852 EXPERIMENT STATION RECORD. [Vol.35 



Bibliography of Canadian zoology, 1914, E. M. Walker (Proc. and Trans. 

 Roy. Soc. Canada, 3. ser., 9 (1915), Sect. IV, pp. 307-318).— This annotated list 

 (E. S. R., 34, p. 651) covers the literature exclusive of entomology. 



Bibliography of Canadian entomology for the year 1914, C. J. S. Bethtjne 

 (Proc. and Trans. Roy. Soc. Canada, 3. ser., 9 (1915), Sect. IV, pp. 263-278). — 

 This continuation (E. S. R., 33, p. 553) lists 134 articles. 



Report of entomologist, J. R. Watson (Florida Sta. Rpt. 1915, pp. XLIX- 

 LXXVI, figs. 7). — A detailed report is first given of studies of the velvet beau 

 caterpillar (Anticarsia gemmatilis), a preliminary account of which has pre- 

 viously been noted (E. S. R., 34, p. 358). Technical descriptions are given of 

 its several stages, including six larval instars. 



The moths make their appearance at Gainesville about the middle of August. 

 The larvae, which become abundant by September 1, feed only on the various 

 species and varieties of the velvet bean (Stizolobium), the kudzu vine, and the 

 horse bean (Canavalia). The eggs, which are placed separately usually on the 

 underside of the leaves or on the tender shoots, hatch in about three days in 

 September. The young caterpillar feeding on the lower surface skeletonizes 

 the leaf by eating all the soft material but leaves the veins intact. After the 

 second instar it consumes the whole leaf except the larger veins and midrib. 

 From three to four weeks are required for the completion of its larval life. 

 The pupa is formed in an earthen cell usually barely beneath the surface of 

 the soil. Ten to eleven days are passed in this stage in September, some 21 

 days in November, and as high as 47 and 48 days for two individuals that 

 emerged in January. 



The species apparently does not winter over even in the central parts of 

 Florida but works northward each summer from south Florida. 



Several predacious enemies are mentioned but parasites appear to be of 

 little importance, a single chalcidid having been reared from a hundred pupae 

 and none from hundreds collected in the field. A disease due to Botrytis rileyi 

 nearly exterminated the caterpillars in fields at Gainesville in October, 1914. 

 While the disease appears almost yearly it too often gets started too late to 

 save the velvet beans. The lime-sulphur-lead arsenate spray, previously devel- 

 oped (E. S. R., 33, p. 58), controls the pest when applied in time. 



The Florida flower thrips [Euthrips] (Frankliniella tritici projectus) has 

 been studied by the author. Three years' observations and experiments with 

 deciduous fruit trees show that if sufficiently abundant it will cause the 

 deformation or even the destruction of leaves and fruit, the general character 

 of its injury being similar to that of the pear thrips. 



On citrus the addition of tobacco extract (2.7 per cent nicotin) to lime- 

 sulphur being used for citrus scab at the rate of 1 part to 100 of the lime- 

 sulphur resulted in the destruction of at least 90 per cent of thrips in the 

 blossoms. There appeared to be a considerable increase in the fruit on 

 sprayed over unsprayed trees and the sprayed fruit had a more healthy look. 



In further notes on the camphor thrips (Cryptothrips floridensis) it is 

 stated that the species has been received from Ceylon. Anthothrips floridensis 

 is said to have been common during March on the blossoms of some Mexican 

 avocados, most of which they ruined. It attacks the stamens and pistils similar 

 to the flower thrips. 



An outbreak of the cottony cushion scale at Key West was controlled by 

 the introduction of the vedalia. Notes are also given on several miscellaneous 

 insects, including the green shield scale (Pulvinaria psidii) which severely 

 infested the wild rubber tree (Ficus sp.) at Miami in July. 



Thirteenth annual report of the state entomologist of Montana, R. A, 

 CooLEY (Montana Sta. Bui. 109 (1916), pp. 149-161, fig. i).— The insect pests of 



