348 "ENDEAVOUR" SOIFXTIFIO RESULTS. 



original description of the sternal armature, and the 

 arrangement of the spines at the bases of the legs of 

 P. stebbingi also fit Balss's figure very nicely. It is to 

 be regretted that Balss did not otherwise characterise 

 his juvenile mogiensis females. 



Genus TRACHYPENEUS, Alcock. 

 TRACHYPENEUS ANCHORALIS (Bate}. 

 (Plate Ixii., figs. 1-3. Plate Ixviii., fig. 3.) 



Pcnteus anchoralis, Bate, Ann. Mag. Nat. Hist. (5), viii., 

 1881, p. 181, and "Challenger" Kept. Zool. xxiv., 

 Macrura, 1888, p. 258, pi. xxxv., fig. 1 (part: only 

 female from the Arafura Sea). Not the T. anchoralis 

 of other authors. 



Occurrence. 7 miles N.N.E. of Bowen, Queensland, 

 16 fathoms; one male, one female (Reg. No. P.3528), 

 and three females (Reg. No. E.6618). 



12 miles N.N.E. of Bowen, Queensland,' 19-25 

 fathoms; six females (Reg. Nos. E.6611 and E.6615). 



Distribution. Otherwise knoAvu only from the type 

 locality: Arafura Sea, south of Papua, 28 fathoms 

 ("Challenger" Sta. 188, lat. 9 59' S., long. 139 42' E.). 



Description. Of female: rostrum usually distinctly 

 recurved or bent upward distally; occasionally, however, 

 quite straight and tilted, but little above the line of 

 the dorsum of the carapace; armed above with eight 

 to nine teeth not counting the isolated epigastric tooth; 

 post-rostral carina usually quite distinct, especially so 

 in younger specimens, tending, however, in older speci- 

 mens to become broader and less distinct toward the 

 posterior margin of the carapace which it very nearly 

 reaches. 



Carapace otherwise very much as described by 

 Alcock 39 for his T. asper, except that there is a faint 

 indication of what appears to be the lower end of a 

 short cervical groove on either side, and that the antero- 

 lateral angle is blunt, and not "distinctly dentiform." 

 Tn fact, all the Pacific representatives of this genus, 



39 Cat. Indian Decapod Crust., 1906, pt. iii., fasc. i., p. 43, pi. ix., 

 fig. 28, 28a, b. 



