XII. D, 2 Muir: Derhidx of the Philippine Islands 63 



Lamenia croceus (Muir) . 



Thyrocephalus croceus MuiR, Bull. Hawaiian Sugar Plant. Assoc, 

 Div. Ent. (1913), 12, 39. 



One pair from Mindanao, Davao (Baker), which I provision- 

 ally place under this species. In color and size it is similar to 

 the following species (L. pallidinervis) from which it differs in 

 the shape of its genitalia. 



Ventral edge of pygophor straight, lateral edges obtuse-angu- 

 larly produced, length of anal segment not quite thrice the width, 

 sides subparallel, apex rounded, lateral edges near apex turned 

 ventrad in the shape of an obtuse angle with acute apex, genital 

 styles long and narrow, edges subparallel to near the rounded 

 apex, apical portion curved slightly dorsad, two small knobs 

 arise from middle of inner surface near base, one of which is 

 studded with minute spines. 



Mindanao, Davao (Baker). 



Lamenia pallidinervis sp. nov. 



Male. — Reddish yellow, carinse of face, labium, tarsi, and 

 dorsum of abdomen slightly fuscous. Tegmina hyaline tinged 

 with yellow, veins lighter. 



Ventral edge of pygophor straight, lateral edge angularly 

 produced, which is subacute and longer than the width at base; 

 anal segment long and narrow, length slightly less than thrice 

 the width, sides parallel to near the rounded apex, anus a little 

 basad of the middle, in profile the ventral edge entire; genital 

 styles long and narrow, gradually narrowing to the acute apex, 

 which is turned dorsad and inward; edges entire, a stout, acute 

 spine arises from the middle of the inner surface, and a small 

 round knob near the base. 



Length, 2.5 millimeters; tegmen, 4.3. 



Female. — Similar in color and size to the male. Pregenital 

 sternite triangular, the sides sinuous. 



Mindanao, Zamboanga (Baker). 



Genus NEOLAMENIA novum 



This genus differs from Lamenia in having the second antennal 

 joint as long as the face, broad, slightly flattened, sides sub- 

 parallel, apex truncate, subantennal plate forming a narrow 

 ledge below antenna; the basal half of clypeus forming an 

 oblong disk, slightly depressed mediolongitudinally, the lateral 



