Cane Fly of Grenada. 413 



of rain." The insect under consideration differs from the 

 preceding kinds in the nature of its depredations, since, like 

 the A'phides, it feeds externally in all its stages ; and I have 

 no doubt that, like those insects, it is chiefly upon the young 

 and tender shoots that it makes its attacks. Now, it is well 

 known that, owing to this circumstance, and to the great 

 fecundity of the insects, no success has hitherto attended the 

 innumerable attempts which have been made to destroy the 

 A N phis of the hop plant ( A v phis humuli) : and, in like manner, 

 I can see but little ground for coming to any other conclusion 

 than that arrived at by Mr. Guilding, namely, that man will 

 not be permitted to frustrate the intentions of Providence, 

 but that we must look alone with submission to that Power 

 for the removal of these pests, ir K'Smncyi. \o sumn sdi lehau 

 I shall conclude these observations by describing the Gre- 

 nada insect under the name of na ^d-ii^I .a-ieeoM .sJrnilq edi 



De'lphax saccharivora Westiv. (Jig. 54. b, somewhat magnified.) 



Pallide virescens; capite subrostrato ; alis anticis (c) nervo secundo 

 apicali tantum bifido ; antennis supra linea nigra. 



Longitudo corporis lflin.; expansio alarum 4£ lin. Habitat in Insula 

 Grenada, Indiae occidentalis, Saccharum officinarum L. destruens. 



Allied to Delphax marginata and pellucida. Head, thorax, and ab- 

 domen pale yellowish green, the latter clothed at the extremity with a 

 white downy secretion ; head produced in front into a short narrow nasus, 

 ciypeus beneath 3-carinated ; eyes brown, with a notch beneath to receive 

 the base of the antennae (which are of a pale green colour with a dark line 

 in front, and which are not quite so long as the head) with the basal joint 

 half the length of the second ; the terminal joint is a slender seta (a) ; 

 rostrum extending to the base of the middle legs ; upper wings (c) ample, 

 .Boiil4fcJ bio ? )D98ni Att oabibcnoe^i|io b Son ai " yft 

 noilBqVbxs edi 

 lo |9tt 9IW1 



■ 

 vtenT 



-If} ; bn£l lo 8tofil) 9VI8n9JX9 

 much longer than the abdomen, nearly transparent, and almost colourless, 

 the : inner, margin slightly tinged with yellowish; nerves pale green, the 

 second apical nerve alone (and not the 2d and 4th, as in our allied British 

 species) forked ; under wings colourless; legs of a pale dull greenish yellow, 

 formed' for leaping, the anterior part not dilated. : * 

 bs-ipftoj&w AOQQ.OSlo b-mw9'i g teifojulbus 

 Ike u? 



-^OTJ89D 1 

 9dT .89^ 



Eaidain Si 8J398ni 9ffl ; aifiZ ni .oi boJ'io^.o'r ri9V9 saw 9irl 'io bie 

 "; hi fig. 54., b is a copy of the drawing sent by our Grenada correspond- 

 ent; a and c have been obligingly added by Mr. Westwood. In the first, 

 at the upper end, are exhibited the eggs of the insect ; in the last two, 

 the objects represented are considerably magnified. — -.>&£©Iq ji r 08TI ni 



