378 The Philippine Journal of Science 1923 



Pronotum also coarsely subobsoletely transversely wrinkled on 

 posterior area (as also on basal area of scutellum) ; length less 

 than that of vertex, the anterolateral margin into width about 

 three and a half times. Venation (Plate 3, fig. 23) similar to 

 that of Balbillus albellus but first (inner) apical cell larger, 

 second and third apical cells distinctly broadened distad, and 

 fourth strongly narrowed distad; marginal vein indistinct 

 around apex. Hind margin of subgenital plate of female with 

 a deep narrow median slit. 



Straits Settlements, Singapore (Baker). The year 1918 

 spent in Singapore as assistant director of gardens, in associa- 

 tion with a wonderful observer in the person of the director, 

 Mr. I. H. Burkill, brought to my attention a world of marvelous 

 biological novelties. The unique lecaniids living inside of twigs 

 of Macaranga under the care of ants, many astonishing cases of 

 ant-plant associations (in one of the latter cases accompanied 

 by a symbiotic brenthid)— all of these and more can be studied 

 to great advantage in the Botanic Gardens of Singapore. Not 

 among the least of these interesting things do I count this 

 beautiful little Stenotortor. In the economic gardens, near the 

 office, stood a fine large introduced tree, Inocarpus edulis, of the 

 Leguminosse, the "Otaheite chestnut," supposed to have come 

 from Polynesia. In passing beneath it from day to day, my 

 attention was called to little red objects, tightly appressed to the 

 surface of the leaves, and these I passed by for some time, 

 supposing them to be scale insects affected by a red parasitic 

 fungus, such affected scales being common in the gardens. One 

 day, reaching up and touching one of them, I was astonished 

 to see it leap quickly away. Closer examination revealed this 

 unique jassoid insect. I do not know of any other adult jassid 

 that can apply itself so closely to the leaf surface, although this 

 habit is not uncommon among nymphs. The shade of its color 

 is almost exactly that of the common scale fungus. It is thickly 

 covered with brick red waxy powder which does not rub off 

 easily. At rest on the leaf, the tegmina are much more widely, 

 tectiformly outspread than in the mounted specimen. It will 

 doubtless also be found on native Singapore Leguminosaa. 



NIRVANIIN^E 

 Synopsis of genera. 

 a 1 . Interocular portion of vertex never parallel sided; vertex broad, width 

 between eyes greater than half width of pronotum, the latter never 

 strongly narrowed cephalad; clypeus gradually a 1 

 a broad subtruncate or slightly notched apex. 



