45 



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

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

 the pleura of the 2"«i — 5''^ somites. Abdomen finely punctate. The peduncle of the inner antennae 

 projects, like in Miss R.\thbun"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 df. Ha.vn'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 Gruvkl, which was as large as that of 

 DE Haan. In front of the left s])ine 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 e.xopod of the outer ma.xillipeds reaches the middle of the 4''> or 

 merus-joint. 



The 2°"^' legs are the longest and e.xtend by their dactyli beyond the peduncle of the 

 outer antennae. 



Also as regards the colour, this specimen seems to agree with Miss R.a.thbun"s figure 

 of a Hawaiian animal. Panitl. loiigipcs (A. INI.-Edw.) from Zanzibar and Mauritius, with which 

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

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

 in his description of Paint/, /onoipcs (in: Nouv. Archives du Museum, Memoires, T. I\', p. 89) 

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

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

 that the transverse grooves on the abdominal terga of Panitl. Bitrgeri are described as inter- 

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



General distribution of the typical species: Japan (de Haax, Grcvel); Bay of 

 Tokyo (Ort\l\xx, Dofli;ix); Kochi (Ortmaxnj; Nagasaki (Balss); Aburatsubo (Balss); Simoda 

 (Stimpsox); Tamsui, North Formosa (Balss); Laysan (Lexz); Hawaiian Islands (Pi-efeer, RAXiiHfX). 



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



Palinitrus penicillatus A. G. Olivier, Encycl. Method. T. \'III, p. 674, 181 1. 



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



Palinurus (Panulirus) penicillatus E. J. Miers, in: Annals ^lag. Nat. Hist. 1S78, p. 410. 



Palinunis penicillatus G. PfetVer, Die Panzerkrebse und die Clypeastriden des Hamburger 



Museums, 1881, p. 34. 

 Sene.v penicillatus A. E. Ortmann, in: Zoolog. Jahrb. Abth. f. Syst. \'I, 1S91, p. 2S. 

 Panulirus penicillatus G. Nobili, in: Annal. Scienc. Nat. gi-' Serie. Zool. I\', 1906, p. 88. 

 Panulirus penicillatus M. J. Ralhbun. The Brachyura and Macrura of tlie 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. i'^ and in: General Catalogue of South .\fiican Crustacea. London, 1910, p. 374. 



