124 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 21 



Crane's description, quoted above, being but a slight emargination 

 caused by failure of the two sides of the front to fuse completely along 

 the midline. 



Material examined: (See Table 20) A total of 41 specimens from 

 25 stations, ranging from Hughes Point, Lower California, and Rocky 

 Point, Sonora, Mexico, to Gorgona Island, Colombia, and including 

 Socorro Island. The largest series, from Isabel Island, Mexico, con- 

 tains 7 males and 4 females, the remaining stations but one or two 

 specimens each. In addition to the above, a male specimen from Arena 

 Bank, Gulf of California, Mexico (N.Y.Z.S. No. 36,697) (Crane, 

 1937, p. 52). 



Measurements: Largest specimen, a female: length 14.9 mm, width 

 11.9 mm, rostrum 2.0 mm, cheliped 17.5 mm, chela 6.5 mm, dactyl 3.8 

 mm, legs 41, 30.5, 26.5, and 25.3 mm, respectively. Male specimen: 

 length 12.6 mm, width 9.8 mm. 



Color in life: Adults, reddish-brown, the chelae speckled with 

 scarlet. Young male, pale buffy-yellow ; chelae speckled with scarlet; 

 bases of ambulatories tinged with pink. (Crane) 



Habitat: Recovered most frequently from sandy bottoms, often with 

 shell or nullipores present; less frequently encountered on bottoms of 

 coralline algae, sandy mud, and coral. Crane (1937, p. 52) gives 

 sandy bottoms with weed. 



Breeding: Ovigerous females were taken in March, April, and May 

 in the northern, or Gulf of California, portion of the range, and in 

 January and February in the southern, or Colombia, portion. 



Depth: Hancock expeditions material is from 2-30 fathoms (an 

 Ildefonso Island specimen, from 50 fathoms, is young and of question- 

 able identity). 



Remarks: A concave basal antennal article is common to the sub- 

 division of the genus characterized by a hood-shaped rostrum, which 

 includes the Atlantic Podochcla riisei, P. sidneyi, and P. algicola, as 

 well as the Pacific P. vestita and P. margaritaria. It would appear that 

 none of its describers have done justice to this striking feature, due 

 either to their familiarity with this character as exhibited in Atlantic 

 species, or to the failure of their Pacific material to exhibit it to the 

 perfection seen in Velero III specimens. As viewed from the ventral 

 aspect, the basal article appears semicylindrical, the concavity broadest 

 at the base. If a tiny probe is inserted into this concavity, the lamelli- 

 form processes of the two margins curl upward about it, that of the 

 inner surface a single, that of the outer surface a double lobe. 



