No. 2. ] Notes 0^ insect pe^ts from the Entomological Section, 73 



"May 1 8th, the male scales were fully grown. At this stage they 

 were dark reddish-brown in colour, with the centre white, and the 

 posterior side, which is elongated, grey. At this date some of the 

 males had transformed to pupa;; others were still in the larva 

 state; these larvae were covered with roundish, more or less 

 confluent yellow spots, leaving only the margin colourless ; the end 

 of the body was pale orange. The newly-transformed pupae 

 resembled in markings the larvae just described. None of the 

 females had yet molted the second time ; their colour was deep 

 orange, 



" May 2 1 St, nearly all of the males had changed to pupae. It was 

 observed that the last larval skin is pushed backwards from under the 

 scale, to the edge of which it frequently adheres. 



" May 24th, none of the male pupae had transformed to the adult 

 state, ^ 



" May 29th, it was found that during the five days previous more 

 than one-half of the males had issued, and the remainder, though 

 still under the scales, were in the adult state. It was now forty- 

 seven days from the time the larvae hatched. 



"June 2nd, no males could be found ; the females were about 

 one-half grown, and were whitish with irregular yellow spots. 



"June 9th, eggs were observed within the body of a female. 



"June 17th, it was found that one of the females had deposited 

 nine eggs, of which six had hatched. This is sixty-six days from the 

 hatching of the egg, and probably about twenty days after impreg- 

 nation of the female. 



"The insect of this brood continued to oviposit until July ist. 



'■^Number of generations per year. — This insect, living on 

 orange trees in a room on the north side of a building in 

 Washington, passed through five generations in less than one year < 

 the average time occupied by a single generation was a little less 

 than seventy days. It is probable that in the open air in Orange 

 County, Florida, there are at least six generations each year. 



3. THE MANGO WEEVIL. 



Cryptorhynchus mangifera, Fabr. 

 On the 18th June 1895, Surgeon Major K. R. Kirtikar forwarded 



h 



