465 



'3 oz. lead arsenate paste, and 4 gals, water, used in the field, gave 

 apparently no results. Adults which were observed to feed on the 

 spray Uved in captivity for two weeks or longer. Potassium arsenate 

 substituted for the lead compound was much more effective when 

 sprayed on to weeds and grass near a cabbage seed-bed. This spray 

 may therefore afford a certain degree of protection from the attacks of 

 this pest. Tarred paper disks covered with tanglefoot and placed 

 round cabbage plants captured large numbers of adults. These disks 

 were however liable to become coated with dust during windy weather 

 and thus lose some degree of efficiency. Injury to seed-beds can be 

 almost entirely prevented by screening with cheesecloth of 20 to 30 

 threads per inch ; this procedure also reduces injury by flea-beetles. 

 Cultural measures to lessen maggot injury include the removal of 

 stumps in autumn and the growth of seedlings as far as possible from 

 the final position of planting. 



Crawley (W. C). Ants from British Guiana. — Ann. Mag. Nat. Hist, 

 London, Ser. 8, xvii, no. 5, May 1916, pp. 366-378. [Reprint 

 received 17th September 1916.] 



The ants of economic importance recorded in this paper include : — 

 Edatomma quadridens, F., found in cane-fields, attacking the eggs and 

 larvae of Diatraea saccharalis and the larvae of Metamasius hemipterus ; 

 Neaponera villosa,¥., subsp. inversa, Sm., in holes in the trunks of cacao ; 

 Monomorium floricola, Jerd., in coconut ; Solenopsis geminata, F., 

 in hollow stems of plants and in houses ; S. corticalis, For., subsp. 

 amazonensis, For., infesting food- stuffs, especially sweet oils, sugar, 

 and milk ; Tetramorimn guineense, F., occurring in cane-fields, 

 attendant on Ripersia sp. (mealy bug of sugar-cane), and on Pseudo- 

 coccus citri, Risso, in cacao pods ; Cryptocerus pusillus, Klug, 

 attending Pidvinaria pyriformis, Ckll., and Coccus hesperidum, L. ; 

 Atta cephalotes, L., attacking the leaves of Hevea hraziliensis (Para 

 rubber) ; A. molleri, For., subsp. meinerti, For,, var, ghboculis, For., 

 attacking H. hraziliensis and foodstuffs ; Dolichoderus bidens, L., a 

 leaf-roUing species, especially of coffee ; and Azteca schimperi, Em., 

 forming nests on the tree-trunks, especially of mangos. 



Bruch (C). Un nuevo Ipido ( = Escolltido) de Chile {Phloeotribus 

 porteri, n. spec.) [A new Chilian Scolytid (Phloeotribus porteri, 

 sp. n.] — Anales Zool. Aplicada, Santiago de Chile, i, no. 1, 

 30th April 1914, pp. 25-27, 5 figs. [Received 4th September 1916.] 



A figure and description are given of a new Scolytid, Phloeotribus 

 porteri, found on plum trees (Prunus domestica, L.) near Concepcion and 

 on peaches (Arnygdalus persica, L.) near Santiago. 



Brethes (J.). Description d'un nouveau Prionomitus du Chile. 

 [Description of a new ChiUan Prionomitus.] — Anales Zool. Apli- 

 cada, Santiago de Chile, i, no. 1, 30th April 1914, pp. 29-30, 1 fig. 

 [Received 4th September 1916.] 



A description is given of Prionomitus aulacaspidis, sp. n., an Encyrtid 

 bred from Aulacapis rosae, Bch., collected near Santiago. 



