328 



REPORT OF STATE BOARD OF HORTICULTURE. 



nized, and the fourth stage of qvxite a new series was discovered! This is 

 regularly oval, the segments are fairly marked, the head is quite well de- 

 fined, and the eyes are distinct ; the honey tubes are equal to two body 

 segments in length, quite stout, and scarcely flared at the tip ; the antennaR 

 are six-jointed, and have no sensory pittings. 



August 6, the adult from this stage was iii*st positively identified, and it 

 differs in a most remarkable way from all previous forms. It is not over 

 five-hundredths of an inch in length, is rather regularly oval in form, and 

 resembles the second larval stage under the hand lens. Under the micro- 



P^iK- 27 — Wingless!, partheno- 

 genetic, viviparous female 

 of the fourth series; en- 

 larged. 



Fig. 28 — Fourth 

 stage of larva of 

 the fifth series; 

 enlarged. 



Fig. 29 — Wingless, 

 agamic, vivipar- 

 ous female of the 

 fifth series; en- 

 larged. 



scope the characters peculiar to the repi'oductive stage are at once obvious. 



The tarsi and tips of the tibias are dusky, the "tail" is prominent, the legs 



are long and slender, the honey tubes are drawn out 



into thin cylinders, equal to over three body segments 



in length, and the eyes are evidently pigmented. The 



antennae are six-jointed and without apparent sense pits. 



The most striking feature is that there are only two 



embryos visible in any of these examples ! I suspected 



at first that another species might have come in from 



the outside ; but after careful study of the whole series, 



I conclude that this is really the fifth series of parthen- 



ogenetic or agamic, wingless, viviparous females. 



Thej'^ continue to increase until, about the tenth of 



August, they are dominant, only a few of the fourth 



series remaining. No more than two embryos were 



Fig.30— Wingless, agam- seen in any specimen, and these were very large in 

 ic, viviparous female ^. ^ ^, . j. ^r. ^i. 



of the sixth series; en- proportion to the size of the mothers. 



larged. August 20, these forms had practically disappeared, 



and a sixth series of breeders had taken their place. These are, again, 



