X, D, 1 Baker: Philippine Jassoidea 57 



tended, slightly emarginate between 2 acute projections, lateral 

 to which the margin is suddenly oblique. 



Luzon, Laguna, Los Baiios and Mount Maquiling (Baker). 



The splitting of the median carina of vertex, so distinct in 

 this species, is very faintly suggested in /. conspersus. 



Jassus philippinensis Stal. 



Easily recognized by the large pale transverse spots on apical 

 two thirds of tegmina, which, however, entirely lacks yellow- 

 ish interruptions on the veins. Face brownish above; below, 

 with fore and middle legs, yellowish. The males are uniformly 

 a little paler in general color than the females. The propleurae 

 are largely shagreened and have 2 small smoother areas poste- 

 riorly. Structure of vertex very similar to that of J. luzonensis, 

 but here the central raised sulcus is still more marked and much 

 wider posteriorly, and the rugae on the surface of vertex are 

 stronger. The tubercles on the pronotum are weak, their color 

 running together in transverse groups, the surface between not 

 rugose. Scutellum nearly smooth. Tegmina very smooth. 



Luzon, Laguna, Los Baiios and Mount Maquiling (Baker). 

 Abundant. 



Genus THARRA Kirkaldy 



On the mossy-forest summit of Mount Maquiling at 3,600 

 feet altitude we find abundant a very peculiar member of this 

 division, evidently not a true Jassus, which I at first took to 

 represent a new genus near Soortana of Distant. I had been 

 unable to get any clear understanding of the Tharra of Kirkaldy, 

 but it appears plain now that this species pertains to that generic 

 group. The venational characters given for the genus by Kirk- 

 aldy are without generic significance. A figure published by 

 the Hawaiian Sugar Planters' Association ^ is apparently in- 

 tended to illustrate a member of this genus, although I can find 

 no reference to it in the text. The figure, however, shows well 

 the remarkable structure of the head. The species previously 

 described are all Fijian and Australian, and it is a most inter- 

 esting discovery to find a representative in Luzon. Others will 

 doubtless be found in intervening islands.^ Evidently our 

 species closely resembles T. labena, the type of the genus, from 

 Queensland. 



^ Bull. Hawaiian Sugar Plant. Assoc, Div. Ent. (1907), 3, PI. II, fig. 16. 

 * Collection made since the above was written show peculiar species to 

 exist in Negros and Mindanao, and others in Luzon. 



