G50 



MB. E. J. MIEKS ON THE 



spine present. Basal antenna! joint not much enlarged at base. 

 Type Mimidus foliatusy Stimpson. 



EpiALTrs, M.-Edwards. Eostrum lamellate, emarginate. 

 Prgeocular spine present. Basal antennal joint considerably en- 

 larged at base. Ambulatory legs with the penultimate joint not 

 dilated and compressed. 



Subgenus 1. Epialtus. Carapace suboblong. Second tooth 

 of the antero-lateral margins greatly developed. Type Epialtus 

 hituherculatiis, M.-Edwards. 



Subgenus 2. Antilibinia, IPLeay. Carapace suboval, smooth, 

 or uneven. Second tooth of the antero-lateral margins small. 

 Type AntiliUnia Smithii, M'Leay. 



I place in this subgenus the W.-American species with smooth 

 oval carapace. M'Leay's type species is from S. Africa. In the 

 American species (E. dentaftis, E. emarginatus) the orbital mar- 

 gin, although not prominent, is so well defined and circular that 

 they might almost be separated as a distinct genus, and placed 

 near Scyra in the Pericerida). A. Smithii externally resembles 

 the species of Lihinia. 



*EuPLEUEODON, Stimjpsoii. Carapace depressed and uneven ; 

 antero-lateral angles strongly prominent. Ambulatory legs 

 strongly prehensile, penultimate joints dentigerous. Type Eu- 

 ^ileurodon trifurcatiis, Stimpson. 



This genus seems to be in some degree intermediate between 

 the subgenera Epialtus and Antilihinia. 



FlagellcD of antcnnce exposed and visihle from alove at side of 

 rostrum {basal joint of antennae not miicli enlarged at lase). 



PuGETTiA, Dana (Feltinia, Dana). Carapace somewhat con- 

 stricted behind the second lateral spine. Ambulatory legs slejider, 

 with the penultimate joint not dilated or compressed. Type 

 Fugeitia gracilis, Dana. 



AcANTHONTX, Latreille. (Plate XII. fig. 6.) Carapace usually 

 suboblong, not constricted behind the second lateral spine. Am- 

 bulatory legs with the penultimate joint more or less flattened, 

 dilated, and compressed. Type Acantlionyx lunulatiis, Eisso. 



(The genus Deliaanius of M'Leay, Annulosain Smith's S. Africa, 



