 CARAPACE 12.5 MM. WIDE. 0. MAJOR CHELA. 6. MiNOR jjgj^pfj jj^ larffc specimcns. 



chela, c. Dorsal view . . 



Carapace wide, convex m 

 hoth directions, deeply areolated, covered with spinjform granules 

 which are very small posteriorly, but larger anteriorly, many be- 

 coming spinules on the antero-lateral regions. Median sinus of 

 front very large and V-shaped, forming inner margins of two large 

 angular lobes whose outer margins are longer and very oblique; 



