125 



Stahel (G.). Over een Schorskevertje, Xyleborus perforans, Woll., in 



de Liberia-Koffie. [Xyleborus perforans, a Bark- Beetle infesting 



Liberian Coffee.] — Departement van den Landbouw in Suriname, 



Paramaribo, Mededeeling no. 8, 9th March 1917, 3 pp. [Received 



20th January 1919.] 



In February 1917 about 150 Liberian coffee bushes in a plantation 



in Dutch Guiana were attacked and in part killed by a beetle identified 



as Xyleborus perforans, Woll., which infests growing sugar-cane in 



the East and West Indies. The injury occurred in a plot of 3i-year-old 



plants where the Erythrina shade-trees had lately been pruned. The 



older leaves become yellow and fall, and ultimately the younger leaves 



also become affected. Examination of the bark reveals the bore-holes, 



which measure about 1 mm. in diameter and are found about 8 inches 



from the groimd in plants showing the first symptoms of infestation, 



while in later cases they may be found as high as 24-32 inches from 



the ground and also in the larger roots. To prevent the spread of 



this pest the infested plants were dug up and burnt and the adjacent 



healthy bushes were smeared with coal-tar at the base of the stem. 



Del Guercio (G.). Oxycarenus hyalinipennis, a Hemipteron Injurious 

 to Cotton, in Italian Somaliland. — AgricoUura Coloniale, Florence, 

 xii, no. 3, 1918, pp. 147-166, 23 figs. (Abstract in Mthly. Bull. 

 Agric. Intell. & PI. Dis., Rome, ix, no. 10, October 1918, p. 1262.) 

 [Received 14th January 1919.] 

 Oxycarenus hyalinipennis oviposits inside cotton bolls not far from 



the seeds, and also on the tracts surrounding the bolls as well as at 



their base, the larvae in the first case feeding on the seeds, and in the 



latter attacking the basal walls. 



The si^OTOzoa,, Pissidocystiaoxycarehidis, gen. et sp. n., and Valvicystia 



rhopaloides, gen. et sp. n., have been found in the viscera of nymphs 



and adults of 0. hyalinipennis. 



Bbethes (J.). Sobre algunos Himen6pteros utiles del Sud del Brasih 



[Some useful Hymenoptera of Southern Brazil.] — Anales Soc. 



Rural Argentina, Buenos Aires, lii, no. 1, January 1918, pp. 7-11, 



2 figs. [Received 17th January 1918.] 

 From a number of Hymenopterous parasites sent from Rio Grande, 

 Brazil, the following new species are described . — Lytopilus melano- 

 cephalus, parasitic upon an undetermined Lepidopteron injurious to 

 lucerne, perhaps Colias lesbia ; Aphidius brasiliensis, parasitic upon 

 Aphids ; Heptasmicra brasiliensis, parasitic upon Oeceticus{'i) ; Hetero- 

 scapus ronnai, gen. et sp. n., parasitic upon the larva of an undetermined 

 Lepidopteron, this genus being related to Baryscapus ; and TetrastichurS 

 isis, parasitic upon Oeceticus (?). 



Massini (P. C.) & Brethes (J.). El Gusano de los Naranjos. Su 

 Enemigo natural Pteromalus caridei, Brethes. Su Clasiflcaei6n y 

 Utilizaci6n biol6gica en Defensa de los Naranjales. [The Orange 

 Caterpillar ; its Natural Enemy, Pteromalus caridei, Brethes ; its 

 Classification and Biological Use in Defence of Orange Trees.] — 

 Anales Soc. Rural Argentina, Buenos Aires, lii, no. 2, February 

 1918, pp. 73-76, 2 plates. [Received 17th January 1919.] 

 Papilio thoas thoantiades, Burm., is a serious pest in plantations 



of Aurantiaceae. Throughout the summer the eggs of this butterfly 



