MANUAL OF NATURAL HISTORY. 267 



rous, sub-equal, not imbricate ; legs numerous, 

 moderate ; antennae subulate, a little longer 

 than the head, joints short, fourteen or more; 

 eyes two, distinct, granular ; hind lip armed 

 with two strong hooks forming a pincer. 



4. Family. — Earth-Centipedes (Geophilidae). Body 



very long and narrow ; legs very numerous ; 

 antennae composed of fourteen cylindrical 

 joints, very slender towards the end; eyes 

 not distinct ; often electrical. 



II. SUB-ORDER.— Chilognaths (Chilognatha). 



Antennae with seven joints, either equal through- 

 out, or more or less thickened near the end ; lower 

 lip single, without curved hooks ; segments of body 

 annular, each with two pairs of legs. 



5. Family. — Woodlouse- Millipedes (Glomeridae). 



Body elongately oval, convex above, arcuate 

 beneath, rolling up in a ball; segments eleven 

 or twelve, semi-lunar, crustaceous, with a 

 lateral scale, the last segment large, concave, 

 semi-circular; feet 16 — 20; antennae very 

 short, sub-moniliform, 7-jointed, the sixth 

 enveloping the last. 



6. Family. — Tufted-Millipedes (Polyxenidae). Body 



soft, elongated, depressed, furnished at the 

 sides with tufts of piliform scales, the hind 

 segment ending in a pencil of ciliated scales ; 

 antennae very short, moniliform, inserted 

 under the front margin of the head ; palpi 

 none. 



N 2 



