45 



uninterrupted. Anterior margin of the pleura of the 2 nd somite slightly curved, that of the four 

 following strongly arcuate, entire, unarmed; there is an acute tooth, posteriorly, at the base of 

 the pleura of the 2 nd — 5 th somites. Abdomen finely punctate. The peduncle of the inner antennae 

 projects, like in Miss Rathbun's figure, beyond that of the outer still only by its terminal joint. 



The two principal spines on the antennular segment diverge slightly at the tips and are 

 a little more than one and a half as long as the distance between their tips; they present a 

 somewhat more slender shape than in de Haan's figure, namely the same form as in Gruvel's 

 Figure i, being only half as thick at their base as long, owing perhaps to the young age of 

 this specimen — I say, perhaps, because not only de Haan's specimen was much longer, 

 viz. 13" = 335 mm., but also the specimen, figured by Gruvel, which was as large as that of 

 de Haan. In front of the left spine are situated 2 or 3, in front of the right 1 or 2 small, 

 acute tubercles, that are placed more laterally, and one observes a small acute granule just 

 behind the left spine; for the rest the antennular segment appears unarmed and smooth. 



The flagellum of the exopod of the outer maxillipeds reaches the middle of the 4 th or 

 merus-joint. 



The 2 nd legs are the longest and extend by their dactyli beyond the peduncle of the 

 outer antennae. 



Also as regards the colour, this specimen seems to agree with Miss Rathbun's figure 

 of a Hawaiian animal. Panul. longipes (A. M.-Edw.) from Zanzibar and Mauritius, with which 

 Panul. femoristriga (von Mart.) from Amboina is said to be identical, must be regarded, at 

 the utmost, as a local indian variety of de Haan's species. It appears indeed rather queer that 

 in his description of Panul. longipes (in : Nouv. Archives du Muséum, Mémoires, T. IV, p. 89) 

 A. Milne-Edwards has made no mention at all, among the species with which it is compared, 

 of Panul. japonicus which, as a matter of fact, is the most closely allied form, and furthermore 

 that the transverse grooves on the abdominal terga of Panul. Burgeri are described as inter- 

 rupted, while in de Haan's figure of this species the furrows appear distinctly continuous! 



General distribution of the typical species: Japan (de Haan, Gruvel); Bay of 

 Tokyo (Ortmann, Doflein) ; Kochi (Ortmann) ; Nagasaki (Balss) ; Aburatsubo (Balss) ; Simoda 

 (Stimpson); Tamsui, North Formosa (Balss) ; Laysan (Lenz); Hawaiian Islands (Pfeffer, Rathbun). 



2. Panulirus penicillatus (Oliv.). (PI. II, Fig. 6). 



Paliiiunts penicillatus A. G. Olivier, Encycl. Méthod. T. VIII, p. 674, 181 1. 



Palinurus penicillatus H. Milne-Edwards, Hist. Nat. Crust. II, 1837, p. 299. 



Palinurus (Panulirus) penicillatus E. J. Miers, in: Annals Mag. Nat. Hist. 1878, p. 410. 



Palinurus penicillatus G. Pfefler, Uie Panzerkrebse und die Clypeastriden des Hamburger 



Museums, 188 1, p. 34. 

 Senex penicillatus A. E. Ortmann, in: Zoolog. Jahrb. Abtli. f. Syst. VI, 1891, p. 28. 

 Panulirus penicillatus G. Nobili, in: Annal. Scienc. Nat. 9e Série. Zool. IV, 1906, p. 88. 

 Panulirus penicillatus M. J. Rathbun, The Brachyura and Macrura of the Hawaiian Islands. 



Wash. 1906, p. 897. 

 Panulirus penicillatus G. Nobili, Ricerche sui Crostacei della Polinesia, Torino, 1907, p. 366(16). 

 Panulirus penicillatus Th. R. R. Stebbing, South African Crustacea, Part IV, Cape Town, 



1908, p. 11 and in: General Catalogue of South African Crustacea, London, 1910, p. 374. 



