﻿OF THE STATE ENTOMOLOGIST. 95 



Radish etc., have received different names as hrassicce, ceparum,, 

 7'ap/iafii, etc., but several of them doubtless constitute but one 

 species. A comparison of those reared from the locust eggs with the 

 descriptions of hrassicca and ceparuin has not enabled me to discover 

 any constant differences, and they should perhaps all be referred to 

 radicum Linn. At all events I feel that it is safest to define the insect 

 under consideration merely as a variety of that species, leaving the 

 proper determination of it to the future monographer of the genus. 



The probabilities are that, feeding normally on the roots of various 

 plants, it found locust eggs to its liking, and multiplied rapidly as a 

 result of the abundance of such eggs. 



Antiiomyia kadicum (Linn.) var. caloptejsi — Egy — Oval, smooth, white, 0.04 inch 

 long. 



Larva — Skin unarmed, 0.24 inch long when extended, of the normal form, the 

 mandibular hooks black, quite conspicuous, and diverging at base. Prothoracio 

 spiracles elongate. Anal spiracles minute, yellowish-brown, with the 8 fleshy sur- 

 rounding tubercles, small. 



Pupa — Pale-brown, rounded at each end, with the prothoraeic spiracles and lips 

 anteriorly, and the anal spiracles and lower tubercles posteriorly, showing as minute 

 points. 



Imago — $. Average expanse 0.48 inch. General color ash-gray with a ferruginous 

 hue, especially above, and a more or less intense metallic reflection. Face with white 

 reflections below ; eyes smooth, brown, encircled by the ground color, and this behind 

 and on forehead bordered by a brown line ; 2 similar lines at back of head from upper 

 corners of eyes and approaching to neck; forehead dusky-brown, becoming bright 

 yellowish-red toward base of antennre, and the brown forking at right angles around 

 ogciput. Trophi and antennie black, the style simple and somewhat longer than the 

 whole antenntC. Thorax with three dusky longitudinal lines, obsolete behind ; legS 

 black, with cinereous hue beneath ; wings faintly smoky, with brown-black veins, 

 the discal cross-vein straight and transverse, the outer one bent and more oblique ; 

 balancers crumpled, yellowish. Abdomen with faint dusky medio-dorsal spots, broad 

 at base, tapering and obsolescing toward end of each joint. 



In the d", aside from the larger eyes, stronger bristles, and narrovver, less tapering 

 abdomen with its additional joint— all characteristic of the sex — the face is whiter, and 

 the medio-dorsal|dark mark^of abdomen continuous. 



Described from 25 specimens of both sexes, reared from locust-egg-feeding larvae. 



Specimens bred from cabbage and raddish roots, and others in my cabinet taken 

 from the burrows (made in Osage Orange in Missouri) of Crahro siirpicola Pack.; da 

 not difier specifically. 



The Common Flesh Fly {Sarcophaga carnaria^ L.) — The red-tailed 

 variety {sarvaceiiicE) of this ubiquitous insect, described and figured 

 in my 7th Report (p. 180) as preying on the locust, also attacks its 

 eggs. It is a larger maggot than the preceding, and contracts to a 

 darker pupa which is not similarly rounded at each end, but has the 

 hind end truncate, and the front end tapering. It sucks the eggs, as 

 does the Anthomyia larva, but the parent fly is probably attracted to 

 those, principally, which are addled or injured, as the pods in which I 

 have found it have very generally been in a fluid state of decay. 

 From three quarts of eggs I have obtained 26 of these flies. 



