1904.] 



MARINE FAUXA OF ZANZIBAR. 



315 



highly ai'ched on its dorsal suil'ace tlii'oughoiit (see text-fig. 57) : 

 the long segments bear well projecting feet distinctly separated 

 from one aiiothe]", tliongh many of the small Maldivan sj^ecimens 

 form an exception in this I'espect. 



The prostomium, at least in adidt specimens, is l)i-ond and usnally 

 deeply notched in front in 72 per cent, of tlie specimens (compai'e 

 the figures 1 & 2, PI. XXII.), in contradistinction to the allied 

 species, E. i7iclica (PI. XXI. fig. 9). The j)alps are, in 46 pei- 

 cent. of those examined, grooved diagonally below, as shown in 

 PI. XXII. fig. 3, and in a few cases so deeply as to make the 

 prostomium quadripai'tite when seen from above, as in Kinberg's 

 division of the genus, Eryfhyle^ which for this reason is not 

 I'ecognised in the pi'eceding table of species. 



Text-fii^. 57. 



A^__J^ 



Sections of body of J?, antennata. 



Tlivouuli liiiccal segment. | h. Position of laru'ost gills 



Hind part of hody remains as h. 



From a large specimen of var. viridis. X 5. 



Text-fie-. 58. 



Upper jaw-plates oi E. antennata, a large specimen. X 23. 



The buccal and succeeding segments are nearly as thick as the 

 broadest in the Ijody (PI. XXII. fig. 1), an important and constant 

 character of the species. 



The jaw-apparatus in my specimens does not agree well with 



