xv, i Baker: The Malayan Machxrotinx 75 
Grypomadiasrota tricolor sp. nov. 
Female . — Length to end of abdomen, 4 millimeters; to end of 
tegmina, 5.5; to end of spine, 6.5. 
Color black, with red-brown spine, short yellow lateral marks 
and narrow yellow posterior border of scutellum; tegmina with 
pieeous veins, these apically smoky bordered. 
Frons shining, minutely, irregularly, transversely rugose, a 
sharp median carina only on upper fourth where the lateral 
margins of appendage are very shortly carinate ; clypeus coarsely 
rugose. Vertex strongly transversely wrinkled, with a short 
double median carina near apex ; lateral areas of frontal portion 
of vertex convexly rounded. Pronotum thickly, very coarsely 
reticulate-punctate, more weakly near fore margin, the retic- 
ula sharp; a weak median carina on apical third only; the 
four small depressed areae near fore margin rather narrow and 
elongate. Scutellum sculptured like pronotum ; the furrow short, 
broad apically, and very shallow; lateral surfaces of scutellum 
below furrow strongly depressed ; the lateral depressions on base 
of spine very deep, foveate; apex of spine 2 millimeters above 
apex of tegmina. 
This very distinct species occurs at Sandakan, British North 
Borneo. 
Grypomaehserota breviceps sp. nov. 
Length to end of abdomen, 3.5 millimeters; to ends of tegmina 
and of spine, 5. 
Black, with red-brown spine, short lateral yellow marks on 
scutellum and short yellowish posterior border; legs brownish; 
tegmina apically suffused with stramineous and with brownish 
veins; corium transparent, with pieeous veins. 
Frons shining, finely transversely rugose, entirely without 
median carina, and with upper lateral carinse of appendage very 
weak; clypeus more coarsely sculptured. Vertex finely trans- 
versely wrinkled and without median carina. Pronotum and 
scutellum sculptured as in G. tricolor; sides of scutellum below 
furrow not strongly or broadly depressed, the posterior sub- 
marginal impressed line in this species being a long, broad 
fovea; base of spine laterally not deeply foveate; the very 
strongly curved spine approaches ends of tegmina within a half 
millimeter, and does not pass the ends of tegmina, thus differ- 
ing from all other Malayan Machserotini. 
Specimens of this species were collected on Penang Island, 
