306 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 21 



Herbstia edwardsi Bell 

 Plate S, Fig. 2 



Herbstia edwardsii Bell, 1835b, p. 170; 1836, p. 46, pi. 9, fig. 3, 3g-i. 

 A. Milne Edwards, 1875, p. 80. Rathbun, 1910, p. 573; 1925, p. 

 300, pi. 105, figs. 3, 4; pi. 240, figs. 1-4. Boone, 1927, p. 145, 

 fig. 42. Finnegan, 1931, p. 623. Sivertsen, 1933, p. 11. Huh, 1938, 

 p. 11. Garth, 1946, p. 381, pi. 65, figs. 1, 2. 

 Herbstiella edwardsii, Stimpson, 1871a, p. 93. 

 Herbstia (Herbstiella) edwardsii, Miers, 1886, p. 49. 



Type: Male, length 14.8 mm, width 12.7 mm, and female, cotypes, 

 originally deposited in the Museum of the Zoological Society [London], 

 and the Bell Museum, respectively, no longer extant. 



Type locality: Galapagos Islands, 6 fathoms, coral sand; Hugh 

 Cuming, collector. 



Localities subsequently reported, with collectors: Galapagos Islands: 

 James Island, Hassler (Rathbun, 1925) ; Hood Island, A returns 

 (Boone); Albemarle Island, St. George (Finnegan); Charles Island, 

 Wollebaek (Sivertsen); Indefatigable Island, Rolf Blomberg (Hult) ; 

 the above localities plus Duncan, Tower, South Seymour, and Barring- 

 ton Islands, Velcro III (Garth). 



Atlantic analogue: None. A Galapagos endemic species. 

 Diagnosis: Basal antennal article with two outer marginal spines 

 including anteroexternal spine ; first movable article of antenna reaching 

 nearly to tip of rostrum. Movable finger of male with two teeth in gape ; 

 palm smooth. Chelipeds of adult male exceeding ambulatory legs in 

 length, ambulatory legs spinulous. Male first pleopod with tip slender 

 and recurving as in Herbstia camptacantha, but with setiferous fold 

 more strongly protuberant. 



Description: Carapace broadly rounded posteriorly, narrowing 

 slightly anterior to cervical groove, surface punctate, regions distinct but 

 not elevated, tuberculate, and obscurely pubescent. Rostrum small, com- 

 posed of two depressed, triangular teeth separated by a narrow V reach- 

 ing nearly to their bases. Orbits lying considerably laterad of rostral 

 horns, external antennal spine and entire antennal flagellum exposed in 

 intervening hiatus. Preorbital spine blunt, suberect, prominent, inter- 

 orbital spine truncate, dentiform, exorbital spine acute and internally 

 excavate to provide lodgment for the retracted cornea. 



Six or seven prominent lateral marginal spines, the first and largest 

 hepatic; of the remaining five or six the last postbranchial ; numerous 



