STUDIES IN AUSTRALIAN CRUSTACEA— McCULLOCH. 309 



From L. natator, M. Edw., to which this species is closely 

 allied, it is distinguished by the different proportions of the 

 joints of the second pair of legs and in having a greater number 

 of joints in the thickened antennular flagellum. 



Leamder intermedius, Stimpson. 



(Plate lxxxix., figs. 13-14.) 



Leander intermedius, Stimpson, Proc. Acad. Nat. Sci. Phil., xii., 

 1861, p. 41. Id. Haswell, Cat. Austr. Crust, 1882, p. 19-3. 

 Id, Ortmann, Zool. Jahrb. Syst., v., 1890, p. 523. Id. Grant 

 in Sayce, Vict. Nat., xviii., 1902, p. 155. 



Carapace smooth and polished. Form of the rostrum variable, 

 straight or bent upwards and extending nearly or quite as far 

 forward as the scaphocerite. There are six to nine teeth above 

 and four or five below, those near the apex placed so close 

 together as to give the tip a hi- or trifid appearance. The 

 posterior two or three teeth are placed over the anterior part of 

 the carapace. The antennal and branchiostegal .spines are well 

 developed, the latter being placed well behind the vertical of the 

 other, and at some distance from the anterior margin of the 

 carapace. 



The antennular peduncles are not so long as the rostrum, and 

 the outer margin of their flattened portion is aimed with a 

 terminal and median spine. The two external tiagella are united 

 for rather more than one-third the length of the thickened 

 flagellum, the outer margin of which may be obscurely serrated. 

 The basal joint of the antennal peduncle lias a strong spine at its 

 outer angle, and the flagellum is about as lung as the entire body. 



The external maxillipeds extend a little beyond the antennal 

 peduncles, and their exopods are large and reach to the ends of 

 the ante-penultimate joints. 



The first pair of legs are very slender and reach to, or a little 

 beyond the tip of the scaphocerite. The second pair are more 

 slender than those of L. serenus and are somewhat shorter, the 

 end of the carpus in my largest specimen being but little in 

 advance of the tip of the rostrum. The carpus is thickened 

 distally and is much longer than the palm, being, in young speci- 

 mens, equal to the length of the whole hand. The palm is 

 swollen, and is only a little longer than the fingers. 



The three posterior pairs of legs are very slender, and the fifth 

 pair is rather longer than the third. Except for a row of spinules 



