488 BULLETIN 129", UNITED STATES NATIONAL MUSEUM 



Range. — Porto Rico ; Brazil, as far south as Bahia (Miers) . Shallow 

 water to 20 fathoms. 



Material examined. — 



Off Vieques, Porto Rico; February 10, 1899; Fish Eaivk: Cule- 

 brita lighthouse, NE. by N., 10 miles; 15 fathoms; Co.; temp. 26° 

 C; station 6091; 1 female (24214). Point Mula Lighthouse, E. by 

 N., lOM miles; 12i^ fathoms; Co.; temp. 27° C; station 6095; 1 

 male (24221). 



Off Cape St. Roque, Brazil; lat. 6° 59' 30" S.; long. 34° 47' 00'' 

 W.; 20 fathoms; brk. Sh.; 79° F.; station 2758, Albatross; 1 female 

 (21934). 



Genus MICROPHRYS Milne Edwards 



Microphrys Milne Edwards, Ann. Sci. Nat., ser. 3, Zool., vol. 16, 1851, p. 



251; type, M. weddelli Milne Edwards. 

 Milnia Stimpson, Ann. Lye. Nat. Hist. New York, vol. 7, 1860, p. 179; 



type, M. bicornutus (Latreille). 

 Omalacantha Streets, Proc. Acad. Nat. Sci. Philadelphia, ser. 3, vol. 1, 1871, 



p. 238; type, 0. hirsuta Streets = Jlf icrop/irys bicornutus (Latreille). 

 Eumilnia Kingsley, Proc. Boston Soc. Nat. Hist., vol. 20, 1879, p. 145; 



type, E. error Kingsley = M. platysoma Stimpson. Not Fisheria Lockington. 



Carapace broadly pyriform, somewhat depressed, dorsal surface 

 uneven and tuberculate or nodose, a small marginal spine or tubercle 

 at lateral angle of branchial region; preocular spine usually developed. 

 Orbits small, circular, with closed fissures. Eyes small. Rostral 

 horns moderate or small, divergent. Basal segment of antenna con- 

 siderably dilated, armed with a sizable spine at the antero-external 

 angle, which is visible in dorsal view; the movable segments of the 

 peduncle and the flagellum are not concealed by the rostrum. 



Merus of outer maxillipeds distally truncated, the antero-external 

 angle somewhat produced and rounded and the antero-internal angle 

 emarginate. 



Chelipeds larger than ambulatory legs, the palm compressed and 

 more or less enlarged. Fingers hollowed at tip and in the male 

 gaping. 



Legs diminishing rapidly in length from first to fourth pair, the 

 merus and carpus usually armed with spines; dactyli slightly curved. 



Abdomen of both sexes with seven separate segments. 



Restricted to America. 



KEY TO THE SPECIES OF THE GENUS MICKOPHRYS 



A^ Two spines on hepatic margin. Two large spines on margin of branchial 



region near lateral angle weddelli, p. 496. 



A^. Two spines lacking on hepatic margin. 



B^ No flattened, imbricated lobes on side walls of carapace. 



C^ A very prominent, oblong, oblique areole or nodule on anterior branchial 

 region. 



