266 AUSTBA1IAN MALACOSTBACA. 



shorter than the fourth and fifth. Posterior pleopod a very small ; 

 rami short, sub-foliaceous, armed with slender hairs. Telson 

 conical, armed above with a few slender hairs. Length £ in. 

 Port Jackson. 



Sub-Division Domicola. 

 Pereion not compressed. Having either the lower antenna 

 sub-pediform and furnished with strong, slightly- curved spines, 

 or the posterior pair of pleopoda furnished with hook-like spines. 

 Live in tubes or burrows, and usually can walk erect. [S. i?.] 



Family COROFSIIBM. 



None of the segments of the pereion or pleon obsolete or fused 

 together. \8. .B.] 



Section NIDIFICA. 

 Having the power of secreting a substance that, like a web, 

 binds together the materials of which the nest is composed, or 

 one of a more membranous character. [S. .2.] 



Sub-Family Podocerides. 



Peduncle of the upper antennae much shorter than the peduncle 

 of the lower. Lower antennae robust, and used in climbing. 

 Posterior pair of pleopoda furnished with hook-like spines. 

 [8.B.] 



G-enus Amphithoe, Leach. 

 Coxae large, those pertaining to the third pair of pereiopoda 

 having the anterior lobe not shorter than the preceding, posterior 

 lobe very small. Second pair of gnathopoda larger than the first. 

 Posterior pair of pleopoda supporting two rami, the outer ramus 

 terminating in one or more short, slightly curved spines, the inner 

 sub-foliaceoiis. Telson single, lamelliform. 



465. Amphithoe quadrimanus. 



Amphithoe quadrimanus, Haswell, 1. c, p. 337, pi. sxi., fig. 7. 



Eyes small, round. Superior antennae as long as the cephalon 

 and pereion ; flagellum thrice as long as the peduncle. Inferior 

 antennae twice as long as the peduncle of the superior pair ; third 

 segment very stout, produced below at the distal end into a 



