THE CANADIAN ENTOMOLOGIST. 249 



C. Colour very pale hyalinus. 



CC. Colour dark yellow coryli. 



BB. Body more than twice as long as broad. 



D. Four rows of setiferous tubercles on back of 



abdomen castanese. 



DD. Setiferous tubercles not in rows arundicolens. 



AA. Body without dorsal set^e. 



E. Seventh joint of antennae shorter than sixth caryse. 



EE, Seventh joint of antennae longer than sixth . . . betul9ecolei>s. 

 Caryce, Monell ; black walnut ; Berkeley. 

 Betulacoleiis, Fitch ; birch ; Berkeley. 

 Castanece, Fitch ; chestnut ; Berkeley. 

 Arnndicoiens, n. sp. — Apterous viviparous female. 



Length of body, 1.54 mm.; width 69 mm. Length of joints of 

 antennae : III., .77 mm.j IV., .50 mm.; V.. .54 mm.; VL,.27 mm.; VIL, 

 .27 mm. Body setiferous; general colour light lemon-yellow to darker 

 yellow. Nectaries reduced to tubercles. Cauda wart-like. Rostrum 

 reaching to second coxae. Antennal joints IIL, IV. and V. black at 

 outer ends. Tarsi dusky. Eyes red-brown. 



Alate viviparous female. 

 Length of body, 2.19 mm.; width, .81 mm. Expanse of wings from 

 tip to tip, 7. tg mm. Length of joints of antennae : III., 1.04 mm.; IV., 

 .58 mm.; V., .61 mm.; VI., .35 mm.; VIL, .35 mm. General colour of 

 body light lemon-yellow. Wings hyaline ; veins and stigma greenish. 

 Cauda short, tip black. Nectaries reduced to tubercles. Tarsi dusky. 

 Eyes red. Sixth antennal joint dusky; Vth and IVth black at outer end; 

 Ilird ringed with black one-third distance from joint II. and at outer end. 

 Small colonies, and also distributed singly on under sides of leaves 

 of bamboo {Arundo, sp.), Berkeley. 



Hyalinus, Monell ; oak ( Quercus inibricata) ; Berkeley. 

 Cotyli, Goetze ; hazelnut {Corylus, sp. ) ; Berkeley. 

 Urephanosiphum. — Acerifolii, Thos. ; live oak ; Berkeley. 

 Yl\M.0VT^KV?,.— Ar7ifidi?iis, Fabr. ; apricot; Berkeley. 

 Aphis. — 

 A. Antennae not more than half the length of body. 



B. Honey tubes reaching not quite half way to tip of abdomen. 



C. Honey tubes red-brown. . Alamedensis. 



CC Honey tubes yellow calendulicola. 



CCC. Honey tubes black. 



