416 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL.21 



The inner branchial spine pointing upward, outward, and backward ; 

 the posterolateral spine pointing slightly backward in a horizontal plane. 

 Anterior half of carapace including rostrum sloping steeply downward 

 from the gastric spine ; horns short, acute, and widely divergent. . . . 

 Orbits turned outward and a little forward ; upper and lower margins 

 deeply incised, anterior and posterior teeth acute . . . Subhepatic spine, 

 not visible in dorsal view, directed downward and a little outward. 



On the basal antennal segment, outside the insertion of the next seg- 

 ment, a slender-pointed spine not visible from above, on account of the 

 inclination of the front. On the ventral surface of the carapace, just out- 

 side the posteroexternal angle of the basal segment, a small spine and 

 behind it a spine at the angle of the buccal cavity. These three spines in 

 the same longitudinal line. 



Arm of the cheliped having a slender spine at either end of the 

 outer margin; wrist rough with small, low tubercles. (Rathbun, 1925, 

 modified) 



Material examined: None. A very young specimen so labeled by 

 Rathbun from among Schmitt Ecuadorean material proved to be a Micro- 

 phrys with a "heptacanth" sponge covering. 



Measurements: Bell's male type measured 38 by 43 mm, a young 

 female measured by Rathbun 10.6 by 10.6 mm. 



Color in life: Unknown. In preservative the color is light brown, 

 covered with darker hair; the chelipeds reddish. (Bell) 



Habitat: On sand. (Bell) Rocky; gray sand and broken shell. 

 (Rathbun) 



Depth: 13 to 31 fathoms. 



Remarks: Rathbun (1925, p. 473) calls attention to the discrepancy 

 between the two small specimens at hand and Bell's figure, which shows 

 a good-sized marginal hepatic spine not mentioned in his description. 

 This may represent only the difference between young and adult, or it 

 may be a distortion in perspective of the subhepatic spine alluded to by 

 Rathbun in the above description. 



Macrocoeloma villosum (Bell) 

 Plate Y, Fig. 5 ; Plate 46, Fig. 2 



Pericera villosa Bell, 1835b, p. 173; 1836, p. 59, pi. 12, figs. 4, 4k-n. 



A. Milne Edwards, 1875, p. 59. Nobili, 1901, p. 30. 

 Pericera fossata Stimpson, 1860b, p. 181 ; type locality, Cape San Lucas, 



Lower California, Mexico; female holotype not extant. A. Milne 



Edwards, 1873b, p. 53. Bouvier, 1895, p. 7. 



