102 
Larva hexapoda, pallide hyalina: capite punctisque utrinque octo brunneis. — 
This also differs from our species, but the description was drawn up 
from a figure only which may have been more or less inaccurate. 
The Queensland borer is described by H. Ling Roth as “a white cat- - 
erpillar with a purple speckled back, one and a quarter inches in length.” 
This is more like our species. 
The British Guiana borers received in 1879 by Miss Ormerod from 
Mr. D’Urban, of Exeter, resemble our own from the few brief words of 
description which she gives: 
* * and the larve also have larger spots than those figured and accompany- 
ing the excellent paper given by Professor Westwood. *~ ~*~ * 
Dr. Kruger describes four distinct lepidopterous borers from Java: 
Scirpophaga intacta Snell., Grapholitha schistaceana Snell., Chilo infusca- 
tellus Snell., and Diatraea striatalis Snell. Of these the latter, as else- 
where stated, is extremely similar to our species in corn. 
All of the larve which we had seen from sugar-cane up to the present 
year were entirely white, with yellow head and thoracic shield, but these 
were all full-grown individuals ready for hibernation, or which had hiber- 
nated (Fig. 4, ¢). In Prof. Comstock’s article (Annual Report of the 
Department of Agriculture for 1880) it is shown that all hibernating 
larve found in corn by his correspondent, Dr. Anderson, of Abbeville 
County, 8. C., were pure white without a trace of brown spots. There- 
fore the brown spots on the midsummer individuals in corn in South 
Carolina and Virginia afford no argument for the nonidentity of the 
sugar-cane and corn borers. Moreover specimens from sugar-cane from 
Florida collected in October of the present year show the brown spots 
and variation of the color of head and prothoracic shield noticed in 
corn specimens and are in fact indistinguishable from these. In addi- 
tion to this, from my observations in Westmoreland County, Va., the 
past August, it seems probable that the loss of the spots is character- 
istic of the perfectly full-grown larva, as at this late date the few 
delayed individuals of the first brood are all white. 
There may be, however, still some doubt as to the identity of the sugar- 
cane borer of Louisiana and the corn stalk-borer of more northern 
States, but it is thought worth while to place these facts concerning the 
corn stalk-borer on record at the present time and to await an absolute 
decision as to identity until a large series of moths from both food 
plants can be reared and carefully examined by one more competent in 
the study of the Crambide.* The larve collected by Schwarz in the 
*Prof. Riley, who has examined the moths, both from corn and sugar-cane, since 
the above was written, finds that they all belong to one species. Of over fifty 
specimens reared there is great variation both as to the distinctness of the trans- 
verse lines and of the terminal series of dots, and as to the general ground color. It 
is also noticeable that the later-bred specimens from the South are, on the whole, 
darker. The males are generally much darker than the females. The material 
leaves no question that obliteratellus Zeller and crambidoides Grote, are, as they have 
been made by Prof. Fernald, merely synonyms. 
