174 MAINE AGRICULTURAL e:xPE;rimENT STATION. I912. 



Myzus persicae Sulzer. On Dec. 6, 191 1, a chrysanthemum 

 heavily infested with this species of aphid was brought into the 

 Station Insectary. Migrants from this colonized both young 

 apple trees and sweet corn, abundantly accepting both for the 

 winter months. This species has been so adtnirably figured by 

 Miss Palmer (Gillette and Taylor 1908) that the Maine collec- 

 tions need no further illustrations for identification. Probably 

 no aphid has a wider range of food plants than persicae and it 

 is often a very serious pest. 



Sipha glyceriae (Kaltenbach) Pass. The collection (29-08) 

 of this remarkable aphid on rushes, Juncus sp., in Maine has 

 been figured and discussed previously in Bulletin No. 182 of 

 this 'Station. 



Neoprociphilus attenuatus (Osborn and Sirrine). A col- 

 lection (58-05) from Sniilax herhacea made at Levant, Maine,. 

 Aug. 26, 1905, comprised winged and apterous viviparous 

 females, nymphs and apterous oviparous females. This mate- 

 rial was determined by Mr. Pergande as Pemphigus attenuatus 

 and accords with the general account given by Osborn and 

 Sirrine (1893). There are discrepancies in the measurements — 

 that for joint I of the antennae of the alate viviaprous form 

 should probably read .05 mm instead of .5 mm as printed in 

 Insect Life and quoted by Jackson (1908). 



A second collection (121-09) was made from Smilax near 

 Orono, Sept. 23, 1909. It is with some misgivings that I erect 

 a genus for this single species. Of the five genera of the Tribe 

 Pemphigina recognized by Tullgren (1909) attenuatus falls 

 nearest to Prociphilus Koch but the antennal secondary sensoria 

 would exclude it from that genus. I lack at present material 

 suitable for an adequate study of the wax-pores; and the stem- 

 mother from which Tullgren deduces certain generic characters,. 

 I have not collected. 



The fact that this is the only example of the Pemphigina 

 which has been recorded for the Liliaceae lends strength to a 

 generic separation of the insect and a more detailed study of 

 the species will doubtless show more accurately its afifinities and 

 distinctive characters. 



Neoprociphilus, new genus, Alate viviparous female with 

 the sensoria of III, IV and V broadly eliptical in shape. VI long 

 with very short spur. Wings extending far beyond the stigma 



