1882-1 219 



This is "par excellence'" an onion fly, as all the specimens which I have seen 

 have been bred from the bulbs of that vegetable. I suspect it is the same as that 

 named A. ceparum by Bouche, Meigen, and others, which has been mixed up by 

 Schiner with ft. antiqua.* 



I received specimens of this species last summer from Mr. Inehbald, which he 

 had bred from onions, and I also reared several myself from bulbs of the same 

 onions (sent by Miss Ormerod) which produced the specimens of P. cilicrura ; the 

 larva? of both species feeding together, and passing through their transformations at 

 the same time. It is very interesting to add, that a short time since I received both 

 males and females of this fly from Professor Lintner of Albany, U. S., which he had 

 bred from onions in America, and which corresponded in all respects with my English 

 specimens, with the exception of having the legs more piceous or testaceous in 

 colour. 



P. NEGLECTA, Sp. 11. 



Mas,fuscus,piIoxus; thorace linels quinque striata ; ahdomine angusto, maculis 

 trihus triajigularihus, dorso signato ; alls venis tertiis quartisque longitadinalibus 

 versus ap)icibus i^atilo convergenfibus ; tibiis posticis intus nudis. Long. 3 mm. 



Head : eyes large, covering the cheeks, and closely contiguous ; face and epistome 

 only slightly prominent ; antennae rather elongated, the third joint being three 

 times the length of the second ; arista thickened along its basal third, where it is 

 almost bare, but having the apical portion a little pubescent. 



Thorax, with scutellum, gi'ey, sometimes having a glaucous tinge ; it is marked 

 down the dorsum with five stripes, of which the middle and two lateral ones are the 

 widest, the intermediate lines being narrow and sometimes indistinct, when only 

 three broad stripes are visible. 



Abdomen narrow and pointed towards the apex, covei'ed with numerous soft 

 black hairs, and consisting of four distinct segments, of which the first is very short, 

 the second longer than any of the others, and the third and fourth about equal in 

 length ; it is of a dull grey colour, and marked down the dorsum with three large 

 triangular black spots, the bases of which are transversely dilated opposite the upper 

 margins of the second, third, and fourth segments ; the apical joint is very small 

 and pointed, and furnished on its under-surface with two small lamellae, on the outer 

 side of each of which a small black hook or tooth may be observed, projecting back- 

 wards. 



CaJyptra moderately developed, of a dull yellowish- white colour; Halteres 

 orange-yellow. 



Wings slightly nigrescent, costal spine wanting ; costal vein ciliated at the base ; 

 external ti-ansverse vein straight and upright ; third and fourth longitudinal veins 

 diverging from the site of the internal transverse vein, for three-fourths of the dis- 

 tance to the apex of the wing, and then becoming slightly convergent towards each 

 other ; the third longitudinal vein reaching the border exactly at the apex. Legs, 

 with the under-surfaces of all the femora, ciliated with a double row of long fine 

 bristles ; inner sides of hind tibise bare. The female is unknown to me. 



This little well-marked species is generally distributed, but not common. 



* In a former part of this list I placed A. ceparum, Meig., under HyUmyia tibiaria, Rond., l)nt 

 I now believe that I was mi.stakeu in thinking that they were synonymous. 



