FISHERY BULLETIN: VOL. 85, NO. 2 



sharp-edged arc. Anterolateral carina ab- 

 sent. Posterior part of hepatic sulcus fusing 

 with branchiocardiac sulcus and continuing 

 posteroventrally oblique to latter 2 



2. Optic calathus long, mesial margin at least 

 1.5 width of distal extremity. Pereopods 

 covered with minute setae P. sibogae 



Optic calathus short or relatively so, mesial 

 margin 1.3 or less width of distal extremity. 

 Pereopods not covered with setae 3 



3. Thelycum with median plate of sternite XIII 

 very long (length more than 4 times basal 

 vddth), almost reaching spine on sternite XII, 

 and narrow, maximum width 0.40 length. 

 [Males unknown] P. protensus 



Thelycum with median plate of sternite XIII 

 relatively short (length less than 3.5 times 

 basal width) and broad or relatively broad, 

 maximum width more than 0.40 length. ... 4 



4. Third article of antennular peduncle expand- 

 ed laterally, forming strong, subtriangular 

 projection in males and variably developed 

 rounded prominence in females. Petasma 

 with ventral costa neither strongly inclined 

 distomesially nor contracted preapically. 

 Thelycum with median plate of sternite XIII 

 moderately broad (maximum width 0.65-0.75 

 length) and lacking posterolateral promi- 

 nences P. kathleenae 



Third article of antennular peduncle not ex- 

 panded laterally, forming neither strong 

 prominence in males nor rounded promi- 

 nence in females. Petasma with ventral costa 

 strongly inclined distomesially or contracted 

 preapically. Thelycum with median plate of 

 sternite XIII either relatively narrow (max- 

 imum width 0.45-0.55 length) or, if broad 

 (0.80-0.93), bearing posterolateral promi- 

 nances 5 



5. Males with ventral antennular flagellum 

 sinuous proximally and bearing narrow band 

 of densely set small setae distal to dorsal 

 flagellum; petasma with ventral costa 

 markedly contracted preapically. Females 

 with median plate of sternite XIII expanded 

 in pair of conspicuous posterolateral promi- 

 nences P. gracilis 



Males with ventral antennular flagellum 

 straight proximally and lacking band of small 

 setae; petasma with ventral costa not 

 markedly contracted preapically. Females 

 with median plate of sternite XIII lacking 

 posterolateral prominences P. crassipes 



Pseudaristeus kathleenae, new species 



Figures 1-3, 4C, 5-9 



Aristaeus crassipes. Alcock 1901a:50 [part]. 

 Hemipenaeus crassipes. De Man 1911:24. Kemp 



and Seymour Sewell 1912:17 [part], pi. 1, fig. 8. 



De Man 1913, pi. 2, fig. 4a-c and in legend to fig. 



5 [under Remarks for H. sibogae]. Balss 1925:229 



[part]. 



Materials. 



Holotype: o-, USNM 216710, 23.5 mm CL, 6.5 

 mm RL, about 88 mm TL; type-locality: Teluk 

 Bone, Sulawesi (Celebes), Indonesia; 3°19'40"S, 

 120°36'30"E; 900 m; gray mud; 19 December 1909; 

 Albatross stn 5657. 



Paratypes: India-1 9, USNM 216711, collected 

 with holotype. Ict, ZSI 7806/10, W of Cape Com- 

 orin, Tamil Nadu, India; 7°46'N, 76°37'E; 1,225 m; 

 26 April 1911; Investigator stn 388. 2 o-, ZSI, S of 

 Cape Comorin, Tamil Nadu, India; 7°36'N, 78°05'E; 

 556-595 m; 10 April 1900; Investigator stn 268. 



Indonesia-1 9, ZMB, off W Sumatra; 0°39'S, 

 98°52'E; 750 m; 31 January 1899; Valdivia stn 

 191. 1 CT, ZMA, eastern Flores Sea; 7°24'00"S, 

 118°15'12"E; 794 m; fine gray mud, with some 

 radiolariae and diatomes; 6 April 1899; Siboga stn 

 45. 19, USNM, Teluk Bone, Sulawesi (Celebes); 

 3°17'40"S, 120°36'45"E; 885 m; gray mud; 19 

 December 1909; Albatross stn 5656. 3 9, USNM, 

 Teluk Bone, Sulawesi (Celebes); 3°32'40"S, 

 120°31'30"E; 933 m; gray mud; 19 December 1909; 

 Albatross stn 5658. 1 9, USNM, W of Halmahera; 

 0°35'00"N, 127°14'40"N, 127°14'40"E; 795 m; fine 

 gray sand, mud; 27 November 1909; Albatross stn 

 5619. 



Philippines— 2 9, USNM, Cagayan Is, Sulu Sea; 

 9°38'30"N, 121°ir00"E; 929 m; gray mud, coral 

 sand; 31 March 1909; Albatross stn 5423. 1 ct 1 9, 

 USNM, Lagonoy Gulf, E of southern Luzon; 

 13°32'30"N, 123°58'06"E; 1,033 m; gray mud; 10 

 June 1909; Albatross stn 5460. 1 9, USNM, 

 Lagonoy Gulf, E of southern Luzon; 13°40'57"N, 

 123°57'45"E; (549 m); sand; 16 June 1909; Albatross 



314 



