156 



KKCOKl'S III- THE ATSTRALIAN MfSKL'M. 



Legs of the second |)air scai'cely inodified. The ventral 

 plate is divided into two plates ; the coxse are elongate as 

 usual ; their base is excavated in the middle of the posterior 

 surface, the space being filled by the chitinized openings of tlie 

 seminal ducts; the telopodit is Hve-jointed, and the joints are 

 noi'mal. 



Legs of the third pair similar to the preceding except that 

 the posterior ventral plate is not divided ; the coxal joint 

 shows traces of the division, so that a transverse band is 

 seen on the anterior surface expanding laterally around the 

 base of the ti-ue coxal joints, the traclieal stalks being attached 

 to the lateral expansions; and finally the distal end of the 

 coxjp show an additional joint, more or less completelv 

 detached, which has to be considered as a trochanter. 



Fi'om the fourth })air of legs backwards (fig. 33), the 

 trochanter ftr.) is ])resent, the second joint of all legs (prf.) 



is split o])en longitudin- 



t 



ally on the distal half of 

 its ventral surface ; the 

 cleft is closed by a soft 

 mejiibrane (i».) which, 

 when normally evaginated, 

 assumes the shape of a 

 conical process, the apex 

 of which reaches over the 

 middle of the next joint. 



Fiu. 'i'i- — Aiiiasliiioiioiiiis /asmainainis. — Three rni • i 



proximal joints of a le« of the 10th pair. /r. ^ J luS membl'anaceOUS pi'O- 

 trochanter: w. =- memhranaceoiis process. cess becomes fullv devel- 

 oped only on the legs of the eighth segment and docs not 

 disappear but on the last few paii-s. 



Coxft> of the seventh jtaii' swollen, globular 



The seventh segment is bi-oader than the preceding and the 

 following segments; its ventral ends are twisted and pi't)trii(li'd. 

 The apices of the gonopods are seen to iMojecl i>iit of the cdpii- 

 latoi'v sac. 



