244 BOTANICAL GAZETTE. [ October, 
Insect relations of certain Asclepiads. II. 
CHARLES ROBERTSON. 
pollinia more readily than other flies. These are Physoce- 
phala, Conops and Midas. The legs of Midas clavatus 
Sometimes bristle with pollinia of A. verticillata and incarnata 
Corpuscula were found on the pulvilli, hairs and tongues ° 
flies, — ie their claws. re 
_ , Beetles which visit the flo s Tetraopess « 
Mmjurious, while those Visiting rae Mor ipeciah, Trichius 
oe and Chauliognathus, are quite as useful as ee 
Among Hemiptera, Podisus, which frequents the flowe! 
