PHILIPPINE DIPTERA, II 15 



curved upward. Coxae entirely light yellowish, the tarsi dark- 

 ened at end ; front and middle femora without bristles at base 

 beneath. Wings long and narrow, pale yellowish along the 

 costa and hyaline, iridescent on the remainder; the brown 

 markings are as figured by Edwards for T. speiseri 4 with the 

 following differences : The middle brown patch extended over the 

 second longitudinal vein and from it a narrow fuscous border 

 extending along the veins to the end of the anal cell ; the brown 

 apical patch not extended over the first posterior cell, which is 

 hyaline in the middle, and has no cleap spot in the middle of the 

 second marginal cell. 



LUZON, Laguna, Mount Maquiling (Baker). 



120. Styringomyia ceylonica Edw. 1911. 



Specimens of both sexes from Los Banos and Mount Ma- 

 quiling. This strange insect is recorded from Ceylon, India, and 

 Formosa; it is nearly allied to S. didyma Grimshaw from 

 Hawaii and Java. 



Key to the Philippine species of the genus Libnotes Westwood. 



The genus Libnotes seems to be very rich in endemic species ; 

 those known from the Philippine Islands all have the marginal 

 cross vein elongated, with the exception of L. familiaris, which 

 is also found in Java ; in this last island the opposite is the usual 

 case. No species with punctate or variegated wings occurs in 

 the Philippine Islands, so far as is known. 



a 1 . Marginal cross vein short, perpendicular, forming a right angle with the 

 first longitudinal vein; base of second posterior cell more drawn 

 inward than that of third; thorax ochraceous, with a middle, longi- 

 tudinal black line; wings hyaline; legs yellowish familiaris O. S. 



a 3 . Marginal cross vein long, placed obliquely, seemingly the prolongation 



of the first longitudinal vein incurved toward the second. 

 b\ Wings hyaline, with a more or leas intensive yellowish tint; body 



entirely ochraceous, without black markings. 



c 1 . Wings with a very faint yellowish gray tint, only a little more in- 

 f uscated at fore border and apex ; bases of second and third poste- 

 rior cells on the same line - opaca sp. nov. 



c 2 . Wings with an intensive yellow tint and with a brown border around 

 the apex; base of third posterior cell more drawn inward than 



that of second marginalis sp. nov. 



6 2 . Wings brown or blackish; body bright orange, with deep black mark- 

 ings; bases of second and third posterior cells on the same line; legs 

 blackish. 

 (f. Wings brown, with a distinctly darker apex; abdomen with only the 



tip black termitina 0. S. 



d\ Wings uniformly blackish; abdomen almost entirely deep velvet- 

 black semperi O. S. 



4 Ann. & Mag. Nat. Hist. (1913), VIII, 12, 204, fig. 2. 



