PART 1 GARTH : PACIFIC OXYRHYNCHA 385 



Habitat: Intertidal, on rocky shore; when dredged, on sand or shell 

 bottom. 



Depth: Shore to 10 fathoms. 



Size and sex: Males in the combined series are from 4.7 to 18.6 mm, 

 females from 6.3 to 16.1 mm, ovigerous females from 7.3 to 16.1 mm. 



Breeding: Ovigerous females were encountered by the Velero III 

 in January and February, and by W. L. Schmitt in October, when 22 

 of 24 females from one station were found to be gravid. 



Remarks: The range of the species has been extended southward to 

 Independencia Bay and northward to Zorritos Light, Peru. (See also 

 Remarks under the preceding Teleophrys cristulipes.) 



Genus MIGROPHRYS Milne Edwards 



Microphrys Milne Edwards, 1851, p. 251. A. Milne Edwards, 1875, 



p. 59. Rathbun, 1925, p. 488. 

 Milnia Stimpson, 1860b, p. 179; type: Pisa bicornuta Latreille, 1825 



= Microphrys bicornutus (Latreille), by original designation. 

 Omalacantha Streets, 1871, p. 238; type: O. hirsuta Streets, 1871 = 



Microphrys bicornutus (Latreille), by monotypy. 

 Eumilnia Kingsley, 1879a, p. 145; type: Microphrys error Kingsley, 

 \879=Microphrys platysoma Stimpson, by monotypy. 



Type: Microphrys weddelli Milne Edwards, type of Microphrys 

 Milne Edwards by subsequent designation of Milne Edwards (1851, 

 p. 291). 



Description: 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 de- 

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

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

 ably dilated, armed with a sizable spine at the anteroexternal angle, 

 visible in dorsal view ; the movable segments of the peduncle and of the 

 flagellum not concealed by the rostrum. Merus of outer maxillipeds 

 distally truncated, the anteroexternal angle somewhat produced and 

 rounded and the anterointernal 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. (Rathbun, 

 1925) 



