Genus Second. ASaApaus: BIR Si SA 
Body broad and rather flat. ‘Middle lobe prom 
nent and very distinct. 
Flanks or lateral lobes each double the size of the 
sea lobe. 
Submembranaceous expansions extending beyond the 
lateral lobes. | i 
Buckler semicircular, with two reautneae veye- 
shaped tubercles. | | 
/bdomen divided into 8 or 12 articulations. 
Genus Third. Ocyeta. bie : 
Body much depressed into an oblong ellipsis—not 
contractile into a sphere. : 
Buckler edged, a slight longitudinal fate aris- 
ing from its anterior extremity. Posterior Antes 
elongated into points. 
Without any tubercles except the eyes, which are 
neither prominent nor reticulated. 
Longitudinal lobes slightly prominent. 
Hbabaen with 8 articulations. 
Genus Fourth. ParapoxipEs. _ 
Body depressed——not contr actile. ~ 
Flanks much broader than the middle lobe. 
Buckler nearly semicircular—three transve 
rows on the middle lobe. | ef a | 
Eye-shaped tubercles none. — i ia Aa 
Abdomen with 12 articulations. eri a 
Arches of the lateral lobes, more or | ess'prolonged 4 
beyond the SP mnrane which sustains them. 
efur- , 
sce 
~ Pui any ft 
