PLATE I. (Crustacea, Plate XC.) 

 Achaeopsis thomsoni (Norman). 



n.s. Dorsal view of a male specimen, natural size, showing the left cheliped 

 and last two ambulatory legs in position ; the right cheliped detached, 

 its fixed finger broken ; the other limbs missing. Parts of the cara- 

 pace magnified, in ventral aspect, are shown in the median line, and a 

 lateral view on the right shows the eye, the first and second antennae, 

 and the rostrum with its strongly curved ventral process. 



PI. The pleon flattened out. 



The remaining figures are from a female specimen. 



m. ? , mx. 1, ? . The mandible and first maxilla, the latter with further 

 magnification. 



mx. 2, ? , nixp. 1, ? . The second maxilla and first maxilliped, uniform with 

 higher magnification of first maxilla. 



mxp. 2, ? , mxp. 3, ? . Second and third maxillipeds, magnified to the same 

 scale as the mandible. 



