OXYSTOMATOUS AND ALLIED CRABS OF AMERICA IQ'J 



Genus PHILYRA Leach 



Philyra Leach, Zoological miscellany, vol. 3, p. 18, 1817 [type, P. scabriuscula 

 (Fabricius, 1798)'= ? Cancer cancellus Herbst, 1783]. 



Carapace usually circular and somewhat depressed, dorsal surface 

 generally bounded by a continuous beaded line; hepatic and branchial 

 regions usually fairly well defined. Front broad, truncate, the whole 

 or the greater part of the edge of buccal cavern being seen beyond it 

 in dorsal view. Buccal orifice transversely oblong, with anterior 

 angles broadly rounded; exognath broadly dilated, outer and anterior 

 borders formmg parts of one wide curve ; merus of endognath narrowly 

 and acutely triangular, length of inner border not much less than that 

 of the broad ischium. Orbits small and simken, with 2 sutures in 

 upper wall, and a hiatus at inner angle, where the minute antennal 

 flageilum stands; antennules folding transversely. CheHpeds sym- 

 metrical and, relatively to the legs, very massive; legs small. Abdo- 

 men of male consists of three or four pieces, that of the female of four. 

 (After Alcock.) 



With one exception, known only from the waters of the Eastern 



Hemisphere. 



PHILYRA PISUM De Haan 



Plate 47, Figures 1, 2 



Philyra pisum [pisun, by error] De Haan, Fauna Japonica, Crustacea, p. 131, 

 pi. 33, fig. 7, 1841 (type locality, Japan; type not located). — Bell, Trans. 

 Linn. Soc. London, vol. 21, p. 300, 1855.— Ortmann, Zool. Jahrb. (Abt. 

 Syst.), vol. 6, p. 682, pi. 26, fig. 16, 1892.— Calman, Ann. New York Acad. 

 Sci., vol. 11, p. 262, 1898. 



Diagnosis.— Front httle shorter than epistome; pterygostomian 

 region medially angulate; carapace granulate; chela of male exceeding 

 carapace by half its length; fingers with five longitudinal sulci, mner 

 margin denticulate. 



Description.— Length and breadth of male subequal, length greater 

 than breadth in female. A median carina of granulated tubercles on 

 gastric region; granules sparsely scattered on carapace, especially on 

 branchial and gastric regions. A raised granulate line on lateral and 

 posterior margins; posterior margin truncate in male, sHghtly arcuate 

 in female, terminating in obtuse angles. Front with shallow emar- 

 gination. Exognath finely granulate; sternum of male smooth except 

 on margins. CheHpeds minutely granulate, granules mterspersed 

 with short, smooth, transverse fines; margins coarsely granulate; 

 merus broadest at middle, almost smooth below. Segments 3-6 of 

 male fused, sutures not wholly obfiterated. 



Color. — Dark olivaceous. 



Measurements.— Ma\e (17564), length 22, breadth 22.3 mm; female 

 (17564), length 19, breadth 18.2 mm. 



i^an^e.— Japan; Korea; Philippines; Puget Sound, one specimen 

 (Caiman; whereabouts of specimen undetermmed). 



