756 EXPERIMENT STATION RECORD. 



parontly the same siiecie.s was collected in June and July fnjui the twigs and 

 terminal loaf curls of the Japan quince iCydonia japonica). In transfer tests 

 during 1!)12 .1. hrcvin was found to accept both alsilie and other clover (Tri- 

 foUuiii spp.). Migrants placed on alsike and white clover produced nymphs that 

 fed with apparent satisfaction on the test plants. Sweet pea iLathyruH odora- 

 tiis) vines were found to be infested by this species in August. 



A. baJcerl was talien from Trifolium pratense at Orono, Me., about the middle 

 of August. It is found upon shepherd' s-purse (Capsella hurm-pastnrifi) in the 

 fall and early spring, but whether there is a migration between shepherd's-purse 

 and clover has not been determined. Specimens from hawthorn in Oregon were 

 examined, and it is reported to occur on apple (Malun .spp.) in Colorado. The 

 author made a single collection of a fall migrant on hawthorn at Orono on Octo- 

 ber 1. 1014. 



Our common butterflies, F. E. I.utz (Aiiia: Mus. Xnt. HM. (Juide Lenflct AS 

 {IHt'f), pp. 25, jigs. JfO). — A popular account. 



Some notes on the life history and habits of Lauron vinosa, T. H. Jones 

 (Insccutor liiscitiw Menstruus, 2 (1914), No. 7, pp. lOS-llJ).— The larva of 

 this lepidopteran is said to cause the death of Heliotropium indicum, which 

 occurs as a weed in and about the sugar-cane fields at Rio Piedras, P. R. 



The Hessian fly, F. M. Webster {U. S. Dept. Afft:, Fanners' Bui. 640 {1915), 

 pp. 20. figs. 17). — This is a revision of Circular 70 of the Bureau of Entomology, 

 previously noted (E. S. R., 17, p. KW). 



Life history of the Mediterranean fi-uit fly from the standpoint of parasite 

 introduction, E. A. Back and C. E. Pemberton (t7. -S'. Dcpt. Agr., Jour. Agr. 

 Research, 3 {1915), No. 5, pp. 363-374, />'«• 2).— The authors first describe meth- 

 ods for rearing fruit flies which developed during the course of their work. 

 During warm weather nearly all puparia ai*e formed in from one to two hours. 

 The minimum length of the pupal stage is 6 days when the mean temperature 

 ranges from about 76 to 79° F., but even during the warmest weather in Hono- 

 lulu the larger proportion of any lot of pup;e required from 9 to 11 days before 

 yielding adults. The period may be increased to at least 19 days when the daily 

 mean drops to about 69 to 71°. The authors have found that the fly can pass 

 from egg to adult if kept in the dark in cold storage at 56 to 57°. and that at 

 this temperature practically all pupte yield adults from 37 to 41 days after 

 pupation. " Pupse placed in cold storage in the light at a temjierature varying 

 between 58 and 62° were apparently unaffected by the cold, except that the 

 length of the stage was increased to from 29 to 31 days for pupje which were 

 about three hours old when placed in cold storage. In carrying pupae from place 

 to place for rearing purposes a temperature of less than 56 to 60° is not advised, 

 as great mortality occurs. Thus, from about 300 pupse 1 day old placed in cold 

 storage at about 50° on June 2 and removed to a normal summer temperature at 

 Honolulu on July 22, only S adults emerged dui'ing the i>eriod from July 24 

 to 26." 



Well-fed ^Mediterranean fruit flies were kept alive in jars when fed on 

 sweetened fruit juices for more than 5 months, although 50 per cent usually dip 

 within two mouths after emergence. Oviix)sition was found to take place in 

 Hawaii as early as five days after emergence during very warm weather, but not 

 for about 10 days when the temperature ranged between 68 and 72°. Records 

 kept of females showed that during the first 18 weeks of the life of one female 

 more than 499 eggs were deposited, at the end of which time she was in a thrifty 

 condition. Two other females during the same period deix)sited 416 and 336 

 eggs, respectively, while a fourth female living but 80 days deposited 312 eggs. 

 The authors point out differences in habits between the adult Meiliterrauean fruit 

 fly and the adult melon fly {Bactrocera cucurhita), the latter being far more 



