124 



Journal New York Entomological Society. ^^'°^- xxix. 



floral parts and the parts of the insects to which corpuscula are at- 

 tached. According to Robertson, in Asclepias incarnata, the small 

 anther wings are adapted to fasten the corpuscula upon the legs of 

 large insects from the claws to the middle of the tibiae and on the 

 claws and tarsal hairs of the smaller ones, but they catch the hairs 

 much more frequently. In Asclepias cornuti, the anthers are much 

 larger than in A. incarnata and as a consequence the corpuscula 

 are fastened to the claws of insects more frequently. The tarsal 

 hairs are not readily caught unless they are long. However cor- 

 puscula are found more frequently on the pulvilli and on the hairs 

 near the claws than on the claws. For references to other species of 

 Asclepias, the reader is referred to Robertson's paper. At the end of 

 the article Asclepias in general are treated and the following table 

 given. This shows the number of species visiting the flowers together 

 with the disposition of the corpuscula on them. In the table, the 

 pulvilli are included under hairs. 



Corpuscula on hairs, claws, tongue 

 Corpuscula on hairs and claws .... 



Corpuscula on hairs, tongue 



Corpuscula on hairs alone 



Corpuscula on claws alone 



Corpuscula on tongue alone 



Corpuscula, none 



16 

 16 



9 



54 



3 



3 



49 



ISO 



In the second paper in the Botanical Gazette, Robertson discusses 

 the distribution of the pollinia on various groups of insects which 

 visit the flowers. The third paper contains detailed lists of the flower 

 visitors and notes on the distribution of the corpuscula. 



Tetraopes tetraophthalmus Forst. (Coleop.). 



This insect, known as the milkweed beetle, is common throughout 

 New Jersey and elsewhere, feeding on the leaves, tender tips, stems, 

 buds and flowers of several species of Asclepias. In New Jersey, it 

 occurs during June, July, August and the first part of September. 

 In the middle section of the State, the beetles were first noted on 



