536 



Transactions of the Society. 



terminate rather abruptly in a small point, or snout. The arrange- 

 ment is not very satisfactory ; in GonolaMs we have an approach 

 to the form of Mongolahis, in which also the same form of the 

 abdomen appears. 



It will be noticed that I place in one genus the full-winged 

 '•' Psalis" dohrni, the apterous A. owenii and iiervicina, and the 

 E. greeni, with much reduced rudimentary elytra. 



The following arrangement is suggested : — 



1. Metaparameres acuminate. 



2. Metaparameres broadest in middle. 



3. Abdomen 6 strongly dilated poste- 

 riorly ; (apterous ; Oriental and 

 Australian genus) 

 3, 3. Abdomen not strongly dilated poste- 

 riorly ; (fully winged or brachy- 

 pterous ; Neotropical genus) 

 2, 2. Metaparameres broadest at the base or 

 quite near it ; (apterous genera). 

 3. Metaparameres broadest at the base 

 itself, then narrowing, externally 

 bisinuate ; (Neotropical genus) . 

 3, 3. Metaparameres broadest just be- 

 yond the base ; external margin 

 sinuate ; (Old World genus) 



1,1. Metaparameres not acuminate. 



2. Metaparameres rounded at tips. 



3. Metaparameres broadly rounded at 

 tips ; (elytra rudimentary ; Indian 

 genus) ..... 



3, 3. Metaparameres gradually narrow- 

 ing to the tips, which are rounded 

 by the convexity of the external 

 margin ; (African and Oriental 

 genus) ..... 



2, 2. Metaparameres ending at the tips them- 

 selves in a small point or snout ; 

 (apterous). 

 3. Abdomen broadest before the apex 

 3, 3. Abdomen broadest at the apex 

 itself ; (Oriental genus) 



1. Eulabis Zacher. 



2. Spandex g. n. 



3. Metalabis g.n. 



4. Apolabis g.n. 



5. Epilabis g. n. 



6. Paralabis g. n. 



7. Gelotolabis Zacher. 



8. Gonolabis Burr. 



EXPLANATION OF PLATE XI. 



FIG. 



1. Anisolabis kudagas Burr. 



2. A. mauritanica Luc. 



3. Eulabis kirbyi Burr. 



4. E. michaelseni Burr. 



5. Spandex pulcher Rehn. 



6. S. hsenscJii Burr. 



7. Metalabis saramaccensis Zacher. 



8. Apolabis picea Bor. 



9. A. vicina Burr. 



FIG. 



10. Apolabis hottentotta Dohrn. 



11. A. turgida Burr. 



12. A. isomorpha Bor. 



13. A. Iseta Gerst. 



14. A. marginalis Dohrn. 



15. Epilabis penicillata Bor . 



16. Ditto, ditto. 



17. E. sisera Burr. 



18. Ditto, ditto. 



