156 Bulletin, Vanderhilt Marine Museum, Vol. Ill 



concave and the outer distal angle is an acute small spine. The telson 

 is as long as the uropoda, or one and one-fourth times as long as the 

 sixth segment, narrowed distally, the distal margin truncated, only- 

 very slightly rounded, and armed with about eight sharp, articulated 

 spines ; the upper surface of tlie telson is flat and the narrow lateral 

 portion is bent down almost at right angles to the upper; a row of 

 about nine articulated spines on each side marks the margin of the 

 upper surface of the telson. The uropoda have the peduncle produced 

 to an acuminate process at the outer distal angle ; the blades are each 

 subequal, narrow, tapered distally to a narrowed apex and with the 

 entire margins ciliated. There are three pairs of teeth on the three 

 posterior segments of the body. The manner of carrying the eggs is 

 well illustrated in the accompanying figure. Each of the four females 

 taken carries from 90 to 100 large spherical eggs. 



The eyes are very short-stalljed, there being also a small rounded 

 ocellus on the upper surface of the stalk; the cornea is spherical, of 

 greater diameter than the stalk, shining black, composed of numerous 

 small facets. 



The inner antennae have the basal peduncular joint longer than 

 and excavate beneath the eye, with a short acuminate spine at its distal 

 angle, and a long, acuminate, tongue-like spine resembling an acicule 

 at its outer lateral angle, with the incision separating it from the main 

 part of the article reaching almost to the base, while the apex of this 

 spine reaches almost to the distal margin of the second article; the 

 second peduncular article is short, subcylindrical, with an acute tooth 

 at its upper, outer distal angle and a few cilia along the distal margin ; 

 the third article is scarcely two-thirds as long as the second and bears 

 an acute spine at its upper distal margin ; the inner whip of the flagel- 

 lum is much the slenderer and consists of 46 to 50 short rings, each 

 with a single, up-pointing seta at the distal margin ; the outer whip is 

 much thickened for the proximal two-thirds of its length and bears on 

 the upper surface of this part a long, thick brush of fine setae ; the 

 distal third is a fine whip; the entire whip consists of about forty 

 rings. The external antennae have the proximal article stout, with 

 an acuminate triangulate spine at the outer distal angle ; the scaphoc- 

 erite is longer than the rostrum and has the outer lateral margin 

 thickened, terminating subdistally in an acute spine ; the distal margin 

 is evenly rounded and ciliate. The second and third peduncular ar- 

 ticles are short, cylindrical; the flagellum is very long and slender, 

 being multiarticulate, 54 mm. long. 



