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a specimen was taken flying ; the latest, Oct. 23, (1886), when a nymph 

 was taken on the ground in a field. The earliest occurence of the insect 

 on the Asclepias that I have recorded is June 22, (1886). Thus it ranges 

 on the plant here from June to September. A specimen was taken April 

 25, (1886), in a crack in a rotten stump ; no doubt the species hibernates 

 in sheltered places (probably in the imago), as this and other early occur- 

 rences would show. Some facts would tend to show that it may oc- 

 casionally winter in the nymph state as well as in the imago, as the late 

 occurrence of the larva? taken at North Cannon, Mich., Oct. 15, 1832, 

 also the nymph taken here, Oct. 23, (1886), and as will be shown further 

 on, the female taken Oct. 8, (1886), which contained 13 eggs. Some 

 further observations on the subject will be needed however before deciding. 



Inasmuch as this species is so confined to the Asclepias, it has long 

 been my opinion that in their early stages as well as in the imago they 

 suck the juices of this plant. This is a direct inference ; for if they fed on 

 other insects, why should they be so confined to this one plant, more 

 especially as I have never noticed any Euchetes, or other larvae to speak 

 of, on the Asclepias here? With this idea in view I observed the species 

 quite closely last season (1886) and was well rewarded. 



On August 14, while watching a nymph that I had just discovered 

 on a green seed-pod oft. A. tuberosa, I perceived it insert its rostrum slowly 

 and nearly its whole length, into the pod and suck the juice therefrom. 

 Most of the insects were at this time on the pods. The same day I ob- 

 served the perfect bugs, both sexes, do the same thing, even puncturing 

 yellowed pods as well as the green ones. The same was again observed 

 on August 21st and 26th, numbers of the imagines puncturing the seed- 

 pods. Some of the specimens examined were found to contain a con- 

 siderable amount of green fluid in the alimentray canal, which was no 

 doubt the juice they had been extracting from the pods. They are seldom 

 found on the leaves after the pods are well formed. The natural food of 

 L. turcicus is undoubtedly the juice of the stems and pods of the Asclepias, 

 though occasionally they suck the juices of insects as do many nearly allied 

 species. As they are so constant on the Asclepias, it is not likely that 

 they will seriously injure or even attack any cultivated plants. 



During the season I examined many of the specimens that came in 

 my way, to ascertain if possible something of the breeding-habits. The 

 following are the results : 



The only date of the species being in coitu that I have recorded is 

 August 13th. 



July 28th. — Of four specimens taken on leaves and flower's of A. 

 tuberosa, three were males, while the fourth was a female and contained 

 29 yellowish-tinted eggs. 



