76 STALK-EYED CRUSTACEA 



very obtuse. The rostrum is short. The terminal tooth 

 on the basal joint of external antennae exceeds much 

 the anterior angle of the superior orbital border ; the 

 flagellum is inserted immediately below the lateral border 

 of the rostrum. The second pair of legs is as long as 

 the postfrontal portion of the carapace, and the fourth 

 joint is a little nodular towards the end. 



The body is covered with a rough yellow down. 



Length about one and a half inches. 



Range. — West Indies, Bermuda, Bahia. 



2. Macrocoeloma subparallela. 



Macroavloma subparallela . Stimpson, Miers. 



Periccra vilpini Desbonne and Schramm. 



Pericera subparallela . . . Stimpson. 



Body covered with a short, tough pubescence. Cara- 

 pace triangular, narrow, and with the antero-lateral sides 

 not concave. Lateral spines subtriangular, sharp, and 

 connected with each other by a nearly straight row of 

 short spines or sharp tubercles crossing the back. A 

 tubercle on the posterior part of the gastric, and one on 

 the intestinal region ; both small. Orbital tubes pro- 

 minent. The rostrum forms one-fourth the length of the 

 carapace, with the horns nearly parallel ; their base is 

 connected for one-third of their length by a web-like 

 expansion of the front. The distance between their tips 

 equals three-fifths the distance between the tips of the 

 prasocular spines. The movable part of the external 

 antenna; is concealed beneath the rostrum ; the anterior 

 spine on basal joint is small, slender, and visible on a 

 dorsal view. First pair of legs, in the male, a little shorter 

 than the carapace. Walking legs rather short. 



Range. — St. Thomas, Guadaloupe. 



