26 PHILIPPINE DIPTERA, II 



cross vein situated on its first third; first posterior cell very 

 long and narrow and rather narrowed at end; cross vein at 

 end of the fourth posterior cell short and parallel with the pos- 

 terior cross vein ; stalk of the anal cell shorter than that of the 

 fourth posterior cell. Veins black. 



LUZON, Tayabas, Mount Banahao (Baker) . 



145. Promachus forcipatus Schin. 1868. 



Los Banos and Mount Maquiling, Laguna, and Baguio, Ben- 

 guet. A common endemic species, very characteristic by the ex- 

 traordinary shape of the male genitalia. 



146. Promachus bifasciatus Macq. 1838. 



One female specimen from Cagayan, Mindanao. Known from 

 Celebes and Java and new for the Philippines, but it is probably 

 the species of which Osten Sacken says : "Resembles bifasciatus 

 Macq., but is certainly different." The present specimen belongs 

 surely to this species so far as can be judged from females only. 



147. Systropus 9 valdezi sp. nov. 



Qne female specimen from Baguio, Benguet. Named in honor 

 of Julian Valdez y Hernandez, Professor Baker's Cuban collector. 



Nearly allied to the species that in the first century, No. 17, 

 I assumed to be S. sphecoides Walker, but differing in the pat- 

 tern of thorax, which shows four yellow spots at the four angles 

 of the dorsum, and in the legs being much more yellow. 



Female. Length of body, 16 millimeters; of wing, 13. Oc- 

 ciput black, gray-dusted; ocellar tubercle dark reddish; eyes 

 less produced above, united for a distance as long as the frontal 

 triangle; the latter blackish, white-dusted on middle, yellow 

 below on the antennal tubercle; face pale yellow, with whitish 

 hairs; jowls whitish with shining white dust and with hairs; 

 mentum yellow, with long whitish beard. Antennae black, the 

 first joint narrowly yellow at base, with blackish hairs, more 

 than three times as long as the second; third joint wanting in 

 the type. Palpi yellowish ; proboscis black, but reddish below on 

 the apical half. 



Thorax black, opaque, finely punctulate, with three less dis- 

 tinct, broad, longitudinal grayish stripes; humeral calli yellow, 

 and above them a broad yellow stripe, which is produced inward, 

 reaching almost the middle line of dorsum ; on the postalar calli 

 there is a broad, triangular yellow spot; pleurae black, gray- 



8 This generic name was misprinted in the first century, Phil. Journ. 

 Sci., Sec. D (1913), 8, 313. 



