156 



legs short and stout, heavily fringed, especially propodites of 



last pair of legs ■ ■ ^- ^^'^'f^i" (^e Haan) ') 



Carapace and legs naked 2 



2. Inner angle of wrist of cheliped with two spines 3 



Inner angle of wrist with only one spine 4 



3. Carapace granulate anteriorly, front notched in the middle, epi- 



gastric lobes distinct, gastric and anterior branchial regions 

 with transverse ridges. Ambulatory legs about twice the length 

 of carapace, mero-, carpo- and propodite roughly granulate 



at anterior margin P- heterochcir (Studer) -) 



Carapace smooth, finely frosted, front grooved, but not notched 

 in the middle, no epigastric lobes. Ambulatory legs slender, 

 penultimate pair about three times the length of carapace, not 

 granulate at anterior margin P- americana Rathbun ^) 



4. Both epibranchial teeth behind ext. orb. angle prominent, acute 



and of equal size P- abyssicola Miers 



Anterior epibranchial tooth small and blunt, ne.Kt one strong, 

 spiniform 5 



5. Inner angle of wrist of cheliped prominent, acute, in the middle 



of inner surface of palm one obtuse tubercle. Propodite of last 



pair of ambulatory legs somewhat depressed and flattened. . P. glaberriina Orlmann *) 

 Inner angle of wrist subrectangular. Ambulatory legs slender, 

 second pair more than twice the length of carapace ; propodites 

 of last pair not flattened ' P. cooki Rathbun ') 



1. Pihiimioplax abyssicola Miers. 



1886. Pilumnoplax abyssicola Miers. Rep. "Challenger", Brachyura, p. 22S, pi. 19, f. 2. 



Stat. 139. o°n'S., 127° 25' E. Between Kajoa Island and Batjan. Depth 397 in. t cf- 

 Stat. 266. 5°56'.5S., I32°47'.7 E. South-east of Kei Islands. Depth 595 m. 1 c? JiJV. , 

 Stat. 267. 5°54'S., I32°56'.7E. South east of Kei Islands. Depth 984 in. i cf- 



This interesting species has been well described and figured by Miers, so that a long 

 description is useless. According to Miers the carapace is closely granulate and pubescent near 

 the margins, in the specimens at hand, however, the carapace is not granulate, but densely 



1) Cancer (Curlonoliis) mstilus de Haan, Faun. Japon., Crust., 1835, p. 51, pi. 5, f . 3 ; Carcinoplax vesli/iis H.Milne-Edwards, 

 Ann. Sc. Nat. (3), t. 18, 1852, p. 164; Pilumnoplax vcstita Ortminn, Zool. Jahrb., Syst., Bd 7, 1S94, p. 687; Carcinoplax vcstita Rathbun, 

 I'roc. U.S. Nat. Mus., v. 26, 1903, p. 24. Hab. Japan. 



2) Literature and description: Miers, Rep. "Challenger", Brachyura, 18S6, p. 227, pi. 19, f. i; Doflein, Wiss. Erg. "Valdivia", 

 Bd 6, Brachyura, 1904, p. 119; Stebbing, Transact. Roy. Soc. Edinburgh, v. 50, prt 2, 1914, p. 265. Hab. Southern parts of Atlantic 

 and Indian Ocean, in depths from 75 tot 375 fathoms. 



3) Literature and description: Doflein, I.e., p. 120, pi. 35, f. 3 — 4. Hab. Atlantic coast of North .\merica. coast of Travancore 

 (British Judia), west coasl of Sumatra, in depths varying from 80 to 440 fathoms. 



4) Zool. Jahrb., Syst., Bd 7, 1894, p. 6S7, pi. 23, f. 2. Hab. Japan, depth unknown. 



5) Bull. U.S. Fish Comm. for 1903, v. 23, prt 3, 1906, p. 835, pi. 7, f. 3. Hab. Hawaiian Islands, in 256—330 fathoms. 



S 



