. Bulletin - United States National Museum. Science. 152 BULLETIN 97, UNITED STATES NATIONAL MUSEUM. a o $ Fig. 93. — IMxnixa CH AETOl'TEKANA, BizzAKUS Bay. a. Chela of addlt female, x g : 6, chela of MALE, X 4. (AFTEE Faxox.) Diagnosis.—Carapace uneven. Two short ridges on cardiac region. Fingers of male widely gaping. Dactyli of first two legs slightly curved, of last two straight. Description of male.—Surface densely pubescent and hairy, espe- cially on chelipeds and margins of carapace and legs. Eegions and their subdivisions well limited; subbranchial re- gion advanced, forming a p
. Bulletin - United States National Museum. Science. 152 BULLETIN 97, UNITED STATES NATIONAL MUSEUM. a o $ Fig. 93. — IMxnixa CH AETOl'TEKANA, BizzAKUS Bay. a. Chela of addlt female, x g : 6, chela of MALE, X 4. (AFTEE Faxox.) Diagnosis.—Carapace uneven. Two short ridges on cardiac region. Fingers of male widely gaping. Dactyli of first two legs slightly curved, of last two straight. Description of male.—Surface densely pubescent and hairy, espe- cially on chelipeds and margins of carapace and legs. Eegions and their subdivisions well limited; subbranchial re- gion advanced, forming a prominent shoulder with granulated edge; lateral angle a right angle; a submarginal groove parallel to posterior and postero-lateral margins; on each side of cardiac region a short sharp ridge arched upward; a few granules on antero-lateral margin; front little advanced, truncate. Chelipeds strong, smooth; palm very wide, con- vex on margins except near base of fixed finger, which is very short, much deflexed, with a strong, triangular, prehensile tooth near its base and an obliquely truncate, notched tip; dactylus strongly curved, almost vertical and forming an oval gape when closed. Dactyli of first two legs slender and slightly curved, of last two, stout and nearly straight; first and second legs slender and of nearly same size, second reaching to end of propodus of third; third stout, merus about twice as long as wide, nearly straight above, dis- tally narrowed, pos- terior margin, as well as that of pro- podus, spinulous; fourth leg of similar build, reaching to middle of carpus of third. Sixth segment of abdomen constricted at middle, seventh Fio. 94.—Pinmxa chaetopteraxa (5043). a, Odter MAXiL- • • 1 LirED OF FEMALE, X 11 ', h, ADDOMEX OF MALE, X G8. semicircular. Sexual valuation.—Carapace more swollen in female, fingers mod- erately deflexed, not gaping, thumb longer and stouter, a small tooth at each end of truncate extremity, no subbasal tooth, a small t
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