364 



Transactions. 



From the discussion given above it will be evident that M. inaequipes 

 and|M. viridis present many points of resemblance,^and that they cannot 

 be placed in different genera. I prefer to keep them both in Maera, though 



Fig. 3. — Maera viridis. Second gnathopod of male, 

 from a Lord Howe Island specimen. 



in the short third uropoda and in the widened joints of the last pair of 

 peraeopoda M. viridis certainly approaches to Elasmopus, and naturally 

 in the present state of our knowledge the distinctions between the genera 

 are somewhat artificial. 



In the New Zealand specimens of M. viridis that I have examined the 

 palm of the second gnathopod is transverse or a little projecting, and it 

 is usually straight or even, though sometimes showing shght indications 



Fig. 4. — -Maera viridis. Second gnathopod of male, 

 from a Port Jackson specimen. 



of a central notch and of a narrower depression next to the defining tooth. 

 In a specimen from Lord Howe Island that I think must belong to the 

 same species the defining tooth (fig. 3) is much longer and better marked 

 and the palm more uneven, the median notch, however, being shallow and 



