108 DESCRIPTIONS OF THE BIYRIAPODJE 



Genus POLLYXENUS, Latr. 



Body membranaceous, pennicillate with setae at 

 tip ; antennae inserted under the anterior margin of 

 the head. 



Species. P. *fasciculatus. Body pale brown, 

 linear, incisures ciliated, fasciculated each side; 

 head deeply ciliated before. 



Inhabits the Southern States. 



Segments smooth, ciliatc at the incisures and fas- 

 ciculate with brown setae each side, terminal pencil 

 cinereous ; head semiorbicular, depressed, deeply 

 and densely ciliated on the edge with setae; eyes 

 small, oval, prominent, placed obliquely in the middle 

 of the lateral margin ; antennce very short, thick 

 reddish-brown ; feet white. 



Length rather more than one tenth of an inch. 



Beneath stones &c. in humid situations, not very 

 common. 



Orbe* 2. SYNGNATHA, 



Genus LITHOB1US, Leach. 



Antennae conico-setaceous ; dorsal scuta alternate- 

 ly much shorter and concealed. 



Species. L. *spinipes. Joints of the feet with 

 short spines at tip, and a single much longer one 

 beneath the tips. 



