2/8 PHASMIDAE 



4'. Each sex winged. Femora smooth beneath. The 



species belong to the Old World. Tribe 4. Necro- 



SCIDES. (Fig. 159, Calvisia atrosignata.) 



2'. Antennae (at any rate in the females) shorter than the front femora, 



the joints distinct, not more than 28 in number.' The species 



belong to the Old World. 



3. Median segment shorter than the metanotum. Apterous 

 species. Cerci plump. Tribe 5. Clitumnides. (Fig. 160, 

 Eurycantha australis.) 

 o'. Median segment longer than the metanotum. Species usually 

 winged. Cerci (except in some genera of the group Flaty- 

 craninae) flattened, elongate. Tribe 6. Acrophyllides. 

 (Fig. 153, Gyphocrania aestuans.) 

 1'. Tibiae furnished beneath with a triangular apical area. 



2. Antennae many jointed, longer than the front femora. 



3. Median segment shorter than the metanotum. Apterous 

 species.^ 



4. Either head, thorax, or legs sjDiny or lobed. Tribe 7. 



Cladomorphides. (Fig. 149, Hetero])terijx grayi.) 

 4'. Head, thorax and legs unarmed. Tribe 8. Aniso- 

 MORPHIDES. (Fig. 1Q\, Anisomorijha 2)ardalina.) 

 3'. Median segment longer than the metanotum. 



4. Claws unarmed. Tegmina lobe-like, either perfectly 



developed or entirely absent. The winged species are 



all American, the apterous are both African and 



Australian. Tribe 9. Phasmides. 



4'. Claws toothed on the inner side. Tegmina spine-like. 



Wings well developed. The species are Asiatic. Tribe 



10. AscHiPASMiDES. (Fig. \bQ, AscMpasmci catadvomus.) 



2'. Antennae shorter than the anterior femora,- formed of not more 



than 20 joints. Old World species. 



3. Body slender. Apterous. Tri-be 11. Bacillides. 

 3'. Body very broad, lamina-like. Either wings or tegmina 

 present. Tribe 12. Phylliides. (Fig. 155, Phyllium scythe^ 

 male; Fig. 154, idem., female.) 



^ The African and Australian genera Orohia and Paraorobia, although they have 

 a short median segment, are placed in the tribe Phasmides of this division. 



^ This character is evidentl}^ erroneous as regards the males of the genus 



Phyllium. D. S. 



