464 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 21 



Chelipeds [long] ; merus with the angles denticulated, the anterior 

 edge bearing several rough teeth; carpus with the angles denticulated, 

 the outer margin acute and dentate; hand longer than the merus, the 

 margins denticulated, the upper margin upturned near the end; pollex 

 nearly longitudinal and almost straight, the inner margin dentate ; dactyl 

 curved and provided on the external portion of the base with two con- 

 verging, denticulated ridges meeting and forming a crest on the distal 

 portion. Ambulatory legs smooth, compressed, and subequal in length; 

 dactyls slender, lanceolate, longer than the propodi, and flattened in a 

 plane at right angles to that of the preceding [articles]. (Holmes, modi- 

 fied, of a specimen from Guaymas, U.S.N.M.) 



Transverse elements of the first three segments of the abdomen finely 

 denticulate and produced at the extremities in a tooth. (Rath bun, 1925) 



Material examined: 12 specimens from 6 stations, including one 

 Askoy station. (See Table 102) From off Point Tosco, Lower California, 

 Mexico, to Salango Island, Ecuador. 



Measurements: Largest specimen, male: length 19.0 mm, width 

 including spines 25.0 mm, rostrum 0.1 mm, width 0.6 mm, cheliped 52.0 

 mm, merus 21.0 mm, manus 25.0 mm, dactylus 8.4 mm, height of palm 

 5.7 mm. Female specimen: length 11.3 mm, width including spines 16.2 

 mm, rostrum 0.1 mm, width 1.8 mm, cheliped 24.9 mm, merus 9.3 mm, 

 manus 12.2 mm, dactylus 4.0 mm, height of palm 3.4 mm. 



Color in life: Not recorded. 



Habitat: Dredged twice in green mud, once in sand, and once in 

 rock with sand. 



Depth: 20-26.5 fathoms. (Garth) 12-45 fathoms. 



Size and sex: Males are from 6.5 to 19.0 mm, females from 6.6 to 

 11.3 mm, young from 4.3 mm. 



Breeding: None of the females is ovigerous. 



Remarks: With newly established perimeters of range at Point 

 Tosco, Lower California, and Salango Island, Ecuador, Leiolambrus 

 punctatissimus takes its rightful place as a tropical American west coast 

 species, as indeed its analogous position with L. nitidus of the Caribbean 

 would imply. The type locality, "California," already questioned by 

 Rathbun (1925), becomes extralimital and in all probability, erroneous, 

 with Lower California the most acceptable alternative. Lower Cali- 

 fornia, therefore, may be considered the corrected type locality. The 

 earlier reported Guaymas locality is not inconsistent with this analysis, 

 for while Guaymas, at 27° N latitude, lies considerable north of Pt. 

 Tosco at 24° N, Panamic species are known to advance much farther 

 up the Gulf of California than up the west coast of Lower California. 



