258 DB. J. G. DB MAK ON THE PODOPHTHALMOIJS 



on the sides. The terminal segment exactly resembles that of 

 Gehiopsis Darwinii in its general form, having the posterior 

 margin nearly straight, unarmed, and fringed with hairs. The 

 upper surface of this segment bears on each side a longitudinal 

 ridge parallel to its lateral margins ; and these two ridges are 

 united by a transverse ridge situated at some distance from but 

 parallel to the anterior margin. Three longitudinal grooves occur 

 on the area defined by these ridges, namely, one in the middle and 

 one on each side, close to the ridges. The elevated parts of the 

 upper surface of the segment are more or less distinctly trans- 

 versely rugose. 



The internal antennae are shorter than those of G. nitida from 

 the Cape Yerde Islands, but longer than those of G. Darwinii -. 

 as in G. nitida the terminal joints of the peduncles project 

 beyond the front ; but in G. intermedia they are much shorter, 

 scarcely measuring more than a fourth of the length of the 

 gastric region. The peduncle bears two subequal flagella, of 

 which the interior one is a little longer and much thicker than 

 the other. The external antennae are a little longer than the 

 carapace, and are similar to those of G. Darwinii. Their 

 peduncles are scarcely longer than those of the internal antennae, 

 and their joints are short, resembling those of the species from 

 Port Darwin ; the antepenultimate joint is armed at the distal 

 end of its upper margin with a minute spinule, and the last two 

 joints are clothed above with long hairs. The outer maxillipeds 

 project somewhat more forwards than the peduncle of the external 

 antennae. 



The chelipedes are equal to one another and about once and a 

 half as long as the carapace ; in their outer appearance they 

 seem to resemble those of the species from the Cape Verde 

 Islands. The laterally compressed meropodites project nearly 

 as much forwards as the peduncles of the internal antennae ; 

 they are everywhere smooth and glabrous, except the internal 

 margins of their narrow under surfaces, which are armed along 

 their whole lengths with a row of minute equal spinules, about 

 25-30 in number, and fringed with very long hairs. Some few 

 short hairs are also found along the external margins of their 

 under surfaces and at the distal ends of their upper surfaces. 

 The wrists are short, and armed with two rather strong, acute, 

 subequal spines, one at the distal end of the upper margin, and 

 the other at the distal end of the under margin ; the latter some- 



