STALK-EYED CRUSTACEA 395 



carapace is generally minutely spotted with red, and 

 streaked down the middle with white. First pair of legs 

 red. Walking legs annulated. 



Range. — Barbados, St. Thomas. 



2. Pisosoma. 



Pisosoma .... Stimpson. 



Carapace rounded. Front bimarginate ; the upper 

 margin of crest straight, the lower margin projecting into 

 a small triangular tooth. First joint of antennal peduncle 

 short, not reaching the superior margin of the carapace. 

 Walking legs terminate in a joint with single claw. 



I. Pisosoma reisei. 



Pisosoma reisei .... Stimpson. 



Carapace smooth and shining, faintly punctuate and 

 obsoletely striated transversely. Triangular tooth of lower 

 frontal margin nearly vertical. Last three joints of walk- 

 ing legs hairy ; fourth joint not dilated, with smooth 

 margins. Colour, crimson, with a large white spot on 

 either side of the front ; walking legs crimson, banded 

 with white. 



Range. — St. Thomas. 



3. Porcellana. 



Porcellana . . Lamarck, Latreille, Desmavest, H. 

 Milne Edwards, De Haan, Dana, 

 Bell, Stimpson, Heller, Haswell, 

 Henderson. 



Pisidia . . . Leach. 



Carapace suborbicular or subovate ; the length usually 

 greater than the breadth. Frontal region prominent and 



