37 
satisfied in this country. It now only remains for me to present the 
said scheme. 
I. Grey forms (with or without some ochreous admixture, but never 
with such at all strongly developed). Obscurata, Schiff., Tr. (pro 
parte), Dup. (pi. 185, fig. 7), Gn., Barr., etc.; obscuraria, Tutt (pi. xi., 
fig. 11); anthracinaria, Esp. ; ? quadripustulata, Don.; argillacearia, 
Tutt [nee Stgr.). 
II. Black or blackish forms.— Obscuraria, Hb. (fig. 146), Hw. (pro 
parte!), Wood (fig. 629); obscurata, Staint., Mosley ( Gnophos, pi. 1, 
fig. 2), Barr. (pi. 305, fig. 16); calceata, Robs, and Gard. (nec Stgr.). 
III. White or whitish forms.— Pullaria, Hw., Stph., Wood (fig. 
628) ; pullata, Staint.; serotinaria, Hw. (?), Stph., Wood (fig. 629), 
Robs, and Gard.; obscuraria var., Mill. (Ami. Soc. Ent. Fr., 1853, 
pi. xiii., fig. 1) ; obscurata var., Mosley (fig. 5), Barr. (pi. 305, fig. If, 
If, ? lc, ? 1 j) ; calceata, Stgr. Cat., Tutt, Mosley (fig. 1). 
IV. Brown or sandy forms.— Pullata, Dup. (pi. 185, fig. 6); dilu- 
cidaria, Stph. (?), Wood (fig. 627), Robs, and Gard. ; argillacearia, 
Stgr. ; obscurata var., Mosley (fig. 3), Barr. (pi. 305, fig. lg). 
Guenee* makes five forms, through his having separated pullata, 
Dup., from dilucidaria, Stph., Wd., with which he admits it agrees in 
colour. . His var. D is my form II, his var. A my III, his vars. B 
and C my IV. 
Of course, there have been figures, etc., difficult to locate, either 
because poorly executed or because more or less intermediate; for 
instance, the pullata of Stephens and Wood was the darkest chalk 
form, and might with equal propriety be classed under group I, but 
for the desirability of keeping all the chalk forms together. The 
following list of fairly recognisable varieties and sub-varieties will 
supply the further detail. 
la. Obscurata, Schiff. = lividata, Fb.—Medium grey, with the black 
lines well expressed (“griseis, nigro undatis,” Fb., Mont., ii., p. 199) 
= notata, Walk. (“ obscure cinereis,” etc., type specimen extant in 
Nat. Hist. Mus. Coll.). This is quite a frequent form both in this 
country and abroad ; it is not, however, well represented in my collec¬ 
tion, though my palest New Forest examples belong here. 
16. Var. et ab. (Anthracinaria Esp. = argillacearia, Tutt (nec 
Stgr.).—Medium grey, somewhat blended with brown. This is the 
common S. Devon form, and I have it also from N. Devon, it seems to 
be generallg rather less sharply black marked than form No. Ia, but 
of course there is no absolute law about this. 
l c. Var. et ab. Uniformata, mihi (n. var.).—Shining grey with 
little or no black freckling and the lines very weakly expressed. This 
form occurs with the preceding in the Lynton district, and appears, 
from what Barrett says, and from some specimens in the national 
collection, to form a regular local race on some parts of the Welsh 
coast. 
l d. Ab. (?) Quadripustulata, Don.—Grey, tinged with purple, lines 
well expressed. Donovan’s figure is very had, though I cannot quite 
endorse Guenee’s statement that it would represent Cyclopliora orbicu- 
laria just as well as Sciadion obscurata. It shows an evidently 
exaggerated violet coloration, but, as the text also indicates that it 
Ur. ct Phal., i., pp. 302-304 (1857). 
