82 Transactions. — Zoology. 



Moerapetriei,Gc. M. Thomson. (Trans. N.Z. Inst., xiv., p. 236,pl.xvhi.,fig.3). 



This species was described by Mr. Thomson from specimens obtained 

 at Port Pegasus in the dredge. I have found it pretty abundantly in Lyt- 

 telton Harbour at low tide. The female differs from the male in the form 

 of the second pair of gnathopoda. In these the carpus is much longer than 

 in the male, being slightly longer than broad; it is densely haired, the hairs 

 being chiefly arranged in rows ; many if not all these hairs are serrated ; 

 the propodos is only very slightly broader than the carpus, having tufts of 

 setas along both sides and also along the middle, those on the under sur- 

 face being the most numerous and the thickest. Palm imperfectly defined 

 by several strong setae at the point where the tip of the dactylos impinges. 

 Dactylos slender, very acute. (See plate II., fig. 4a.) 



In the male my specimens have the propodos of the gnathopoda less 

 hairy than the one drawn by Mr. Thomson, and the dactylos is more blunt, 

 being quite rounded at the end. 



The two acute spines on the postero-dorsal margin of the fourth seg- 

 ment of the pleon are invariable in both sexes. 



Genus Harmonia, Haswell. 

 (Proc. Linn. Soc. N.S.W., vol. iv., p. 330, and Cat. Aust. Crust., p. 250.) 



Generic characters : — " Coxa? not so deep as their respective segments. 

 Superior antennas with an appendage. Inferior antennas longer than the 

 superior pair. Mandibles with a palp. Maxillipedes unguiculate, sub- 

 pediform, provided with a squamiform plate on the basos only. Gnatho- 

 poda subchelate, unequal, posterior pair very large. Pereiopoda stout. ' 

 Posterior pleopoda biramous, the rami short, conical. Telson single, 

 elongate." 



Of this genus Mr. Haswell says : " This genus, of which I have as yet 

 observed but one species, has affinities with Eurystheus and Amathia, but is 

 distinguished from the former by the form of the telson and the stoutness 

 of the pereiopoda, and from the latter mainly by the large size of the poste- 

 rior gnathopoda." 



Before noticing Mr. Haswell's genus I had found the following species, 

 and had begun to describe it as a new species of Eurystheus. 

 Harmonia crassipes, Haswell. (I.e., p. 330, pi. xix., fig. 3.) 



" Superior antennas as long as the cephalon and first six segments of 

 the pereion, first and second segments of the peduncle subequal, the second 

 narrower than the first, third scarcely distinguishable from the articuli of 

 the flagellum ; flagellum rather longer than the peduncle. Inferior an- 

 tennas longer than the superior pair ; peduncle and flagellum subequal. 

 Anterior gnathopoda small ; propodos ovoid ; palm oblique, undefined. 

 Posterior gnathopoda much larger than the anterior pair ; carpus sub- 



