116 LABIID.E, 



Tahle of Species. 



1. Forceps ot J contiguous. (Pygidium 



hidden.) nigrella, Dubr., p. 117. 



1.1. Forceps of <S remote at base. 



2. Branches of forceps of S short and 

 strongly curved. Pygidium not pro- 

 minent. 

 3. Forceps of S strongly arched at 



apex, not dilated luzonica, Dohrn, p. 117. 



3.3. Forceps of r^ dilated near base, then [p. 118. 



bent inwards at a right angle .... curvicaiida, Motsch., 

 2.2. Branches of forceps elongate. 

 3. Pygidium long and narrow. 



4. Pygidium tongue-shaped or lanceo- 

 late miicronata, Stal, p. 11 9. 



4.4. Pygidium broad at base, long, nar- [p. 120. 



rowed apically, and truncate. . . . pilicornis, Motsch., 

 3.3. Pygidium short and broad. 



4, Pygidium star-shaped pygidiata, Dubr., p. 122. 



4.4. Pygidium not lobed. 



5. Pygidium square ridens, Borm., p. 121. 



5.5. Pygidium narrowed posteriorly, 



the apex sinuate arachidis, Yers., p. 123. 



The following supplementary key may be useful : — 



1. Small, unicolorous species. 

 2. Brown or chestnut, with dilated and [p. 118. 



bowed forceps curvicaiida, Motsch., 



2.2. Reddish yellow, with ring - shaped 



forceps in S luzonica, Dohrn, p. 117. 



' 2.2.2. Testaceous ; pygidium narrowed pilicornis, Motsch., 



1.1. Variegated species. [p. 120. 



2. Elytra banded. 



3. Elytra with pale transverse shoulder 



stripe nigrella, Dubr., p. 117. 



3.3. Elytra with a longitudinal band .... mucronata, Stal, p. 119. 

 £.2. Elytra unicolorous. 



3. Pygidium of J short and broad ; 

 elytra always short, usually black, 

 sometimes brown, smooth; wings 



always absent arachidis, Yers., p. 123. 



3,3, Pygidium of S square or star-shaped ; 

 elytra long, dark ; wings usually 

 long. 

 4. Pronotum yellow ; wings blackish ; 



legs yellow ridens, Borm., p. 121. 



4.4. Pronotum brown ; wings with 

 yellowish band ; legs with darker 

 shading lyygidiata, Dubr., p. 122. 



