34 



females at Amherst, Mass., which were just completing the process 

 of laying eggs on December 6. 



Dr. Howard has reared Perissopterus pukhellus and both Dr. Riley 

 and Dr. Howard have reared Aphelines mytilaspidis from this scale 

 insect. Chilocorus bivulnerus has been repeatedly recorded as feed- 

 ing on it and Dr. Riley has observed the Nitidulid beetle, Cybocepha- 

 lus nigritulus, Scymnus sp., Coccinella picta and Chrysopa sp. in the 

 same act. 



CHIONASPIS PINIFOLIAE HETEROPHYLLAE. 



Chionaspis pinifoliae heterophyllae Cooley, Can. Ent., Vol. XXIX.. p. 

 281 (1897). 



Chionaspis pinifoliae heterophyllae Berlese, Riv. diPat. Veg., Vol. VI., 

 p. 379 (1898). 



This variety is indistinguishable from typical C. pinifoliae except 

 by the lobes of the pygidium, a description of which is given below. 



FEMALE. Plate 7, Fig. 4. Median lobes rather small, sometimes 

 scarcely perceptible, rounded at the extremities ; divergent, forming a 

 distinct notch in the edge of the pygidium on the median line. Sec- 

 ond and third pairs decidedly reduced ; third pair sometimes wholly 

 wanting ; the two lobules of each lobe distinctly separated at their 

 bases. See PI. 7, Fig. 4. The lobes of this variety differ from 

 those of C. pinifoliae in being much smaller and less distinct. In 

 pinifoliae the median lobes are large and almost spatulate in 

 form while in C. pinifoliae heterophyllae they are small and narrow. 

 While the median lobes of this insect form a distinct notch, this is 

 quite different from the notch in the genus Phenacaspis. 



REMARKS. 



This variety was originally described from specimens on Cuban 

 pine, Pinus heterophylla, 'sent me by Prof. Quaintance from Florida. 

 The Department of Agriculture contains examples on Pinus sylves- 

 iris from Providence, R. I., and on Pinus mitts horn St. George, Fla. 

 On Cuban pine the insects usually occur at the base of the very 

 long slender leaves. I have also seen specimens on the bark of the 

 young succulent twigs. 



