250 THE CANADIAN ENTOMOLOGIST. 



I). Body less than ivvice as long as broad persicje-niger. 



DI). Body ni'ire than twice as long as broad maidis. 



BB. Honey tubes reaching more than halfway to tip of abdomen. 

 E. Cauda more than twice as wide at base as at 



tip (conical) mori. 



EE. Cauda about as wide at base as at tip 



(filiform) oenoiheia'. 



AA. Anlenn;e three-fourths or more length of body. 



BBB. Honey tubes reaching beyond tip of abdomen. 



F. Cauda inconspicuous sorbi. 



FF. Cauda evident. 



G. Cauda about as wide at tip as at base 



(filiform) gossypii. 



GO. Cauda more than twice as wide at tip as at 



base (conical) ceanothi. 



BBBB. Honey tubes not reaching to tip of abdomen. 



H. Cauda inconspicuous brassicte. 



HH. Cauda evident cratiegi. 



Brassicce, Linn.; throughout the Slate on various cruciferns. 

 CalenduUcola, Monell ; marigold ; Berkeley. 

 Crai(7gi, Monell ; hawthorn {Cratcegus, sp.); Berkeley. 

 Gossypii, Glover ; shepherd's-purse, watermelon ; Newcastle, Wai- 

 sonville. 

 Ceanothi. n. sp. — Apterous viviparous female. 



Length of body, 1.46 mm.; width, 1.19 mm. Length of joints of 

 antennae : IIL, .31 mm.; IV., .16 mm.; V., .16 mm.; VL, .13 mm ; VII., 

 .27 mm. Body smooth, globular ; general colour clouded yellow-brown. 

 Nectaries reaching beyond end of body, black. Cauda conical, incon- 

 spicuous. Legs and antennae of a uniform yellow-brown colour. Eyes 

 black. 



Alate viviparous female. 

 Length of body, 1.54 mm.; width, .58 mm.; expanse of wings from 

 tip to tip, 5.58 mm. Length of joints of antenn?e : III., .38 mm.; IV., 

 .19 mm.; V., .19 mm.; VI., .15 mm.; VIL, .27 mm. Colour of head and 

 thorax jet black ; abdomen clouded yellow-brown. Wings opalescent, 

 veins dark green. Third discoidal vein obsolete at base. Cauda conical, 

 yellow-brown in colour. Nectaries reaching beyond tip of body, black. 

 Tibi?e yellow-brown except outer tnd, which is dusky. Other joints of 

 legs dusky, Antennal joints yellow-brown. Eyes black. 



