102 



Larva hexapoda, pallide hyalina: capite punctisque utrinque octo brunneis. 



This also differs from our species, bat the (lescrij)tion 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 i)urj)le 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 larva? also have larger si>ots than those tigvu'ed 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., Ghilo infuiica- 

 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 larvte 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-groAvn individuals ready for hibernation, or which had hiber- 

 nated (Fig. 4, c). In Prof. Comstock's article (Annual Eeport of the 

 Department of Agriculture for 1880) it is shown that all hibernating 

 larvae found in corn by his correspondent. Dr. Anderson, of Abbeville 

 County, S. C, were jDure white without a trace of brown spots. There- 

 fore the brown spots on the midsummer individuals in corn in South 

 Carolina and Yirginia afford no argument for the nonidentity of the 

 sugar-cane and corn borers. Moreover si^ecimens from sugar-cane from 

 Florida collected in October of the present year show the brown spots 

 and variation of the color of head and i)rotlioracic shield noticed in 

 corn specimens and are in fact indistinguishable from these. In addi- 

 tion to this, from my observations in Westmoreland County, Ya., 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 x)lace 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 aiul carefully examined by one more competent in 

 the study of the Crambidse.* The larvae 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- 

 vei'se 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 qvrestion that ohliteralelhifi Zeller and crambidoides Grote, are, as they have 

 been made by Prof. Fernald, merely synonyms. 



