266 MANUAL OF NATURAL HISTORY. 



I. ORDER. MYRIAPODS (Myriapoda). 



Eyes compound and granular; mandibles for 

 cutting and bruising their food ; no true jaws ; 

 sometimes two false labial palps ; body elongated, 

 formed of numerous rings, not divided into regions; 

 feet more than six, often very numerous. Animals 

 free. 



I. SUB-ORDER. CHILOPOVS (Chilopoda). 



Antennae with four or more joints, tapering to- 

 wards the extremity ; lower lip double ; segments 

 flattened, each with one pair of feet. 



1. FAMILY. Shielded - Centipedes (Cermatiidae). 



Body elongated, linear, depressed, with about 

 eight imbricated coriaceous shield-like plates 

 above, below divided into fifteen segments ; 

 antennae setaceous, many-join ted, much longer 

 than the head ; mandibles two ; palpi slender, 

 exserted, spinulose ; legs very long, slender, 

 tarsi many-jointed. 



2. FAMILY. Stone-Centipedes (Lithobiidae). Anten- 



nae setaceous, a little longer than the head, 

 seven or more jointed; mouth as in Scolo- 

 pendra ; body elongated, linear, depressed, 

 equally divided above and below, the upper 

 dorsal plates alternately larger and smaller ; 

 legs moderate. 



3. FAMILY. True - Centipedes (Scolopendridae). 



Body elongated, linear, depressed, equally 

 divided above and below ; segments nume- 



