100 



This is the "Sugar-Cane Aphis," which is found in Java and 

 Hawaii, wherever cane is grown. The following enemies attack 

 it here: 



Diptera: Xantho gramma grandicornis and Leucopis sp. 



Coleoptera: Coccinella repanda and abdominalis; Scymnus 

 notescens and vividus. 



It is visited and milked by Pheidole megacephala. 



The following attack it in Java: 



Hymenoptera: Aphelinus mail cf. Zehntner PI. 2 f. 21 ; a sp. 

 of Encyrtinae, f. 22-24. 



Neuroptera: Chrysopa sp. and Osmylus sp. ■ 



Diptera: a Syrphid, PL 2 f. 17-20. 



Coleoptera: a CoccinelHd, PI. 1 f. 11-16. 



Zehntner has figured the Aphis, its metamorphoses and 

 enemies. 



N. B. An Aphis sacchari from the Antilles was mentioned by an anon- 

 ymous writer in 1833 in Loudoun's Magazine of Natural History, VI, 407-9 

 (with appendix by Westwood 409-13), fig. 54. and it might be thought 

 that Zehntner's name was invalid. The Grenadan insect, however, was 

 not described and was confused with the Xsimcid. Stenocranus saccharivord 

 (Westwood), the drawings actually being those of the latter. I think, 

 therefore, that Zehntner's name is not preoccupied and can stand. 



Macrosiphum Passerini. 



1860 Gh aphidi 27. 

 1. rosae (Linne). 

 Aphis rosae Linn. 1758 op. c. 452. 



This widely distributed form is found on cultivated roses 

 in these islands; it occurs in my own garden. It is attacked by: 

 Diptera: Xanthogramma grandicornis . 

 Coleoptera: Coccinella repanda and Orcus chalybeus. 



Myzus Passerini. 

 1860 Gli Aphidi 27. 

 1. citricidus n. sp. 

 Form and general appearance of M. cerasi Fabr. Black, shining, closely 

 reticulate on the tergites; 4th and 5th segments of the antennae largely 

 whitish; eyes blackish; rostrum whitish, last segment and a cloud on the 

 penultimate darker. Venation pale fuscous, the longitudinal vein and 

 the stigma whitish, sordidly. Coxae and the base of the fore femora whit- 

 ish, the tibiae whitish, except apically. Abdomen above and below often 

 widely dark brownish, medio longitudinally, (blackish- in certain lights). 



