BKACHYUEA FROM TOKKES STRAITS. 15 



distinct notch. Ortmann retains the species in the original genus '• weil die Antero- 

 lateralziihne iindeutiich sind." 



Locality. " Murray Island, reef." 



Distribution. Sulu Sea to New Caledonia. 



Plltjmnus cursor, a. Milne-Edwards. 



Pilumnus cursor, A. Milne-Edwards, N. Arch. Mus. ix. p. 244, pi. ix. fig. 4 (187.3) ; Miers, Hep. Voy. 

 ' Alert,' Crust, p. 223 ; De Man, Arch. Naturg. liii. (1) p. 29!) (1887) ; Alcock, Journ. Asiatic Soc. 

 Bengal, Ixvii. (2) p. 195 (1898). 



Three of our four specimens agree pretty closely with the descriptions of the aiitliors 

 cited above. They show some variation in the hairiness of the carapace : in two male 

 specimens the body is covered with a scanty short pubescence, u ith wjiich, near the front 

 margin, a few longer hairs are intermixed ; in a female individual, however, the lono 

 hairs are much more numerous imd extend further hack on the carapace. The hands 

 are ornamented with rows of tubercles, not qviite so thickly set as in Milne-Edwards's 

 figure, interspersed with short hairs. The legs are a little longer than in the figure, and 

 the merus of the first three pairs has a few spinules on its upper margin. 



One specimen, a male infested by a Pi,hizocephalan parasite, differs in certain points 

 from the others, but cannot, I think, be specifically separated from them. The outer 

 surface of the larger (right) chela is here for tlie most part quite smooth, with only a 

 few granules and hairs near the proximal end and along the upper margin, the groove 

 on the dactylus is represented by a line of punctations, the sub-hepatic tubercle is 

 wanting, and the ambulatory legs are even longer than in the more typical sj)ecimens. 

 In the armature of the cheliped this specimen resembles P. Audet^soni, De Man (Journ, 

 Linn. Soc, Zool. xvii. p. 59, pi. iii. figs. 5, 6), from which, however, it is distinguished 

 by the shape of the carapace, the antero-lateral margins being much shorter and the 

 postero-lateral more nearly parallel than in that species. 



Localities. " Murray Island, reef " ; " Channel between reefs, Mer." 



PiLTJMNUS PULCHER, Miers. 



Pilumnus pule her, Miers, Rep. Voy. 'Alert,' Crust, p. 219, pl. xxii. fig. A. 

 Actumnus pulcher , Ortmann, Semon's Forsch. Reise Austr., Crust, p. ^'Z (1894). 



The larger of our two specimens is only G mm., long, but it agrees pretty closely with 

 Miers's description and figiu-e and with the much larger type sjiecimens with which I 

 have compared it. The chief difference is the somewhat greater length of the legs ; in 

 Miers's specimens the penultimate leg is about as long as the greatest breadth of the 

 carapace, while in our larger specimen the carapace measures 6'5 mm. in breadth, and 

 the corresponding leg nearly 8 mm. in length. Ortmann has referred this species to 

 Actumnus, but the characters which he adduces hardly seem to justify its removal to that 

 genus. 



Locality. " ^lurray Island." 



