464 PROCEEDINGS OF THE NATIONAL MUSEUM 



Figures 150-170. — Phytomyza species. Heads are shown in profile. 

 The solid line equals 1 mm. 



Fig. 150. — Head of holotype ? of Phytomyza dura Curran. 



Fig. 151. — Wing of same, one-half size. 



Fig. 152. — Head of holotype ? oi P. flavinervis Frost. 



Fig. 153. — Head of lectotype cf of P. genalis Melander. 



Fig. 154. — Head of lectotype ? of P. ilicicola Loew. 



Fig. 155. — Wing of same, one-half size. 



Fig. 156. — Head of paratype c? of P. lactuca Frost. 



Fig. 157. — Head of lectotype $ of P. loezvii Hendel. 



Fig. 158. — Wing of same, one-half size. 



Fig. 159. — Head of holotype 9 of P. marginalis Frost. 



Fig. 160. — Head of holotype c? of P. inelanella Frost. 



Fig. 161. — Head of P. minuscula Goureau (lectotype cf" of P. nitida Melander) 



Fig. 162. — Wing of holotype ? of P. nervosa Loew, one-half size. 



Fig. 163. — Head of holotype cf of P. nigrincTvis Frost. 



Fig. 164. — Head of paratype 9 of P. plumiseta Frost. 



Fig. 165. — Wing of same, one-half size. 



Fig. 166. — Head of holotype 9 of P. subtenella Frost. 



Fig. 167. — Wing of same, one-half size. 



Fig. 168. — Head of holotype cf of P. trivittata Frost. 



Fig. 169. — Wing of same, one-half size. 



Fig. 170. — Mesonotum of same. 



