202 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 21 



In the smallest of the young, 2 to 3 mm, the rostral spines are rela- 

 tively longer and less divergent than in older specimens. The hepatic 

 spine is more of a spinule, the branchial spine scarcely apparent. Most re- 

 markable is the postorbital projection, which starts as a spine similar to 

 the hepatic, but typically bifid. As growth progresses it broadens, the 

 edges become serrate, and it begins to tilt downward, gradually assum- 

 ing the 45 degree angle described by Rathbun, and continuing in older 

 specimens until it is perpendicular to the plane of the hepatic spine, the 

 serrations meanwhile having disappeared. In the very young only its 

 distance from the eye reveals a difference in the orbit from the young 

 of Pugettia richi. 



Breeding: Ovigerous females have been taken in every month of the 

 year, with April and August favored by the largest number of collections. 



Remarks: Previously known from but three of the Channel Islands, 

 Santa Cruz, Santa Catalina, and San Clemente, and from one Lower 

 California locality, San Geronimo Island, Pugettia dalli is now known 

 to occur on all eight of the Channel Islands and at nearly a dozen Lower 

 California localities, including the islands of Cedros and San Benito. 

 Specimens from Guadalupe Island, an outlier of the Lower California 

 coast, formerly grouped with P. dalli, are now believed to represent a 

 distinct species. 



The slenderness of the legs is a reliable means of separating large 

 numbers of Pugettia dalli from P. richi, just as P. richi may be separated 

 from P. gracilis in like manner. 



Pugettia hubbsi, new species 

 Plate K, Figs. 1-6 ; Plate L, Fig. 7 



Type: Male holotype, A.H.F. No. 496, and ovigerous female, allo- 

 type, A.H.F. No. 496a, from Guadalupe Island, Lower California, 

 Mexico, South Bluff bearing 215° T. 2.8 miles; collected by Velero IV 

 in 40 fathoms at station 1922-49. Male and female, paratypes, same 

 locality and date. (For additional specimens see Material examined, 

 below.) 



Measurements: Male holotype: length 10.5 mm, branchial width 7.3 

 mm, hepatic width 6.5 mm, rostrum 2.9 mm, basal width 1.8 mm, cheli- 

 ped 12.0 mm, chela 6.5 mm, dactyl 3.2 mm, height of palm 2.9 mm, legs 

 13.5, 10.4, 7.8, and 7.3 mm, respectively. Female allotype: length 8.0 

 mm, branchial width 5.7 mm, hepatic width 5.5 mm. 



Diagnosis: Hepatic projection a slender spine curving forward; post- 

 orbital projection also a slender spine directed outward as well as forward 



