2/8 PHASMIDAE CHAP, xi 



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.) 



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

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

 craninae) flattened, elongate. Tribe 6. ACROPHYLLIDES. 



(Fig. 153, Cyphocrania 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. 1 



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



CLADOMORPHIDES. (Fig. 149, Heteropteryx grayi.) 

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



MORPHIDES. (Fig. 161, Anisomorpha pardalina!) 

 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. 1 50, Aschipasma catadromus.) 



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



than 20 joints. Old World species. 



3. Body slender. Apterous. Tribe 1 1. BACILLIDES. 

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

 present. Tribe 12. PHYLLIIDES. (Fig. 155, Phyllium scythe, 

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



1 The African and Australian genera Orobia and Paraorobia, although they have 

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



2 This character is evidently erroneous as regards the males of the genus 

 Phyllium. D. S. 



