369 



Descriptions are given of 35 species, including four new ones viz. :— 

 Chi/sojKi japana, C. parabola, C. suzuJcii and C. hintoki. 



As regards those of economic value, Chrysotrojna japonica and 

 Chrysopa sachalinensis prey on Phorodon humuli ; C. japana and 

 C. sapporensis on Brevicoryne {Aphis) bmssicae ; C. matsimiurae and 

 C. honiensis on Pseudococcus {Dactylopius) citri, Icerya seychellanim and 

 I. jmrchasi ; G. cognata on Hyalojiferus anmdinis {pruni) and Prociphilus 

 humeliae. It was found experimentally that a larva of Chrysopa japana 

 ate on an average over 2,000 individuals of Brevicoryne hrassicae during 

 that stage and an adult over 4,000 individuals, and this is therefore 

 a highly beneficial species. 



Ojima (G.). Ichijiku Mimumushi [Fig-boring insect]. — Byochugai 

 Zasshi [Joimial of Plant Protection], Tokyo, vi, no, 6, 5th June 

 1919, pp. 427-430. 



The larva of a fig-infesting moth, Cirrhochrista brizoalis, Moore, 

 appears in May and June, and bores the stalk of the fig, whence it 

 penetrates into the fruit, which consequently becomes deformed and 

 ultimately falls. This attack by the larva is repeated in other sound 

 fruit at intervals of about five days. About the middle or end 

 of July, it becomes full-grown and leaves the fruit, pupating within 

 a silken cocoon in crevices of the bark. At the end of August or 

 in September the adult emerges and lays eggs that soon hatch. The 

 young larvae pass the winter in a silken web. Such larvae pupate 

 at the end of April and give rise to another generation of adults in 

 May and June. 



This moth also attacks the fruit of Ficus refusa. The best remedial 

 measure is the removal of early infested fruits, which are characterised 

 by the presence of brownish spots on the skin. 



Takenouchi (K.). Honposan Kichi Habachi-kwa Mokuroku. [List 

 of the known Tenthredinidae of Japan.] — Konchusekai [Insect 

 World], Gifu, xxiii, no. 61, 15th May 1919, pp. 182-188. 



In this list 142 species of Tenthredinidae hitherto described 

 from Japan are recorded. 



KiTAJiMA (Y.). Futatsunoshinkui Sinoxylon japonicum, Lesne. [The 

 Two-horned Boxer, Sinoxylon japonicum, Lesne. ] — SangyoShimp)on 

 [Journal of the Silk Industry], Tokyo, no. 316, 1st Julv 1919, pp. 

 631-633, 7 figs. 



The Bostrychid beetle, Sinoxylon japonicum, Lesne, has not hitherto 

 been recorded as injurious to the mulberry tree. In 1919, however, 

 it has done no small damage to mulberry plantations in Nagano. 

 The adult bores just beneath the bud in late spring and burrows 

 into the stem, usually making a tunnel about one inch in length. 

 This seems to be repeated several times by the same individual ; 

 the affected buds fall and die and often the stem itself tends to break. 

 The author was unable to ascertain where the early stages had been 

 passed, but this beetle is known to infest both persimmon (Diospyros) 

 and Quercus, and both of these trees occur in the same plantations. 



