Thomson. — On New Zealand Orchestidae. 197 



3. Uroptychus australis, Henderson. 

 Eep. Anom. Chall. Exped., p. 179, pi. xxi., fig. 4. 



Taken at both the preceding stations. Also met with off 

 Port Jackson, and off the Island of Banda. 



EXPLANATION OF PLATES XX., XXI. 

 Plate XX. 



Fig. 1. Cryptodromia lateralis, dorsal aspect ; x 2. 



Fig. 2. „ ventral aspect ; x 2. 



Fig. 3. Eupaqurus novm-zealandicB, front ; x 2. 



Fig. 4. „ right chelipede of a large specimen 



Been from above ; nat. size. 

 Fig. 5. „ right chelipede, upper surface of 



hand ; nat. size. 

 Fig. 6. Eupagurus edwardsi, front ; x 2. 

 Fig. 7. „ hand of right chelipede ; x 2. 



Fig. 8. Eupagurus kirkii, front ; x 2. 



Fig. 9. „ right chelipede from above ; x 2. 



Fig. 10. „ „ upper surface of hand ; x 2. 



Fig. 11. Eupagurus cookii, front ; x 3. 



„ right chelipede seen from below ; x 3. 



„ „ upper surface of hand ; x 3. 



Plate XXI. 

 Eupagurus traversi, front ; x 3. 



„ right chelipede from inside ; x 3. 



„ „ from outside ; x 3. 



4. Stratiotes setosus, front; x 2. 



„ left chelipede from inside ; x 2. 



„ „ carpos and propodos from 



above; x 2. 

 Fig. 7. Galathea pttsilla ; x 2. 

 Fig. 8. Petrolisthes elongatus ; nat. size. 

 Fig. 9. Petrolisthes novcE-zela7idice ; nat. size. 



Art. XXII. — Synonymy of the Neic Zealand Orchestidae. 

 By George M. Thomson, F.L.S. 



[Read before the Otago Instittde, 15th November, 1898.] 



1 HAVE been engaged for a long time past in endeavouring to 

 clear up the confusion vfhich exists as to the various forms of 

 Amphipodous Crustacea belonging to the Orchest/idce, (the shore- 

 hoppers and their allies) found in New Zealand. Owing to 

 the differences of structure in the males and females, and even 

 among the males themselves at different periods of their de- 

 velopment, and to the wide distribution of some of the species, 



