34 PROCEEDINGS OF THE NATIONAL MUSEUM vol.74 



3. Arista and its hairs snow white, tlio hairs quite dense, and longer than 



usual; wings hyaline, costa fuscous from apex of auxiliary vein to apex 

 of swond, the entire marginal cell between these points fuscous, and with 

 three fuscous fasciae from the dark border, one extending over inner 

 cross vein to middle of wing, one over outer cross vein almost completely 

 over wing, and a broad subapical one which leaves only a narrow hyaline 

 fascia between it and the one over outer cross vein, extending from third 



vein to hind margin, and a narrow white apical border albiseta Bezzi. 



Arista fuscous, paler at base ; wings not marked as above 4. 



4. Length of frons from posterior ocelli to anterior margin less than equal to 



its central width; the brown sufEusiou of wing interrupted by a longitudi- 

 nal pale line in first posterior cell, and two pale transverse interruptions 

 over apical section of third vein, giving it the appearance of being faintly 

 tripunctate with fuscous ; frons with three dark lines. 



submaculipennis Malloch. 

 Length of frons from posterior ocelli to anterior margin about twice as 

 gi-eat as its width at center; the brown suffusion of wing becoming grad- 

 ually less intense from costa to fourth vein, without hyaline interruptions; 

 frons with at most a faint dark central line brunnelcosta Malloch. 



TRIGONOMETOPUS SUBMACULIPENNIS Malloch 



THgonometopus submaculipennis Malloch, Ent. Mitt., vol. 1(J, p. 164. 1927. 



TRIGONOMETOPUS BRUNNEICOSTA Malloch 



Trigonometopus brunnelcosta Malloch, Ent. Mitt., vol. 16, p. 164, 1927, 

 The above two species were described by me in a recent paper on 

 Formosan species. 



TRIGONOMETOPUS ALBISETA Bezzi 



Trigonometopus albiseta Bezzi, Philippine Journ. Sci., vol. 8, p. 317, 1913. 

 I have seen three specimens of this species from Mount Maquiling, 

 Luzon (C. F. Baker). 



LuzoNOMYZA, new subgenus 



I feel that the possession of but one distinguishing character, even 

 such a one as here mentioned, is insufficient to justify the removal 

 of the species to a distinct genus and consequently have suggested 

 only subgeneric rank for the one under discussion. 



Sub genotype. — Trigcynometopus haken Bezzi. 



TRIGONOMETOPUS (LUZONOMYZA) BAKERI (Bezzi) 

 Trigonometopus baker i Bezzi, Philippine Journ. Sci.. vol. 8, p. 318, 1913. 



I have before me three specimens of this species from Mount 

 Maquiling, Luzon (C. F. Baker). The hypopygium is as Figure 28. 



Typical members of the genus Trigonometopus occur in Europe 

 and America. The genotype occurs in Europe. 



Neotrigonometopus, new subgenus 



This subgenus is erected for the reception of the Australian species 

 Trigonometopus fusoifrons Malloch. 



