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Notes on the pupa of Trochilium andrengeformis, Lasih^ 

 By T. A. Chapman, M.D., F.E.S. 



Pupa of Tr. andreniformis from an empty case ($). Of the 

 usual ^geriad structure. Belongs to the genus TrocJii- 

 lium. The genera known to me may be divided as 

 follows : — 



j^gcria (cra'bronifo')inis = 'bcinbcciformc), has spines along 

 front row of second abdominal segment, and five spines 

 on each side of crown on tenth abdominal segment, the 

 two dorsal ones (four altogether) very small. 



Sciapteron (tahaniforme = vcsp)iformc), has no spines on 

 second segment (abdominal), on each side five nearly equal 

 to crown on tenth. 



BemTjccia (liylaeiformis), first and second abdominal 

 segments very smooth, only one or two large spines on 

 ninth abdominal (all the other genera have more or less of 

 a row in both sexes, liylaeiformis only in ^), has six spines 

 on each side of crown on tenth. 



Trochiliuni has only four spines on each side in the 

 crown on tenth segment. The first abdominal has no 

 spines, the second varies in the different species (or 

 individuals ?). 



In asiliforme [ = cynipiforme) and chrysidiforme there 

 are present spines of both the anterior and posterior row. 



In scolia}forriie and formiccvforniG the spines are present 

 in the front row, the back row being represented by a line. 



The majority of the genus have faint spines on the 

 front row and no very definite indication of the posterior, 

 the surface being smooth and no line easily made out. 



In andreniformis we have the extreme of this section, 

 the front line has but faint elevations to mark some only 

 of the spines, though the bases of those that are absent 

 are rather more chitinized than the rest of the line, and 

 there is a line showing the position of the posterior row. 

 This is no doubt correlated with its being perhaps the 

 palest (least chitinized) of all the species. 



* Laspeyres wrote andrenseformis ; it is a pity that this does not 

 agree with Trochilium. I have not verified the names of other species 

 referred to. T. A. C. 



TRANS. ENT. SOC. LOND. 1906. — PART IV. (jAN. 1907) 



