98 THE CANADIAN ENTOMOLOGIST. 



forms which he figures to be constant. In fact, they are not so. I have 

 drawn the right side pieces of four males of the Maryland race of 

 fulvicosta. They are shown in figures i to 4, viewed from within x 50, 

 the dorsal angles down. These are not specimens selected for their 

 variation, but are all that were m.ounted. The only selection applied 

 was in taking the poorest specimens for dissection. Fig. i shows the 

 upper angle produced and rounded, the lower angle much more pro- 

 duced \ fig. 2 shows the lower angle not produced, but simply rounded ; 

 fig. 3 both angles produced, the upper the most so ; fig. 4 both angles 

 produced, but the lobes of quite different shapes. There is as much 

 variation in these specimens of fulvicosta as in all of Prof Smith's 

 " species," and I am of the opinion that the genitalia are valueless as a 

 means of specific distinction in Haploa. However, I add drawings of 

 most of the other forms and also reproduce Prof Smith's figures. 



It is possible that the larvse, when fully known, will be of more help, 

 yet this is doubtful, as they seem to possess all the same habits and 

 hence are not markedly different in their colours. Very full descriptions 

 are needed, especially of the mature larva, to test these points. The 

 following observations were made on the larvae sent by Mr. Foulks and 

 on the young ones bred out of the eggs from the moths. 



Normal number of stages six ; hibernation in the fourth or fifth. 

 The young larvse that were selected for observation passed two inter- 

 polated stages between the normal II. and III. and died before reaching 

 stage IV. 



Egg. — Of the shape of two-thirds of a sphere, scarcely conoidal, 

 the base flat ; smooth, shining, rather dark yellow ; diameter .6 mm. 

 Reticulations obscure, visible in a strong reflected light, very narrow, 

 linear, irregularly hexagonal, the cell areas flat, uniform, no shadows. 



Stage I. — Head high, bilobed, the lobes blackish brown, clypeus 

 pale, mouth brown ; width .3 mm. Body pale yellowish, tubercles dusky 

 pearly ; hair short, stiff, white. Setse single, normal, no subprimaries ; 

 feet pale. The larvge grow considerably, becoming long and slender, the 

 tubercles surrounded narrowly by brown. 



Stage II. — Head black, shining, clypeus whitish, jaws brown ; 



width .45 mm. Body whitish, warts rather small and with the shields 

 deep shining black ; hairs not numerous, but forming true warts, short, 

 bristly, black. A wide space between tubercles i. suggests a dorsal band 

 Warts each narrowly edged with brown, most distinctly subdorsally, no 

 connected marks. Subventral hairs pale. 



