234 THE SCHIZOPODA. 



and a little upwards, and this process is sometimes even proportionately long 

 and at least considerably longer than the outer dorsal tubercle. Third joint a 

 little shorter than the second; its dorsal keel is very high, shaped nearly as in 

 E. eximia, with the triangular, acute tooth beyond the middle and the rounded 

 incision below that tooth well developed.— The antennal squama shghtly broader 

 than in E. eximia, reaching the middle of third antennular joint; the spiniform 

 process from the antennal peduncle reaches the middle of the squama. 



The copulatory organs (figs. 3f-3n) show some minor differences from those 

 in E. eximia. The terminal process (figs. 3f-3h) in the main as in that species, 

 being a little shorter and thicker, with the heel somewhat longer and the distal 

 secondary process shorter, thicker, and obtuse. The proximal process is shorter 

 and thicker than in E. eximia, with the basal third somewhat inflated on the 

 outer side; about at the beginning of the distal third it is bent somewhat inwards, 

 and its terminal part is, seen from behind, a flattened plate somewhat expanded 

 on the outer (distal) side, but the end of the plate varies much in shape, even 

 in specimens from the same locaUty, as is shown by four figures (figs. 3i-3n); 

 sometimes the end is nearly cut ofT obliquely with the inner angle acute and feebly 

 produced (figs. 3i and 3k), sometimes the end is deeply incised and the inner 

 corner produced into an acute (fig. 31) or obtuse (fig. 3n), narrow process much 

 longer than broad, while the most distal angle formed by the terminal and the 

 outer margin is always rounded, but sometimes nearly rectangular (figs. 3m and 

 3n), sometimes very obtuse (figs. 3k and 3i). The median lobe with its lateral 

 process and the setiferous lobe nearly as in E. eximia; the auxiliary lobe is very 

 long. 



The specimens taken at Sta. 4576 are somewhat small, 11-12 mm., long, 

 but the species varies much in size, and a female from Lat. 34° 50' S., long. 25° 

 30' E. measures even 18 nun. in length. 



Remarks. — The male of tliis species is easily distinguished from all other 

 forms of the genus by the shape and direction of the lobe from first antennular 

 joint. In the female the shape of this lobe is to some degree similar to that 

 in the three following species, l^ut the female of E. rccurva is easily separated 

 from the other forms by the acute, slender, and spiniform process above near 

 the distal inner angle of second antennular joint; in E. diomedeae Ortm. this 

 process is replaced by a triangular protuberance, while in E. mutica H. J. H. 

 and E. brevis H. J. H. there is no armature at the upper inner angle of second 

 joint; finally in E. diomedeae and E. mutica the lobe from first joint is directed 

 upwards and considerably forwards. 



