igoj] NEEDHAM:— BUTTON-BUSH INSECTS 27 



1 7 . Archasia galeata ( Fabr. ) . 



18. Atymna inoniata (Say). 



These species were all found upon 



. _. , ^ the leaves and, presumably, feeding 



iQ. Atymna quera (Pitch). y , ^^ ■ , , ^v^ /^ tt • , 



^ „; ^ . ^ _ f there. Determmed by Mr. O. Heide- 



20. Fhlet'Sins irrorratns (bay). 



. ^ /^ I mann. 



21. Thamiiotettix catel/ana {p-^y). I 



DiPTERA. 2 2. Leucopsis nigricornis Egger. The larvae of this Uttle tly were 

 found June 27 th in the midst of colonies of Aphis cephalanthi, feeding voraciously 

 on the plant lice. Though legless they could adhere to the convex surface of a bare 

 stem or crawl about upon it. The living larvae are whitish, with a covering of 

 bluish powder similar to that of the aphids, and there are on the middle of the 

 back several darker M-marks, connected in the middle by an interrupted middorsal 

 line. Some larvae were observed pupating in the midst of the aphis colony, attach- 

 ing the puparium to the stem. The puparium is at first yellowish, but later it turns 

 reddish brown. From puparia collected here a number of imagos were bred, and 

 these and the following Diptera have been determined by Mr. D. W. Coquillett. 



23. Epi.phragma fascipennis Say. Larvae of this, species are very common 

 under the bark and in the sap wood of watersoaked button-bush stems that lie 

 upon the mud. They are able to burrow through rather solid wood. Larvae of 

 different sizes may be obtained almost any time. Transformation takes place 

 mostly between the middle of May and the middle of June. A full account of this 

 species with figures will appear in my forthcoming second report from the N. Y. 

 entomological field station. 



24. Olontoviyia veriebrata 'Si^y. Observed on the flowers; specimens now at 

 hand bear the dates June 2 and 27. The larvae and pupae are taken not uncom- 

 monly floating on the surface of the pond. 



r 



1 All found feeding from 

 the flowers, the first very 



I commonly, the last two 

 I rather rarely. 



L 



25. Eristalis transversus Wied. 2 5tli June. 



26. Erisialis bastanii Macq. 21st June. 



27. Helophihis laelns Loew 21st June. 



28. Tiopidia albistylum Macq. 21st June. 

 2g. Baccha fuscipcnnis Say 31st July. 

 30. Clirysogaster nitida Wied. 21st June. 

 CoKEopiERA. 31. Hippodamia J3-punctata (Linne). This coccinellid beetle 



was not uncommon on the button-bush clumps. Some larvae were observed for- 

 aging in the colonies of Aphis cephalanthi\ imagos were distributed promiscuously. 

 This and the following Coleoptera, have been determined by Mr. Samuel Henshaw. 

 32. Telephoriis carolnius Fabr. This lampyrid beetle lives as a larva among 

 the roots of the button-bush, and in tiie mat of moss that usually overspreads them ; 

 it transforms frequently under the bark of a dead stem, sometimes in the pith 

 cavity of a short and thick stub when low enough to be kept sufficiently moist, 



