Insects injurious to the Cotton Plant. 165 



of the body appears to be covered with short spine-like processes 

 or tubercules. 



The second insect mentioned by Mr. Simpson is evidently an 

 Aphis of a green colour, and about one-eighth of an inch in length. 

 The drawing is not sufficiently accurate to form any idea of the 

 species, and I shall therefore give it the pro tern, name of Aphis 

 Gossypii. This species is shown magnified, and real size ? at ee, 

 fig. 8; and has an ovate abdomen, furnished at the apex with two 

 shortish setae, and the head furnished with antennae about two- 

 thirds the length of the body. 



The third insect is shown magnified at d, fig. 8 and 9, and does 

 not exceed one-eighth of an inch in length. It has six legs, and 

 an incurved ructorial apparatus, with a pointed abdomen, consi- 

 derably projecting beyond the immature wing cases. The general 

 colour is pale grass-green, with the wing cases of the same colour, 

 but much darker. 



Mr. Simpson has figured one specimen, d, fig. 8, with setaceous 

 antennae about half the length of the body, while there is no ap- 

 pearance of these organs on the other specimen, d, fig. 9 ; but they 

 are so evidently the same insect, that there being no antennae in 

 the latter case is clearly an error in the drawing. This is an 

 immature state of some member of the large order Homoptera, 

 and probably will be found related to the Cercopidce, and not far 

 removed from the genus Typhlocyba of Germar. 



As the foregoing notices are strung together without any attempt 

 to classify the insects, it will be as well, in conclusion, shortly to 

 recapitulate what has been said ; and it results that there is evi- 

 dence of twelve insects having been found injurious to the cotton 

 plant, viz. — 



6 caterpillars of moths, 



3 larvae of beetles, 



1 immature state of an Homopterous insect, 



1 Cimex, 



1 Aphis, 



12 



which have been treated on in the following order : — 



1. The caterpillar of a moth, known by the name of Chenille 



in Guiana, and Army Worm in the United States. 



2. The caterpillar of a moth, known as the Cotton Moth of 



Guiana. 



