240 THE SCHIZOPODA. 



the outer margin and directed forwards and a little outwards (fig. Ic), wkile 

 there is no trace of any corresponding distal process or tubercle above near the 

 inner margin. Third joint slightly longer than second; its dorsal keel only 

 half as long as the joint, seen from above less sharp (fig. la) and seen from the 

 side only moderately high (fig. lb), very obliquely triangular, with the distal 

 upper angle obtuse. — The antennal squama reaches nearly or not fully the middle 

 of third antennular joint and is proportionately broader than in E. recurva or 

 E. eximia; the spiniform process from the subbasal joint reaches the middle 

 of the squama. 



The copulatory organs (figs. Id-lg) are somewhat similar to those of E. 

 eximia, but all three processes are proportionately shorter and show besides 

 minor differences. The terminal process has its distal part shorter and much 

 less cur\-ed (fig. Ig), with its spiniform appendage rather short. The proximal 

 process is considerably shorter and proximally more inflated (fig. le) and beyond 

 the middle more curved than in E. eximia; its distal fourth is an oblong, at the 

 end, rounded plate (fig. If) bent considerably backwards, and at its base a nar- 

 rowly triangular protuberance projects forwards; the real length of this plate 

 is shown by fig. le, while fig. If exliibits the inner lobe with its two processes 

 seen from the inner side, and owing to the very oblique direction of the terminal 

 plate of the proximal process that plate looks in this figure much shorter than 

 in the lateral view. The lateral process has its curved part shorter than in 

 E. eximia, but as in this species without any dorsal teeth. The auxiliary lobe 

 is moderately long; the obliquely triangular terminal part of the setiferous lobe 

 is somewhat more produced than in E. eximia. 



Length of adult specimens 8.5-10 mm. 



Remarks. — E. brevis is easily distinguished from the other species of this 

 group by its longer frontal plate with the rostrum short, by the shape of the 

 lobe of first antennular joint and especially by having above on the second 

 antennular joint a most conspicuous, slender process near the distal outer angle 

 but no trace of any process or tubercle at the inner angle. 



Distribution. — The distribution of E. brcms differs very little from that of 

 E. mutica. In the tropical East Pacific it is confined to a still smaller southern 

 area than E. mutica as it was not found North of Lat. 15° 7' S., and the majority 

 of the Stations are South of Lat. 20° S. — It is not known from near the Western 

 coast of Europe, but the Prince of Monaco has captured it in the Sargasso Sea 

 in Lat. 40|°— 4li° N., long. 40°-4lf° W., and several times in the triangle, the 

 "Banc de Goringe," the Azores, and the Canary Islands; besides in the Medi- 



