1921] Schmitt: The Marine Decapod Crustacea of California 33 
Acanthephyra curtirostris Wood-Mason 
Acanthephyra curtirostris Wood-Mason, Ann. Mag. Nat. Hist. (6), 7, 195, 
1891; 9, 364, fig. 5, 1892; Illus. Zool. ‘‘Investigator,’’ Crustacea, pl. 3, 
fig. 4, 1892; Faxon, Mem. Mus. Comp. Zool., 18, 164, pl. 43, figs. 2-5, 
1895; Rathbun, H. A. E., 10, 27, 1904. 
Fig. 19. Acanthephyra curtirostris, 3, lateral view of carapace (after Faxon). 
Characters.—Carapace and rostrum less than half as long as the abdomen; 
carapace not distinctly carinated behind the gastric region. Rostrum a very thin, 
high, obliquely ascendant frontal crest, the acuminate peak of which does not 
exceed the antennular peduncle; armed above with seven to nine teeth, and below 
with one or, more rarely, two spines at or before the middle of the ventral border; 
occasionally the ventral tooth is obsolescent or but obscurely indicated. Second 
to sixth abdominal segments, inclusive, sharply carinate; each carina ends in a 
small tooth, that on the third segment being the larger, while that on the second 
and frequently also that on the sixth is scarcely defined; sixth segment more than 
half again as long as the fifth. 
Dimensions.—Type, male: length from tip of rostrum to end of telson 85 mm. 
Color.—In life crimson (Alcock). 
Type LocalityBay of Bengal, 840 fathoms (‘‘Investigator’’ station 100). 
Distribution.—Arabian Sea, 937 to 1043 fathoms; Bay of Bengal, 364 to 913 
fathoms; Andaman Sea, 922 fathoms (Alcock). From off San Clemente Island, 
California, to off Gulf of Panama, 485 to 2232 fathoms. 
Genus Hymenodora Sars 
Body almost round, not compressed; carapace only compressed in dorsal part, 
forming a sharp, high, median keel. Rostrum usually short, rarely long, armed 
with teeth above only. Endopodite of first maxillipeds composed of only two 
segments; the two inner distal lobes of the second maxilla rather broad and not 
projecting beyond the basal lobe. Abdomen not carinate. Eggs usually of con- 
siderable size. 
