20 PROCEEDINGS OF THE NATIONAL MUSEUM vol.74 



KEY TO THE SPECIES 



1. Hairs on arista rather deuse aud not erect, the longest not as long as basal 



width of third autennal segment 2. 



Hairs on arista not dense, erect, and the longest very distinctly longer than 

 basal width of third antennal segment 5. 



2. Face without dark discal spots; a deep black velvety spot between each an- 



tenna and eye ; third antennal segment shorter than usual, not over twice as 

 long as its basal width ; seventh abdominal tergite with a pair of black 



spots sigillata (de Meijere). 



Face vpith n pair of dark discal spots above middle ; no black spot betvpeen 

 each antenna and eye ; third antennal segment elongate, about four times 

 as long as its basal width 3. 



3. Thorax with two series of intradorsocentral hairs, and four or five fine 



brownish lines on dorsum ; fore femur entirely yellow ; abdomen with a 



pair of small round black spots on seventh tergite javana Macquart. 



Thorax with four series of intradorsocentral hairs, and ten fine black lines 

 on dorsum ; fore femur with a black apical mark ; abdomen without a 

 pair of black spots on seventh tergite 4. 



4. Abdomen broadly deep black on dorsum, narrowly yellow on sides. 



decemlineata de Meijere. 

 Abdomen entirely yellow flaviventris, new species. 



5. Facial spots very small and pale brown in color ; wings ciuite intensely yel- 



low along costa sexlineata de Jleijere 



Facial spots larger and deep black ; wings not more noticeably yellow along 

 costa than elsewhere parvipunctata de Meijere. 



PACHYCERIKA JAVANA Macquart 



Pachycerina javana Macquabt Dipt. Exot., Suppl. 4, p. 274, 1850 {8a- 

 fyromyza ) . 



The largest species known to occur in the Orient, readily distin- 

 guished from its allies by the characters listed in the key. The male 

 has a pair of very long basal hypog}^gial forceps which taper 

 apically, and extend forward below abdomen to well in front of its 

 middle. 



I have before me a series of specimens from Baguio, Benquet 

 Province (C. F. Baker). 



PACHYCERINA FLAVIVENTRIS, new species 



This species is very similar to decemJmeata^ being the same in color 

 except in having abdomen entirely yellow. The details in the above 

 key are sufficient to insure its recognition. 



The outer partial black vitta behind suture of thorax, as well as 

 the two black pleural vittae. so distinct in dccemJineata^ are not visible 

 in the type of faviventns. and tlie pair of black spots on face are 

 .smaller than in that species. 



Type.— C^i. No. 41697, U.S,N,M. ; Mount Maquiling, Luzon Prov- 

 mce (C.F.Baker). 



The other species listed in key I have seen only from Java; the 

 species sigillata was described as a Lauxania, but an examination of 



