AGROMYZA, 



241 



of many kinds of trees and herbs, which are discoloured by their 

 ravages. Mr. Hardy and M. Goureau have investigated the ha- 

 bits of several species, which are here mentioned, with the plants 

 which they infest : — 

 Agromyza Macquarti, Goureau, feeds on Verhascum Thapsus. 



Irseos, Desv. 



5, Medicaginis, Desv. 



„ maura, Me/t/. 



„ pusilla, Me/'g. 

 Phytomyza AquifoUi, Goureau, 



„ Lonicerfe, Desv. 



„ Pi'imulse, Desv. 



,, Aquilegiee, Desv. 



„ Thapsi, Desv. 



„ Xylostei, Desv. 



„ Lappse, Goureau, 



„ Sonchi, Desv. 



,, Spliondylii, Desv. 



„ Ranuncuh, Desv. 



„ Scolopendri, Desv. 



,, geniculata, Mcq. 



lateralis, Fal. 



Plantaginis, Desv. 



Iris Pseudacorus. 



Medlcago sativa. 



Crejns biennis. 



Euphorbia Cyparissias. 



Ilex Aquifolium. 



Lonicera. 



Primula grandiflora. 



Aquilegia vulgaris. 



Verbascmn Thapsus. 



Lonicera Xylosteum. 



Arctiimi Lappa. 



Sonchus oleraceus. 



Heracleum Spliondylium. 



Ranunculus acris. 



Scolopendriuni. 



Tropaolum capucvmmi, Pisum 

 sativum, Crambe niaritima, 

 Papaver orientale, Matrica- 

 ria officinalis, CheirantJius 

 Clieiri, etc. 



Sonchus oleraceus and Leucan- 

 them um Chrysan them urn . 



Plantago lanceolata. 



Discal transverse vein ■ 



' beyond the prBebrachial transverse . . 

 in a line with the prsebrachial transverse, 



1. Agromyza. 



2. Phytomyza. 



Genus I. AGROMYZA. 



Agromyza, Fal. Agromyz. (1823) ; Meig. ; Mcq. ; Wcstw. ; Zett. 



Corpus parvura aut minimum, convexum, breve, subsetosum. Antenna? 



breves ; articulus tertius rotund us ; arista setiformis, gracilis, nuda. 



Thorax subellipticus. Ala mediocres ; vena discalis transversa pree- 



hrachiali transversa disjuncta. Abdomen plerumque breve. Pedes 



graciles ; ungues et onychia minima. 



Body small or very minute, convex, short, thinly beset with bristles. 

 Head generally narrower than the thorax. Eyes rather small, or of 

 moderate size. Antennae short ; first and second joints very small ; 



VOL. II. 2 I 



