166 



been no general emergence, but one took place in 1915 on December 

 4tli, followed by one from the red volcanic cane-fields on December 12tli. 

 This species had remained an abnormal period in the ground before 

 pupating on this occasion, owing to the absence of rain, as no emergence 

 can take place until rain has moistened the soil. The length of life 

 is generally limited to one month, the female living longer than the 

 male. Cane leaves are occasionally eaten, but not to any great extent, 

 this being the only species of Lejyidiota that remains among the foliage 

 in the day-time. 



Details of the life-histories of L. frenchi, Blackb., L. rothei, Blackb. 

 L. caudata, Blackb., and of five undetermined species of this genus 

 are given, as well as of Ano'plognathus boisduvali, Boisd., Calloodes 

 punct'ulatus, OIL, Cacochroa decorticata, Macl., Anomala antiqua, 

 Gyll. {australasiae, Blackb.), Repsimns aeneiis, F., Isodon puncticollis, 

 Macl., Xylotrupes austmlicus, Thoms., Horonotus optatus, Sharp, 

 Dasygnathus mistralis dejeani, Macl, Semanopterus dejiressimculus, 

 Macl, Epholcis bilobiceps, Fairm., and of two undetermined species 

 of Haplonycha and one of Heteronyx. 



Many natural enemies of the various cane grubs are known, but 

 as none of them are plentiful, they do not effect any marked control. 

 The external larval parasites are the three Scoliids, Dielis formosa, 

 Guer., Discolia soror, Smith, and Campsomeris mdtila, F., which in 

 their turn are parasitised by a Mordellid and a BombyHid. The 

 internal larval parasites are eight unidentified species of Dexiid flies, 

 while the adults are parasitised by two Diptera. Predaceous enemies 

 comprise the larvae of four species of Asilid flies, and the larva of 

 one Elaterid beetle. 



A key to the four sub-families of the Scaeabaeidae, the Cetonides, 

 Melolonthides, Eutelides, and Dynastides, based on the larval characters, 

 is given ; also one to the Melolonthides, Rutelides, and Dynastides 

 based on those of the pupae. 



Malloch (J. E,.)- A Preliminary Classification of Diptera, exclusive of 

 Pupipara, based upon Larval and Pupal Characters, with Keys to 

 Imagines in Certain Families. Part I. — Bidl. Illinois State Lab. 

 Nat. Hist., TJrbana, xii, Article 3, March 1917, pp. 161-407, 30 

 plates. [Received 4th February 1918.] 



The character of this work is indicated by its title. In discussing 

 the economic importance of the Diptera, it is pointed out that while 

 many of the families are largely beneficial, the good done by them is 

 counterbalanced by the damage inflicted by other species. Famihes 

 that are essentially phytophagous are the Cecidomyiidae, Trype- 

 TiDAE, Agromyzidae and Chloropidae. A few species in these 

 families are predaceous and others are beneficial in keeping down 

 noxious plants. . True parasites, some of which are highly beneficial, 

 include members of the Tachinidae, Dexiidae, and Pipunculidae. 



Van Dyke (E. C). New Species of Buprestidae (Col.) from the Pacific 

 States — No. 2. — Entotn. News, Philadelpihia, Pa., xxix, no. 2, 

 February 1918, pp. 53-58. 



The species dealt with in this paper include Mehnophila californica, 

 sp. n., from yellow pine {Pinus ponderosa), Jeffrey pine (P. jeffreyi). 



