STALK-EYED CRUSTACEA 49 



Subfamily I. Maiinae. 



MaiiucB Miers. 



Maiens cryptophthaluies (part) . Milne Edwards. 



Carapace usually subtriangular. Rostrum well de- 

 veloped. First pair of legs, in the male, enlarged ; fingers 

 not excavated at tips. 



Synopsis of the Genera. 



A. Rostrum vertically compressed and laminated, 

 bifid or notched. 



a. Orbits shallow and open above, so that the eyes, 

 when retracted, are more or less visible from above; the 

 eyes short and thick. — {Herbstia.) 



B. Rostrum composed of two more or less distinct 

 divergent spines. 



b. Orbits deep, so that the eyes, when retracted, are 

 concealed ; the eyes small, eye-peduncles slender. 



b^. Carapace triangular, rounded behind. — {Pisa?) 

 c^. Carapace pear-shaped. — {Sisyphus.) 



I. Herbstia. 



Herbstia H. Milne Edwards, Miers. 



Cancer Herbst. 



InacJms Fabricius. 



Maia Latreille. 



MitJirax Risso. 



Rhodia Bell. 



Micropisa, HerbsticUa . . Stimpson. 



Carapace is depressed, broadly triangular, with the 

 dorsal surface usually spinose or tuberculated ; the gastric 

 and the branchial regions are about equally developed. 

 4 



