1920.] 101 



4. Var. odersfeltia, n. 



This form has i\ broad black band extending from tlie base along the costa 

 as far as the usual yellow fascia, and in the middle of the wing immediately 

 below the black costal band is a black spot. In the extreme form the space 

 between the costal band and the inner margin is pale yellow, but in some 

 specimens the black of the costal band swells as a large black blotch at the base 

 to the inner margin. Outside the yellow area the markings are normal, as 

 they are also on the hind wings. The foi'm altogether, though very distinct, 

 has a somewhat washed-out appearance. 



I have eiglit specimens, l)red in diiferent years, seldom more than 

 one or two in any one year, from wild Huddersfiekl larvae, and do not 

 know it from any other locality. I have named it fi-om Odei'sfelt, the 

 ancient name for Hudderstield. 



5. Var. mixta, n. 



This form takes somewhat of the cliaracter of odersfeUia, but the broad 

 black costal band is broken up with two white spots. The yellow fascia is 

 broad from eosta to inner margin, and just above the inner nnirgin is also 

 extended throug'h to the base of the fore wings. All the markings are clear 

 and distinct without any of the washed-out appearance oi odersfeltia. 



I have six or seven specimens bred from wild Huddersiield larvae 

 in different years, and do not know it fi'om anywhere else, but believe 

 there was a specimen in the late Sj'dney Webb's collection, the locality 

 of which is unknown to me, 



6. Tar, vauata, n. 



In thi-* form the fore wings are more or less normal, but in the hind wings 

 the middle band of spots take the form of strong black streaks, a pair of the 

 streaks — in one ease two pairs — ta.king the form of a large and prominent V, 

 the apex of which points to the base of the wing. 



I have four specimens, all bred from wild Huddersfiekl larvae. 



7. Var. sparsata-varleyata, n. 



In this form the white portions of var. vurleyata are filled up with the 

 black spotting of var, uir/rosparsuta, in greater or lesser density. In my most 

 extreme specimen the spotting is .so dense as to almost obliterate the white, 

 and the black is also spread over the thorax and abdomen. 



I have bred nearly a score of this form from Huddersfiekl moths, 

 hut have never seen a wild specimen or bred one from a wild larva. 

 As, however, the iiiyrosparsala spotting appears now to be attacking all 

 our forms of (/rossulcti'iata, there is little doubt that if ever varleijata 

 becomes common in a wild state, it will turn up just as it does in our 

 hreediny'-caiies. 



