126 University of California Publications in Zoology [Vol, 23 



Type Locality. — Off Point Loma, San Diego, California ("Albatross" station 

 4304), 25 fathoms. 



Distribution. — Monterey to off San Diego, California, and San Geronimo 

 Island, Lower California, to a depth of 32 fathoms. 



Memories.— Differs from P. perrieri Bouvier (Bull. Mus. d'Hist. Nat., p. 7, 

 1895) in having the eye scales toothed or incised and not entire, longer antennular 

 peduncles, which exceed the eye-stalks instead of falling considerably short of 

 them, and in having the antennal flagella well haired beneath instead of sparsely 

 so. This species is named after Dr. Albert B. Ulrey, Director of the Venice 

 Marine Biological Station, Venice, California. 



Genus Dardanus Paulson 



Chelipeds with few exceptions dissimilar and unequal, the left being much the 

 larger; the finger tips are corneous and blackened and somewhat spooned, especially 

 those of the smaller hand. The fourth pair of legs subchelate. External maxilli- 

 peds approximated at the base. No paired appendages on the anterior abdominal 

 segments of either sex. 



Dardanus jordani sp. nov. 



Plate 17, figures 3 and 4 



Description. — Carapace depressed, greatest width across branchial regions about 

 five-sixths the length measured on the median line, sparsely setose, tufts of hairs 

 occurring principally on the antero-lateral margins; median sinuosity of front 

 exceeded by the acutely tipped lateral projections, and itself medially very slightly 

 concave. 



The eye-stalks, which slightly exceed the antennular peduncle, are dorsally 

 somewhat flattened and are slightly shorter than the frontal border of the cara- 

 pace; measured from the anterior margin of the carapace, their length is slightly 

 greater than the width and about as long as the anterior portion of the carapace; 

 the corneae occupy a little more than one-fourth the length of the stalk; the inner 

 anterior margin of the eye scale is incised, forming four or five small teeth, the 

 outermost of which are but mere granulations of the margin. 



Chelipeds and legs rather setose toward distal extremities, sparsely so prox- 

 imally, and well provided with spines on upper and outer faces of dactylar and 

 propodal joints, carpal joints with but comparatively few spines; spines of inner 

 margin of hands and carpal joints of chelipeds stronger than the rest. Hand of 

 large cheliped about twice as long as greatest width, outer margin somewhat 

 concave just below level of bases of fingers (more so than shown in plate 17, 

 fig. 4, owing to slightly oblique presentation of the hand in photographing) ; 

 fingers about one-fifth shorter than rest of hand ; carpus except for the distal third 

 (distal half, measured on outer margin) of its length but little more than two-thirds 

 the width of the hand, but in that portion widening abruptly to form a shelf -like 

 offset toward its antero-external angle to accommodate the width of the proximal 

 margin of the hand. This feature is not well shown in the plate cited, for the 

 reason given above; the offset actually occupies nearly a third of the distal 

 margin of the carpus. Small hand, about two and one-sixth times as long as wide, 

 similar to but narrower than the large hand, outer margin of hand also concave 

 but more evenly so from base to tip; fingers one-sixth longer than the palm, and 

 gaping slightly throughout their entire length except for the black corneous tips. 



