1060 EXPERIMENT STATION RECORD. 



Pulvinaria acericola (W. & R.) and P. innumerabilis Rathv., L. O. 

 Howard (pp. 57, 58). — The author gives grounds for separating the Pul- 

 vinaria found on maples into the 2 species mentioned. 



An abnormal Coccinellid, A. F. Burgess (pp. 59, 60). — The paper con- 

 tains an account of melanism in Adalia bipunctata, a number of black 

 individuals occurring in connection with typical specimens. 



Notes on some Massachusetts Coccidw, R. A. Cooley (pp. 01-65.) — This 

 contains an account of observations on the maple-leaf louse (Pseudo- 

 coccus aceris), Aspidiotus forbesi, A. ancylus, A. fernaldi, and Diaspis 

 amy gd all. 



Notes on spruce-barh beetles, 0. M. Weed and W. F. FisTce (pp. 07-09).— 

 The beetles in question are said to belong to the species Dendroctonus 

 rufipennis. In describing the habits of the insect the authors say : " In 

 a space 15 in. long by 5 wide no less than eight burrows were discov- 

 ered. They were in all stages of development, from a mere hollowing 

 in the bark containing a single beetle, to a tunnel 2 or 3 in. long, and in 

 these cases also there was usually but one inhabitant, though it was not 

 rare even to find the male still accompanying his spouse." 



Notes on the life history of the woolly aphis of apple, W. B. Alwood 

 (pp. 70-72). — The author's object in his experiments was to determine 

 the part which the sexual form plays in the life history of the insect, 

 and to study the hibernation of the agamic form. 



"Such trouble was experienced, in rearing the sexual individual that we were not 

 able to make extensive observations on oviposition, nor were we able to carry eggs 

 over to the hatching period to produce a stem mother, but tbey were carried long 

 enough to conclude tbat the egg does not hatch in the autumn. . . . 



"From the long series of observations made, covering nearly 2 years, it is con- 

 cluded that the sexual form plays a very unimportant part in the propagation and 

 perpetuation of the species in this latitude. 



"Tbe agamic individuals are always present, usually in great numbers on the 

 roots and to a less extent on the stems of the apple trees, and these colonies persist, 

 so far as our observations go, and reproduce other agamic individuals in a direct 

 line without cessation and without apparent loss of virility." 



On the life history of Protoparce Carolina, W. B. Alwood (pp. 72-74). — 

 The record kept was for Blacksburg, Virginia. The first moths were 

 observed June 7. The egg laying began June 20 and continued until 

 the middle of July. Four moltings were observed, and the insect was 

 found to be partly double brooded. Apanteles congregate and a species 

 of Clnetolyga are recorded as parasites of the larva of Protoparce. 



Notes on the fertilization of muslmelons by insects, F. W. Banc (pp. 75, 

 70). — The author states that the perfect flowers of the muskmelon have 

 nearly as much pollen as the staminate ones and that the purpose of 

 the staminate flower seems doubtful. Fertilization by insects is said 

 to be the natural method, but the insects concerned are not named. 



Notes on tent caterpillars, CM. Weed (pp. 70-78). — Heavy spring rains 

 in conjunction with a bacterial disease are said to have destroyed 90 

 l^er cent of the larvae of the American tent caterpillar. 



