214 THE CANADIAN ENTOMOLOGIST. 



Described from one $ specimen from Queen Charlotte Islands, sent 

 by the Rev. J. H. Keen to Mr, Fletcher. A very interesting wingless 

 species, with rufous head and abdomen, and testaceous thorax and legs. 

 The compressed abdomen is more like that of an ophionid than of a 

 cryptid. 



Pezomachus Keenii, n. sp. 



Female — ^Length, 3-4 mm. Fulvo-ferruginous, Head slightly darker 

 than rest of body ; antennae 19-20 jointed, more or less obscured toward 

 apex ; cheeks polished. Thoracic nodes subequal, not very prominent, 

 faintly sulcate ; legs concolorous with thorax. Abdomen ovate beyond 

 the first segment, which is rather suddenly expanded posteriorly ; terminal 

 segments slightly yellow in one specimen ; ovipositor very short, sheaths 

 black. 



Described from four ^ specimens from Queen Charlotte Islands, col- 

 lected by the Rev. J. H Keen, after whom I have much pleasure in 

 naming the species, as a recognition of his efforts to advance our know- 

 ledge of the insect f.iuna of this distant portion of the Dominion. 



SUBDIVISION OF THE PIERIN.'E BASED ON PUP^. 



BY J. W. TUTT, F. E. S., LONDON, ENGLAND. 



An oversight (ante, p. 167, line 27) leads me to state that it is in the 

 Aporid section of the Pierince that the pupa has the abdominal segments 

 5 and 6 moveable, whilst in the Pierids proper only 5 is moveable. The 

 Fieridi have until now always included the Aporid section ; as a matter 

 of fact, many European systematists have placed our Aporia crataegi in 

 the genus Pieris. 



There can be no doubt that Aporia represents a very ancestral form 

 of the Pierince, and, as such, is structurally different in all its stages from 

 its Pierid allies ; at the same time I am firmly convinced that the Aporidi 

 is as distinct from the Fieridi as is the AntJiocharidi. 



I am looking; forward, with seme degree of interest, to the records of 

 observers which will tell us the American species of Pierince that have 

 the pupce with two (5 and 6) moveable abdominal segments (Aporidi) ; 

 which species have but one (5) moveable segment (Fieridi), and which 

 are solid {Aut/ioc/iaridi), and how far the structure of the pupa agrees 

 with the neuration of these types. 



