124 



SECOND ANNUAL REPORT OF 



[Fig. 92.] Eiux Bastardi (?)— Larva— (See Fig. 92.) Length 1.05 inches. Only twelve joints, 

 jL the three anterior and the three posterior ones tapering gradually, the rest of equal width ; 

 tt^X slightly depressed ; translucent yellowish-white, the chitinous covering tolerably lirm how- 

 ever ; a swollen lateral ridge ; two rufous dorsal spiracles on joint 1 and two similar ones on 

 joint 11. Head dark brown, very retractile, pointed, divided at tip into two mandibulate 

 points, and having two unguiform appendages ; anal segment with two depressed longitudi- 

 nal lines above, ridged on anterior edge and with a central depressed line below. It make* 

 use of its head in crawling. 



Pupa — (Fig. 93 b). Stout, honey-yellow; the leg and wing-sheaths soldered together though 

 separated from the abdomen ; eyes large and dark ; head with two large brown spines in 

 front, and a lateral set of three rather smaller ones ; thorax with two small thin rounded 

 dorsal projections and a set of two small lateral spines just behind the 

 head; abdomen, with each segment ridged in the middle and furnished 

 on this ridge with a ring of brown blunt thorns sloping backwards ; 

 anal segment with a few rather stouter spines. 



Two specimens, one found by Mr. Q. C. Brodhead of Pleasant Hill, 

 Mo., under a peach tree, the other by Mr. G. Pauls of Eureka, Mo., un- 

 der a " creeping vine" of which he did not know the name. They were 

 found full grown in May, and gave out the flies the fore part of July. 

 Both produced $ $ , on which account the species cannot be determined 

 with absolute certainty. Osten Sacken informs me that it is allied to 

 tabescens Loew, but is different. It is marked lictor in my MS., but from 

 Macquart's description of Bastardi, and from tf and $ specimens of that 

 species kindly furnished by Dr. Le Baron, I feel pretty confident that it is 

 $> of that species, which is described as follows : Abdominis segmentis tribus apicalibus invent (f; 

 omnibus srynentis nlbido marginatis $. Pedibus nigris : tibiis rufis : alis Jlavidis. Longr. 7£ 1. 

 He then adds : "Face and front black with gray down ; moustache with the upper half black and 

 lower half white; as also the beard. The middle band of thorax divided. The first four seg- 

 ments of the abdomen with the posterior and lateral borders whitish. Extremities of the legs 

 black. From North America. From 3 tf, I have seen one which had the four terminal segments 

 of the abdomen white." My females accord very well with this description so far as it goes, 

 though I cannot see why Macquart restricts the whitish borders to the first four segments in the 

 French description, when in the Latin it is stated that all the segments are so bordered, which i* 

 the case with my specimens. 



