96 CRUSTACEA. 



SUBFAMILY II. PYRI1SLE. 

 GENUS PYRIA (Dana). 



OcuK retractiles, breves, spind prceorbitali carentes. Carapax sub-pyrifor- 

 mis depressus. Rostnim lamellatum, bifidum, sat breve. Antenna} ex- 

 ternal sub rostra celatoe. Pedes sat curti; antici tenues, reliqui vcdde 

 compressi articulis tertio, quarto, quintoqijie complanatis; tamo tcnai. 



Eyes retractile, short, without a praaorbital spine. Carapax subpyri- 

 form in outline. Beak lamellar, two-horned, rather short. Outer 

 antennas concealed beneath the beak. Feet short; the anterior 

 pair slender; eight posterior much compressed; third, fourth, fifth 

 joints widely flattened; tarsus slender. 



The carapax in the species on which this genus is founded, is but 

 little convex, and but slightly uneven, with the different regions indis- 

 tinct. The outline is even and convex from the angle just behind the 

 eyes around by the posterior margin; the eyes are quite short and 

 project but little from a shallow emargination just within this angle. 

 The beak starts from the level of the eyes, and each part is ovate, being 

 narrower at base than it is a short distance above. The eight poste- 

 rior legs are remarkable for their flattened form ; the fourth and fifth 

 joints taken together, have an oblong, elliptical outline. 



The outer antenna) have their moveable part arising just each side 

 of beak, but it is generally directed inward and forward under the 

 beak. The buccal area is broader than long. The second joint has 

 the inner apex much produced. The epistome is quite short. 



This genus is near Herbstia in its short, lamellar, divided beak; but 

 is peculiar in its very much compressed legs, and in having its outer 

 antennae concealed beneath the beak. 



PYRIA PUBESCENS. 



Pubescent, inermw, omnino depressa, subpyriformis, latitudine post-cjrbi- 

 tali valde majore quam dimidium latitudinis maximce, marginibus 



