128 Journal New York Entomological Society. [^'°1- xxix. 



yellowish white eggs were found in such places, the number vary- 

 ing from one to five. The egg scars on the seed pod are usually 

 covered over with a yellowish white scab of dried juice and are 

 easily located by such exudations. 



Upon hatching the larvcC first feed on the inner surface of the 

 green seed pod wall and then eat their way through the spongy 

 tissue between the wall and the developing seeds, until the seeds 

 are reached. Here they complete their growth, destroying more or 

 less of the young white seeds. The number of larvae in a single pod 

 varies from one to twenty. When many are present the entire 

 interior of the seed pod is consumed, nothing being left except the 

 outer wall. By the first and second week of August many larvae be- 

 come full grown at which time they leave the seed pod through a 

 hole in the wall and drop to the ground. Many simply crawl out 

 if the pod is cracked open which is usually the case after much of 

 the interior has been destroyed. After reaching the soil they enter 

 it to a depth of about one inch and at the end of a week have trans- 

 formed to pupae. The pupal stage requires from ten days to two 

 weeks after which several days are required for the beetles to color 

 and harden. Emergence in large numbers takes place during the 

 first two weeks of September and the beetles feed on the milkweeds 

 before seeking hibernation quarters. In the northern part of the 

 state, at Rutherford, eggs and young larvae were found as late as 

 August 17. There appears to be only one generation each year and 

 we found Uncaticollis confined entirely to Asclepias syriaca. 



Egg. Length 0.89 mm. Width 0.39 mm. Whitish. Somewhat 

 capsule-shaped; both ends rounded, one end slightly wider than the 

 other ; sides almost parallel ; chorion apparently smooth. 



Full Grown Larva. Form subcylindrical, tapering slightly at 

 both ends, slightly curved, almost smooth, whitish, head brownish. 

 Length of mature larva about 12 mm. Width about 3 mm. 



Head small, subcircular, sparsely hairy, slightly depressed; col- 

 lum absent; occipital foramen subtriangular ; epicranial halves sepa- 

 rated dorsally by a faint median suture; front subtriangular, bearing 

 several slightly depressed spots; gula indistinct, membraneous; ven- 

 tral mouth parts somewhat fleshy; maxillary sclerite indistinct, not 

 cushioned; clypeus and labrum distinct, former transverse, latter 



