23,4 Baker: Malayan Jassoidea 367 



a remarkable uniformity. It is probable that each island and 

 distinct geographical subregion will furnish its own peculiar 

 form of this plastic species. One of these forms has already- 

 been described under the name mindanaensis. 19 Three more 

 are presented herein. The relationship of any of these forms 

 to Pythamus dealbatus Melichar will remain an open question 

 until that species can be reexamined. 

 Pythamus melichari Baker var. bilobatus var. nov. Plate 2, fig. 13. 



Lower parts largely ochraceous, upper parts largely black. 

 Face and clypeus slightly brownish, the lateral margins of 

 front and basal lateral margins of clypeus blackish. Mesopleura, 

 dorsum of abdomen except basal lateral margins, outer margins 

 of anterior tibiae, and ovipositor black. Vertex with a narrow 

 irregular transverse band, broader laterally before apex, and 

 a small oval spot next each eye, yellowish lateral margins of pro- 

 notum, apex of scutellum, and two dots just before it yellowish. 

 Extreme base of tegmina yellowish, an albescent subcostal 

 spot next this, a larger oval albescent spot on subcostal stripe 

 at middle extending halfway across corium and with a narrow 

 band extending from its inner margin to claval suture; apical 

 margin broadly albescent; remainder of tegmina black. Length 

 of female, 6.25 millimeters. 



Length of face (Plate 2, fig. 13, c) one and a half times width 

 across eyes. Front, clypeus, and lorae shagreened throughout, 

 the genge smooth. The subocellar carina is as strong as the 

 supraocellar and curves downward to opposite the supra-antennal 

 carina and twice length of latter from eye; from halfway be- 

 tween the extremity of the subocellar carina and the antennal 

 scrobe a strong vertical carina passes along the line of the frontal 

 suture, then toward the ocellus; in the triangular area between 

 these carina and the supraocellar there are about fourteen 

 transverse wrinkles, the alternate spaces between which are 

 finely rugose; supra-antennal area finely transversely wrinkled. 

 Ocellus touching the normal supraocellar carina and a little 

 more than three times its diameter from eye. Laminate carina 

 of vertex more strongly raised at middle and anteriorly than 

 posteriorly. Lateral concavities of vertex deepest at middle, 

 sloping rapidly upward to carinas in all directions and concen- 

 trically wrinkled throughout. Length of vertex a third greater 

 than width between eyes. Pronotum (Plate 2, fig. 13, a) nearly 

 as long as vertex, the anterolateral margin into width a little 



"Philip. Journ. Sci. § D 10 (1915) 200. 



