66 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL.21 



greater, the male measuring 10 mm by 7.7 mm, the female 7 mm by 6 

 mm. Chelipeds elongated to almost four times the length of the carapace, 

 the chela occupying over half this length. Ambulatory legs correspond- 

 ingly attenuated and decreasing regularly in length from first to last. 

 A third median spine present on the intestinal region in addition to the 

 gastric and cardiac spines. Pterygostomian region clearly visible in dorsal 

 view between postorbital lobe and hepatic spine. Under side of post- 

 orbital lobe concave. Outer maxilliped with a triangular merus sharply 

 produced at anterointernal angle, broadened toward anteroexternal 

 angle, and but weakly grooved for insertion of the thickened and com- 

 pressed palpus. Abdomen widest opposite third segment and narrowest 

 at union of fifth and sixth, the last two segments being fused. A well- 

 developed spine present on the first segment, and rudimentary spines 

 on the following two, rather than three, segments. (Garth, 1946) 



The lobe protecting the orifice of the male first pleopod is low and 

 resembles an arc cut from a much larger disc. (Plate B, fig. 9) 



Material examined: For a complete listing of 104 specimens from 

 15 Galapagos stations see Garth (1946, p. 373). 



Measurements: Largest specimen, a male: length 10.0 mm, width 

 7.7 mm, rostrum 1.5 mm, cheliped 38.0 mm, chela 19.7 mm, dactyl 4.2 

 mm, ambulatory legs 21.8, 15.2, 13.3, and 11.8 mm, respectively. 



Color in life: See Garth (loc. cit.). 



Habitat: Sand bottom, often associated with shell, mud, nullipore, 

 and coral. 



Depth: 20-150 fathoms. 



Breeding: Ovigerous females were found at Tagus Cove, Albemarle 

 Island, Galapagos, in December, and northeast of Charles Island, Gala- 

 pagos, in February. 



Remarks: Although dredging was accomplished by the Velero III 

 in 1938 off Nuez Island, a satellite of Cocos Island, in 31-50 fathoms, 

 and at Chatham Bay, Cocos Island, in 40-70 fathoms, the type locality 

 failed to yield Euprognatha granulata as anticipated. All Hancock 

 expeditions specimens of Faxon's ornately decorated species were ob- 

 tained in the Galapagos Islands and have been previously reported. 



Since the published illustrations of the male (Garth, 1946, pi. 53) 

 did not include a figure of the first pleopod, opportunity is taken to 

 rectify the omission in the present report with Plate B, figure 9. The 

 photographed pair are from station 792-38. 



