MACRURA. - SCHMITT. 333 



in typical intermedia, but, like in the variety anchista, 

 the anterior spinule is only half as long as the posterior. 

 In Pen. ensis, finally, the peraeopods of the 1st pair are 

 also bispinose. (These characters of Pen. ensis were 

 communicated to me by Dr. Horst of the Leiden Natural 

 History Museum, who kindly did examine the only still 

 existing type specimens of this species)." His P. inter- 

 media, variety anchista I have not seen. 



Though P. endeavour! has the pereiopods of the first 

 pair bispinose, and the rostrum a little more ascendant 

 than P. intermedius, I am disinclined to identify it with 

 P. ensis as characterized by de Man, without knowing 

 more about the sexual organs of that species. I should 

 hardly designate the central non-pubescent patch on the 

 dorsum of the second abdominal somite as a crest, nor 

 any of the bare intervals between the lateral pubescent 

 areas of the carapace as an "obtuse crest which from the 

 hepatic spine runs backward to the posterior margin of 

 the carapace." 



P. cognatux, also a very pubescent species, differs in 

 having all the abdominal segments carinated. Further, 

 the postocular (orbital) tooth is an insignificant blunt 

 angle in P. cndearouri, but is said to be spiniform in 

 P. cognatus, and the antero-latefal angle of the carapace, 

 which is sharp in the latter, is rounded in P. endeavouri. 

 The thelycum, too, as described by Nobili, seems to have 

 a different form. 



Apart from the number of their rostral teeth, which 

 in P. stebbingi is 8-10 and in P. macleayi 5-7, both these 

 species differ from P. endeavouri in that the postrostral 

 carina* does not extend backward on to the posterior 

 third of the carapace. Furthermore, both these species 

 are much less pubescent than P. endeavouri . 



PEN.EOPSIS MACLEAYI 



(Plate lx., figs. 1-5.) 



Pena'us macleayi Haswell, Proc. Linn. Soc. X. S. Wales 

 iv., 1, 1879, p. 40, and Cat. Austr. Crust., 1882, p. 210. 

 Id. Ogilby, Ed. Fish, and Crust. N. S. Wales, 189:5, 

 p. 204. Id. Whitelegge, Mem. Austr. Mus. iv., 2, 1900. 

 p. 197. 



Metapcneus macleayi Alcock, Cat. Indian Decapod Crust., 

 pt. iii., fasc. 1, 1906, p. 17. 



