1895,] The Classification of the Lepidoptera. 1071 
discover but one seta to represent ia and ib; the rest are pres- 
ent, but without any subprimary ones. On the abdomen the 
primitive arrangement prevails. I take the two lower setz to 
represent vii and viii (the latter corresponding to one on the 
inside of the leg in Hepialus, which could not be shown in the 
figure) and consequently subprimary viis absent. There is 
nothing here to contradict placing this genus with Hepialus 
in the suborder Jugatz, but I do not emphasize the point, on 
account of the extreme reduction of the sete. Larve kindly 
sent me by Dr. T. A. Chapman. 
Family Hriocephalide. 
Eriocephala calthella. Stage I (Fig. 4). Dr. Packard has 
kindly loaned me a slide of these larve prepared and given 
him by Dr. Chapman. Dr. Chapman has recorded many in- 
teresting observations on these larve (Trans. Ent. Soc. Lond., 
1894, 337-344), but only the arrangement of the setæ concerns 
us here. Dr. Chapman’s dorsal view (l. c. pl. vi, Fig. 1) corre- 
sponds with my own observations. His lateral views, how- 
ever, are on a smaller scale and the lowest row of setæ has 
been omitted. It was apparently not seen, as it is stated in 
the text that there are “8 rows of globular appendages” or 
setæ, that is four on each side, whereas, in reality there are 
are five rows, The two lower sete on the prothorax also es- 
caped observation. These corrections should be made to Dr. 
Chapman’s account. 
The setæ are highly modified and their arrangement has 
been much specialized as shown by the fact that the last two 
thoracic segments are like the abdomen. Thisis the case in 
no generalized type and has only been so perfectly attained in 
some of the highest lines of development in the Frenate. 
Nevertheless, by omitting seta iv on the thorax and iii on the 
abdomen, the arrangement could easily be derived from that 
of Micropteryx. I do not wish to suggest that this is the 
actual homology, for my material is too limited, but there 
seems nothing to preclude a derivation of Eriocephala from 
Micropteryx. 
