18 (17) Dorsum of all but last segment bearing spatulate tuber- 

 cles or short spines arranged in about 10 conspicuous 

 longitudinal or diagonal rows; last segment with a 

 mid-dorsal longitudinal ridge and lateral margins 

 bearing spatulate tubercles (Figs 153, 154, 155): Hetevelmis 

 Dorsum without such spiny tubercles, although there 



may be rows of small, flat tubercles 19 



151 



Figs 151-155 Larva of Anoyronyx variegata: 151- dorsal aspect; 

 152- ventral aspect. Larva of Hetevelmis vulnerata: 153- dorsal 

 aspect; 154- lateral aspect; 155- ventral aspect. 



19 (18) Anterior margin of head on each side with a distinct 



frontal tooth (Fig . 13) 22 



Anterior margin of head without distinct frontal tooth 20 



20 (19) Dorsum with relatively conspicuous, flattened tubercles 



often arranged in longitudinal rows; abdominal tergites 

 often with mid-dorsal pale spots; last segment with a 



weak mid-dorsal longitudinal ridge 21 



Tubercles of dorsum inconspicuous, not arranged in longitu- 

 dinal rows; without mid-dorsal pale spots; last segment 

 convex dorsally, without median ridge (Figs 159, 160) : 



Eeoetmis 



21 (20) Last abdominal segment conspicuously long and slender (3 



times longer than wide) ; mid-dorsal spots widest near 

 middle of each segment; dorsal tubercles not arranged in 

 parallel longitudinal rows: Hexaaylloepus 



Last segment not unusually long or slender; mid-dorsal spots 

 widest near posterior of segments; dorsal tubercles 

 partially arranged in parallel longitudinal rows (Figs 

 156-158) : Miorocylloepus 



60 



