368 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 5 



Habitat. — A variety of bottom conditions is recorded, including rock 

 with sand patches, shell, nullipore, and mud. 



Depth. — S. debilis has been taken by Velero III collectors from shore 

 to 60 fms. 



Remarks. — Because of their exceeding fragility and the fact that most 

 of the specimens were obtained by the cotton swabs of the tangles, only a 

 few of our S. debilis from the Galapagos Islands are in perfect condition. 

 The series as a whole is remarkable for the minute size of the specimens. 

 Only two may be considered at all well developed. These, being males, 

 have enlarged and thickened palms, and one of them shows the supple- 

 mentary spinules along the rostral spine and walking legs particularly 

 well. The fingers of this specimen are hairy. 



The vertical range of the species has been extended to 60 fathoms. 



Genus ANOMALOTHIR Miers, 1879 



Anomalothir hoodensis Garth 



Plate 64, Figs. 1, 2 



Anomalothir hoodensis Garth, Allan Hancock Pac. Exped., vol. 5, no. 2, 

 pp. 9-ll,pl. l,f?gs. 1-4, 1939. 



Type locality. — North of Hood Island, Galapagos Islands, 140-160 

 fms. 



Type.—ARF no. 381. 



Range. — Waters of the central and southern islands of the Galapagos 

 group. 



Atlantic analogue. — A. frontalis (A. Milne Edwards). 

 Diagnosis. — Postorbital spine longer than preorbital. Third and 

 fourth legs of approximately equal length. A single spine on the carpus 

 of the cheliped. Merus of the third leg entire. Carapace little produced 

 posteriorly ; no tubercle in front of posterior margin. 

 Material exa?nined (8 specimens from 5 stations). — 

 792-38. Off Daphne Minor Island, 70-80 fms, Jan. 20, 1938, 2 males. 

 810-38. (D-1) Barrington Island, 48 fms, Jan. 26, 1938, 1 male, 



1 female. 

 810-38. (D-2) Barrington Island, 73 fms, Jan. 26, 1938, 1 female. 

 814-38. North of Hood Island, 20-40 fms, Jan. 28, 1938, 1 male. 

 817-38. North of Hood Island, Lat. 1° 20' S, Long. 89° 40' W, 140- 

 160 fms, Jan. 29, 1938, 1 male, 1 female (holotype, AHF no. 381). 

 Measurements. — Female holotype: length 10.8 mm, width 5.6 mm, 

 cheliped 12.6 mm, first ambulatoiy leg 21.8 mm. 



