378 The Philippine Journal of Science i9i6 



arcuate sides of face distinguish it. With a greater knowledge 

 of the character of the spur in other genera, it may prove 

 that this and several allied genera are better placed in the 

 Tropidocephalini. 



Brachycraera albolineata sp. no v. 



Female. — Green or light brownish green, carinse of head and 

 thorax lighter ; a thin transverse white line across gense and face 

 below eyes, antennae brownish, ovipositor brown. Tegmina 

 yellowish, veins slightly darker with small, similarly colored 

 granules. 



Length, 2.8 millimeters ; tegmen, 3.5. 



Luzon, Laguna, Mount Maquiling; Benguet, Baguio (Baker). 



Genus PERKINSIELLA Kirkaldy 

 Perkinsiella KiRKALDY, Entom. (1903), 36, 179. 



This genus is of economic importance in countries where sugar 

 cane is cultivated, as the eighteen species at present known all 

 live upon that plant, as well as on some other grasses. For- 

 tunately several parasites are locally active in keeping down their 

 numbers, or sugar cane could not be grown over the region of 

 their distribution, for a single species (P. saccharicida) intro- 

 duced into the Hawaiian Islands threatened to ruin the sugar 

 industry there until parasites were introduced to hold it in check. 

 Six species are known in the Philippine Islands and can be dis- 

 tinguished by the following characters : 



Key to the Philippine species of Perkinsiella. 



a\ Basal half of face distinctly darker than apical half. 



6\ Granules on tegmina light in color, very small lineata. 



6'. Granules on tegmina dark. 



c\ Posterior half of tegmen dark fuscous saccharivora. 



c'. Dark pattern on tegmen confined to apical cells pseudosinensis. 



a^ Basal and apical halves of face concolorous; a few light spots on face. 

 6*. Median portion of pro- and mesonotum distinctly lighter than lateral 



portions _ bakeri. 



b'. Median portion of pro- and mesonotum not distinctly lighter than 

 lateral portions, 

 c'. Tegmina light fuscous brovm, granules on veins dark brown, large. 



fuscipennis. 

 c\ Tegmina not fuscous; granules on veins very minute, light. 



vastatrix. 

 Perkinsiella vastatrix (Breddin). 



Dicranotropis vastatrix Breddin, Deutsch. Ent. Zeitschr. (1896), 107. 

 Common on sugar cane. Philippine specimens agree in colora- 

 tion with specimens from Java. 



