4.4.0 Mr. T. H. Briggs on Zygena Trifoli. 
nearly so) with those of the following and preceding seg- 
ments ; the anterior spot terminates lower down the side 
than the other; in the three segments immediately fol- 
lowing the head, the dorsal line is so narrow and dusky 
as to be hardly perceptible ; below which row of black 
spots, a pale yellowish line on each side with a bright 
yellow spot in the fold formed by the hind margin of 
each segment, below which line a row of black spots on 
each side, two on each segment confluent, or nearly so 
in their lower extremities, when confluent, making to- 
gether a spot of a horse-shoe shape, in which the spiracles 
are placed, below which, and in the succeeding pale line, 
are two black dots on each segment; one on the anterior, 
one on the posterior fold, the anterior dot being placed 
rather lower than the other, the space between this line 
and the feet is nearly filled up with blackish and dusky 
markings, some segments being more suffused than 
others; pro-legs and underside pale, with a row of dusky 
dots down the middle of the belly. 
Described June, 1866, from a larva sent from Barnwell 
Wold, which died ; supposed to be the Trifolii found there, 
subsequently compared with two larve from Shotover 
Hill, which agreed with this description, except in the 
less confluency of the spots. 
This larva seems as variable as Pilipendule, but with a 
brighter and generally paler ground-colour. 
Obs. M. Boisduval’s “petit point noir,” Mr. Hellin’s 
« x -like black spots,” and Mr. Buckler’s “figures with 
the lateral spots united,” all agree more or less with the 
above description, and are in total opposition to the de- 
scription of the caterpillar of the late T’rifoli. 
