2 ORTHOPTERA 



Epilampra not only are the diagnoses of the species for the most part very vague, but the species them- 

 selves are remarkably uniform and often can only be separated with difficulty. Brunner von Wattenw}'l 

 with his usual perspicacity has indicated one character which seems to be of great value in dividing 

 Epilampra into two sections : i° with the pronotum punctate, 2° with the pronotum smooth; if these two 

 types of pronotal structure can be shewn to be correlated with definite tarsal differences, the commence- 

 ment of a reliable subdivision of Epilampra will have been made. Kirby has sepaiated off the Old 

 World species of Epilampra to form a genus Heterolampra, but this genus is described so vaguely that the 

 New World species fit into it as readily as the Old World species. In spite of a careful scrutiny of a 

 considerable number of species I can find no characters whereon to base a division in accordance with 

 geographical limits and for the present I leave Epilampra very much as it has been since iSgS. 



b 



KEY TO THE GENERA 



I . Tarsi very short, posterior metatarsus mucli shorter than the suc- 

 ceeding joints. 

 2. Form convex. 

 3. Pronotum anteriorly produced covering the vertex of the head. 



Wings with normal venation i. Genus Phoraspis, Serville. 



3'. Vertex of head exposed. Wings 7i>hen present loitli abnormal 

 venation. 



4. Wings 'u<ith triangular apical area 2. Genus Notoi.ampra, Saussure. 



4'. Wings without triangular apical area. 

 5. Wings fully developed in both sexes. Anal vein of tegmina 



absent in both sexes 3. Genus Thorax, Saussure. 



5'. Wings reduced, rudimentary or absent in 9- Anal vein of 



tegmina present in cf 4. Genus Phi.ebonotus, Saussure. 



2'. Form depressed. 

 3. Tegmina and icings fully developed in both sexes. 

 4. Pronotum posteriorly sub-truncate. Tarsi fimbriate beneath . . 5. tjenus Pinaconota, Saussure. 

 4'. Pronotum posteriorly produced. Tarsi not fimbriate beneath. . 6. Genus Apsidopis, Saussure. 



i' . Tegmina truncate, quadrate. Wings absent 7. Genus Compsoi.ampra, Saussure. 



i'. Tarsi longer, posterior metatarsus longer than, equal to, or very 

 little shorter than the succeeding joints. 

 2. Posterior metatarsus entirely unarmed beneath. 



3. Pronotum obtusely produced posteriorly 8. Genus Morphna, nov. gen. 



y . Pronotum truncate posteriorly 10. Genus Homalopteryx, Brunner von 



2'. Posterior metatarsus spined beneath. [Wattenwyl (pars). 



3. Posterior metatarsus armed with spines beneath only at the base, 

 its pulvillus produced towards the base of the joint. 

 4. Sexes similar. 

 5. Tegmina and wings fully developed in both sexes .... 10. Genus Homalopteryx, Brunnervon 



[Wattenwyl (pars). 



5'. Tegmina and tmngs reduced to squamiform rudiments . . . 11. Genus (Jpisthoplatia, Brunnervon 



[Wattenwyl. 



4'. Sexes dissimilar 9. Genus Molytria, Stal. 



3'. Posterior metatarsus armed with spines beneath throughout the • 



greater part of its length, its pulvillus apical. 



