54 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 21 



3. Eucinetops lucasi, male (Tiburon Island, Gulf of California), chela, x 6.5. 



row of hooked hairs along their anterior margins, dactyli strongly curved, 

 tips corneous. 



Male abdomen composed of seven free segments, the last triangular, 

 tip rounded. Male pleopod 1 with a transparent lateral projection 

 extended terminally to oppose the sharply pointed tip. (Plate B, fig. 4) 



Female similar to male except for undeveloped chelipeds and shorter 

 legs. 



Material examined: 47 specimens from 20 Hancock expeditions 

 stations, all in the Gulf of California. (See Table 3) These range from 

 Angel de la Guarda Island to Cabeza Ballena, Lower California. In 

 addition, one specimen from Cholla Bay and three specimens from 

 Cholla Point, Sonora, Mexico, collected by B. W. Halstead and S. A. 

 Glassell, respectively; 30 specimens from Agua Dulce Bay, Tiburon 

 Island, collected by W. N. Smith, II ; and one specimen each from 

 Bahia de Bocochibampo, Sonora, and Bahia de la Paz, collected by E. 

 Yale Dawson. 



Measurements: Male neotype, length 11.0 mm, width 8.1 mm, 

 rostrum 1.8 mm, width 2.3 mm, cheliped 11.4 mm, chela 6.0 mm, 

 dactyl 3.0 mm, height of palm 3.4 mm, ambulatory legs 12.2, 9.4, 8.0, 

 and 6.9 mm, respectively. Female: length 12.5 mm, width 9.8 mm. 



Color in life: Not recorded. Crane (1937, p. 54) notes a conspicuous 

 banding and marbling of both chelipeds and ambulatory legs in alcoholic 

 specimens. 



Habitat: On sandy bottom with weed. (Crane) Associated with 

 the hatchet clam Pinna. (Steinbeck and Ricketts) Velero III and Velero 

 IV specimens were obtained most frequently from shore collecting on 

 rocky substratum, and on two occasions were cracked from heads of 



