xv - 1 Baker: The Malayan Machxrotinse 75 



Grypomachaerota 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 

 piceous 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 shoit 

 double median carina near apex; lateral area? 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 area? 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. 



Grypomacliserota 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 piceous 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 Machaerotini. 



Specimens of this species were collected on Penang Island, 



