208 



Bulletin Vanderbilt Marine Museum, Vol. VI 



a fourth of the length of the next segment ; the outer half of this 

 distal margin of the first joint is separated briefly from the inner 

 by a small sulcus and the distal outer half of the margin is widely 

 convex and evenly crenulate and setose. The second joint has two 

 longitudinal carinae dorsally, one near the inner lateral margin, 

 extends the full length of the article and terminates in a small 

 tooth at the distal angle; the second carina is not quite parallel 

 to the first, the two being a little wider apart distally than proxi- 

 mally ; this second carina is nearly midway the dorsal surface and 

 extends the entire length of the joint and terminates distally in 

 a strong denticle. The third peduncular article is shorter than the 

 second and bears dorsally along the inner lateral margin a strong 

 carina, extending from the proximal margin and terminating in 

 a denticle. The second carina of this third joint extends the length 

 of the joint and is placed nearly midway the dorsal surface ; on 

 the outer side of the third segment there is a short, interrupted 

 carina, the proximal part of which is stronger, the distal portion 

 being twice constricted. 



Text fi^re 13 — D, Euphausia consuelae, new species, type: specialized 

 male first pleopod, with the inner organ unrolled and drawn from the posterior 

 lateral side, E, specialized male second pleopod, also drawn from the posterior 

 lateral side ; both greatly enlarged. 



