from Maranham. 539 
mediate forms, for in a place where the two supposed 
parent species are not present, there could be no hybrid 
productions from them. I think the explanation I have 
before suggested is greatly supported by these additional 
facts. None of these intermediate varieties have been 
found in the humid forests of the alluvial plains where 
H, Thelxiope abounds ; nor in New Granada or Venezuela, 
where H. Melpomene is abundant; they are found only 
in districts which are intermediate in physical character, 
and their inconstancy shows that the physical conditions 
do not demand that one of them alone shall prevail over 
the others, as in the Amazons plain. 
The following are descriptions of nine new species in 
Mr. Belt’s collection. 
Heliconius novatus. 
Q. Expanse 3” 8”. Closely allied to H. Silvana, 
Cram. (Pap. 364 C. D.). Differs from all the varieties 
of that species in having three black spots at the end of 
the fore-wing cell, with a broad yellow belt lying beyond 
the cell. 
Fore-wing broadly truncated at the apex; black, 
basal half orange, except the costa; a black spot in 
the middle of the cell, a larger one within the end, 
and two smaller ones outside the median nervure at the 
end of the cell; beyond the cell is a broad yellow belt 
extending from the costa to near the outer margin, where 
itis crossed by a black lunulated streak ; the black apical part 
of the wing crossed by a belt of four widely separated 
spots, and having, near the outer margin, a row of five 
more or less indistinct smaller yellow spots. Beneath, 
the same, except that the pale spots near the outer mar- 
gin are larger and white. 
Hind wing above, orange; a subcostal stripe, broad 
outer border and discal macular stripe (sometimes unit- 
ing with the outer border) black ; two yellow spots near 
the apex. Beneath, the same, except that the subcostal 
black stripe is reduced to two large spots, and that the 
outer margin has a row of thirteen white spots, all in 
pairs, except the three nearest the apex. 
Body and antenne as in H, Silvana. 
This species is found also at Para. 
