STALK-EYED CRUSTACEA 191 



other, by a well-marked notch, below which one sees the 

 epistomian point, which is very prominent. The abdomen 

 of the male is narrow ; its penultimate joint has a 

 membranous base. The verges are thin, straight, and 

 prolonged as far as the extremity of the penultimate joint 

 of the abdomen. The carapace is violet, under surface 

 yellow-grey. The abdomen of the female is red, with a 

 black band on each joint. The legs have a blue and red 

 colour. 



Guatemala, Chili. 



The two following, the first described by J. S. Kingsley 

 and the second by M. J. Rathbun, are mentioned : — 



II. Callinectes dubia. 



Resembles C. pleiiriticus, except the external teeth of 

 the front are more prominent, the antero-lateral teeth are 

 more crowded together, the fissures between them being 

 nearly closed ; the male verges are larger, with the 

 extremities straight, and the antero-lateral margin is but 

 slightly bowed. 



West Coast of Nicaragua. 



12. Callinectes sapidus acutidens. 



Resembles C. hastattis, except the markings and 

 granulations on carapace are more pronounced ; there is a 

 transverse granulated ridge on the cardiac lobes. The 

 frontal teeth are narrower and more acute, and there are 

 two small intervening teeth. Subfrontal and suborbital 

 spines acuminate. Lateral teeth broad at base, narrowing 

 abruptly to long, acuminate tips ; margins granulate. 

 Last two teeth very long. Lateral spine more than three 

 times the length of the preceding tooth. Ridges on first 



