specimens, reared from larva received in August, and produced by the 

 second brood of orange moths were all referable to the slate- colored 

 form. In fact all the moths which issued after September 23d were of 

 this form, though there was but a difference of five days between the 

 issuing of the last yellow and the first gray specimens, the latter con- 

 tinuing to issue through October. Many of the gray specimens, es- 

 pecially those which first appear, are so suffused with orange or reddish 

 scales as to appear somewhat intermediate between the two extremes, 

 but there are none which are not at once referable to the gray form. It 

 is in fact an interesting case of seasonal dimorphism, and how far it is 

 influenced by temperature, future experiment, which we hope to make, 

 will determine. 



Many species of the genus Teras are well known to \ary in a re- 

 markable degree, but none other known to me presents such a marked 

 case of seasonal dimorphism. 



DESCRIPTION OF A NEW SPECIES OF 

 SPHACELODES. 



BV W. J. HOLL.\ND. 



Among a number of specimens recently obtained from the Indian 

 River region of F"lorida are four moths, which I was for some time in- 

 clined to identify as Sphacelodcs Wdiirraria of Hiibner and (kienee. 

 A more thorough examination, however, leads me to the conclusion 

 that they are sufficiently distinct to deserve a specific name. I append 

 herewith a description: 



Sphacelodes Floridensis, n. sp. — $ . Expands 42 mm. Primaries 

 reddish brown, secondaries slightly darker. About the middle of the 

 costa of the primaries a large, triangular, flesh-colored spot, extend- 

 ing back to the first nervule. Three dark bands, the outermost form- 

 ing at the costa the exterior margin of the light flesh-colored spot, 

 divide the fore wings into three portions, of which the marginal por- 

 tion is the largest. The outermost band is cur\ed from the discal re- 

 gion towards the internal angle of the primaries. The basal and me- 

 dian bands are continued over the secondaries, the median band being 

 triply waved and shaded very slightly on its external edge by gray. 

 There is a very obscure, whitish discal spot on the upper surface of the 

 secondaries, and a very delicate gray marginal line disposed in scallops 

 intervenes between the main body of the hind wings and the concolor- 

 ous fringes. The under surface of the primaries and secondaries are 

 of a uniform, velvety, leaden-gray, with a broad marginal shade of a 

 darker hue. The abdomen and thorax are of the same general color 



