23.4 Baker: Malayan Jassoidea 395 



sharply elevated, the entire area between this and bordering 

 carina of vertex nearly smooth, the frontal folds scarcely invad- 

 ing it. The very small ocellus lies just within the border carina 

 of vertex, its own diameter distant from this carina, and some 

 four times its diameter from eye. Length of vertex (Plate 5, 

 fig. 40, a) little more than one and a half times interocular 

 width, its surface plane anteriorly, depressed at sides basally, 

 median basal area smooth, remainder finely longitudinally 

 wrinkled. Length of pronotum into that of vertex two and a 

 fourth times, the anterolateral margins much longer than poste- 

 rolateral and into width a little less than four times; surface 

 nearly smooth, with a few widely scattered punctures; hind 

 margin broadly subangularly emarginate. Median basal area 

 of scutellum nearly smooth. Tegmina subacutely pointed at 

 apex of third apical cell, the second apical cell strongly narrowed 

 distad, the third very large, the two cross veins in subcostal 

 area far removed from apical cell, the two apical cross veins 

 nearly in line. Head nearly as wide as pronotum. 



Basilan (Baker). 

 Ophiuchus montanus sp. nov. Plate 5, fig. 41. 



Pale ochraceous, border carina and median carina of vertex 

 brownish; vertex with slender submarginal reddish stripes. 

 Pronotum with a fuscous median line and two broad submedian 

 longitudinal reddish bands which extend across basal angles 

 of scutellum. Tegmina subhyaline, the veins ochraceous, the 

 two cross veins in subcostal area slightly darkened; anal mar- 

 gins and commissural margins of clavus broadly red, these bands 

 extending obliquely from apex of clavus to apex of medial area. 

 Length of male, 6 millimeters. 



Differs from O. basilanus in structure as follows : The ocellus 

 larger, its own diameter distant from border of crown, and 

 about thrice its diameter from eye. Length of vertex (Plate 

 5, fig. 41, a) one and a third times the interocular width, its 

 entire area evenly shallowly depressed, smooth only medially 

 at extreme base, entire remainder of surface finely longitudinally 

 obliquely rugosely wrinkled. Length of pronotum into that of 

 vertex one and a half times, anterolateral margins far longer 

 than posterolateral and into width a little more than three times; 

 posterior two-thirds of surface densely very finely transversely 

 aciculate, with a few scattering punctures at sides. 



Luzon, Laguna Province, summit of Mount Maquiling 

 (Baker) . 



