1917] Scolia Manilce A slim. In Hawaiian Islands 209 



to pupae. For a time we tried placing the cocoons in glass 

 tubes packed in moss, but this method of shipment was not so 

 successful. 



The length of the life cycle varied considerably. In Los 

 Banos the average was about 40 days, shortening by a week 

 or ten days under favorable conditions in the summer and 

 lengthening to two months or more in the dry winter months. 

 A similar variation takes place in Honolulu, some specimens 

 having been three months in the cocoon. Small differences 

 of temperature and moisture appear to effect them, especially 

 in the resting larval or early pupal stages. 



On one occasion a consignment of adult Scolias and Tiphias 

 was brought over in a cage with growing AUernanthera, but 

 this method could only be used successfully when the cage 

 was accompanied by some quaUfied person, as the insects 

 require proper attention as to moisture and food. 



Between December, 1915 and January, 1917, 6,578 eggs, 

 pupse and adult Scolias were shipped from Manila and 1191 

 living females and 973 living males arrived or hatched in 

 Honolulu. Of 1691 cocoons shipped in glass tubes or moss 

 101 females and 54 males hatched in Honolulu; of 3884 eggs 

 sent in mud cells, 1057 females and 908 males hatched out 

 in Honolulu. These figures do not include those that issued 

 during the voyage and died. 



On March 13, 1916, one hundred and fifty cocoons received 

 from Manila were buried in a field where Anomala larvae were 

 abundant. Subsequently those were dug up and it was found 

 that thirteen adults had issued. August 2, 1916, one female and 

 six males and on September 9 sixteen females and twenty-two 

 males were liberated in the same locality. On September 16, 

 the insects were found flying about in numbers that clearly 

 indicated that they had become well established and were 

 increasing rapidly. In January, 1917, they were so numerous 

 in this locality that it was possible to catch as many as 175 

 females in one morning, and as many as 1606 females were 

 caught during seventeen visits of a couple of hours each, and 

 no diminution was observed, as more were caught on the last 

 day than on the first. These were used to colonize other 

 localities. If males had also been taken, six or seven times 

 this number could have been caught. In other localities where 

 colonies were liberated the Scolia is now known to be established. 



