228 
[October 
% , the head and some legs lost, received from Mr. Uhler and labelled 
by him as “j^T. basalis Hagen, Pecos River, Texas.’’ The coloration 
of the wing-veins and especially the whitishness of the principal sector 
below, the much smaller extent and different shape of the basal wing- 
spots, the presence of brown in the basal spot of the front wing, and 
the shape of the laminiform medial tooth on % abdominal appendages, 
all prove that it cannot be basalts Hagen. But for the remarkable 
difference in % abdominal appendages, I should suppose it to be a geo¬ 
graphical race of pseudamericana^ although none of my 6 specimens 
of that species show any disposition towards irregularity in the ptero- 
stigma. In H. occisa and majuscula^ which belong respectively to the 
last but three and last sub-groups of the Table, (p. 210,) there is the 
same occasional absence of the pterostigma, and when absent it is re¬ 
presented, just as in our insect, by a single thickened cross-vein. It 
will shortly be seen that in rupamnensis n. sp. the pterostigma is occa¬ 
sionally rudimentary as in the two foreign species just referred to, and 
occasionally has an additional cross-vein, equally robust with its bound¬ 
ing veins, as in certain specimens of the African Pliaon iridipennis 
Burm. 
9 ? Unfortunately there is no full description extant of the 9 of 
americana. In the Monograpliie Say’s brief description is copied, and 
the words “ head with a yellow abbreviated line oti the anterior orbits’" 
are translated “ t§te avec une bande jaune anterieure interrompue,” 
(head with an interrupted anterior yellow-band,) whence the locality 
of the interrupted band becomes obscure. I have a mutilated 9 Hetm- 
rina sent me by Mr. Uhler, in which this short yellow line on the an¬ 
terior part of the orbit of each eye is very distinct, and is about a milli¬ 
metre long and placed just under the origin of the mandibles. This 
specimen agrees in most respects with Say’s description of 9 americana^ 
but is remarkable for the following peculiarities :—Is^. The wings are 
unusually narrow, the front wing being 30 millimetres long and only 
5 millimetres broad at the nodus, while in % americana (from Mr. 
Uhler) the front wing is 29 millimetres long and 5^ millimetres broad 
at the nodus, and in the 9 pseudamerica.yia vrhich has the narrowest 
wings the front wing is 29^ millimetres long and 51 millimetres wide 
at the nodus. 2nd. The wings are colored as in the normal 9 pseud- 
am.ericana. 3/y/. The pterostigma, which is white, is three times as 
long as wide, and three out of the four have a distinct cross-vein 
