STALK-EYED CRUSTACEA 121 



of the orbit. The basal antennal johit is very obh'que. 

 The epistome is smooth ; the anterior edge of the buccal 

 cavity scarcely projects, and is without a tubercle at its 

 extremities. The first pair of legs are not twice as long 

 as the carapace ; the second pair are shorter than the third. 



The colour of the upper surface of the carapace is 

 dark lake with a narrow border of brick-red, yellow spots 

 appearing through. The lake patch joins the front in 

 three lines forming two equal curves directed forwards, 

 and is produced posteriorly with a lobe of the same shape 

 as the carapace ; round this lobe the yellow spots form a 

 more or less continuous border. The under surface is 

 bright yellow. The eyes and eye-peduncles are brick- 

 red, of a shade of the margin of the carapace. The legs 

 are dark mahogany colour, with orange bands near the 

 articulations. The tips of the fingers of the first pair of 

 legs are black. These legs are dark mahogany colour, 

 with orange markings near the articulations. 



Range. — Barbados, Guadaloupe, Mexico, Brazil. 



2. Lophactaea. 



LopJiacta;a . . A. Milne Edwards, Miers. 



Carapace transverse, convex, its dorsal surface dis- 

 tinctly lobulated in its anterior half, and often granulated. 

 The antero-lateral margins are longer than the concave 

 postero-lateral margins, and are not dentated, but defined 

 by a crest which is interrupted by fissures. The regions 

 are distinctly defined and smooth. The front is deflexed 

 not prominent, rough and about one-third the breadth of 

 the carapace ; its anterior margin is wavy and nearly 

 straight, generally with a median fissure. The basal joint 

 of the external antennse attains the infero-Iateral process 

 of the front, but is not prolonged within the orbital hiatus. 



