422 ENTOMOLOGICAI, NEWS [Nov., '15 



to emerge from the pupae, while the absence of food plants 

 results in their death without progeny. If the insects could 

 remain as pupae until April or even late March, they would, 

 in many cases, find suitable host plants before death. 



After the freeze of November 21 which killed their observed 

 host plants, attempts were made to raise the caterpillars on 

 some of the wild and cultivated legumes from the fields and 

 woods. Although the caterpillars ate sparingly of some of 

 these plants, alfalfa being one of the least disliked, they would 

 not grow, and undoubtedly all would have died had not some 

 velvet beans been raised in the greenhouse for them. 



Their ability to reach such far northern stations as Canada 

 is to be explained by their longevity. Some moths kept in a 

 cage 4x4x5 feet and fed on moistened sugar lived for five 

 weeks. 



A detailed description of the larvae, their work, and the 

 life history of the insect will be published in the next annual 

 report of this station. Only a brief summary can be given 

 here. In September the insect spends about three days in the 

 egg stage and twenty-one in the larval, passing through six 

 instars. The pupal stage averages between ten and eleven 

 days in September. As the weather became cooler with the 

 advance of the season, this time was gradually lengthened un- 

 til those that pupated in November averaged twenty-one days, 

 and two that pupated on November 20th and 21st issued on 

 January 7th, forty-eight and forty-seven days, respectively. 



The writer will be grateful for any additional records of 

 the occurrence of this moth or its caterpillar. 



Completion of the "Biologia Centrali-Americana." 



The [London] Times Literary Supplement, of September 16, 1915, 

 announces the appearance of the Introductory Volume of this work by 

 Dr. F. D. Godman, saying : "The Introductory Volume, by the surviv- 

 ing editor, marks the completion of this monumental work on the 

 natural history and archaeology of one of the most interesting areas 

 on the earth's surface. The manifold departments have required for 

 their investigation the labours of a whole army of the most eminent 

 specialists, producing gradually in the course of 36 years 52 volumes 

 of zoology, five of botany, and six of archaeology." We hope to pre- 

 sent a more extended notice of the Introduction at a later date. 



