28 
Psyche 
[March- June 
about 6 to 7 times its basal width (in the key the frontal 
index has been expanded to 1:5 to include the questioned 
group discussed later). The scutellum, fore and much of 
the hind femora are blackish or cinereous, the mid-pair are 
variable. The abdomen is usually reddish laterally, espe- 
cially in worn specimens, but in a considerable series from 
Michigan, Ontario and New York, a melanistic variation 
occurs which resembles the Neotropical plangens Walk. ( ? 
modestus Wied.) except that the wings of the latter are dis- 
tinctly fumose especially along the veins, the dorsum of the 
thorax has a more metallic sheen due to irridescent hairs, 
and the hairs on the entire fore femora are deep black. 
Stone informs me specimens of this form in the National 
Museum are from Mich., Ohio, Me., Conn., N. Y., Pa., Del., 
D. C., Md., Va., and N. C. I have seen it also from Ont., 
Mass., Ga., Fla., Tenn., and La. ; a single but undoubted 
specimen bears an early label of Douglas Co., Kans., which 
may be a mislabel in the absence of any others in a large 
amount of recent material from that state. It appears to be 
most abundant along the Atlantic Coast. I also have seen 
a typical female in Bequaert’s collection from Cuba. Since 
T. bellardii Szil. from Cuba is described with “front three 
and a half times as broad as its lower breadth” and “brown 
antealar swelling and scutellum”, Bequaert (1940b) must 
be mistaken in this synonomy. The description of T. cu- 
banus Szil. is inadequate for judgment but the “furca with 
a sharp appendix” and comparison with trilineatus suggest 
a Neotropical relationship. In all the Nearctic specimens 
of the various forms I have seen a short spur on one wing 
of only one specimen. The “carneis” scutellum and pos- 
terior legs preclude the synonomy of T. carneus Bell. On 
the other hand, the front of the type of T . commixtus Walk, 
from Mexico in the British Museum is said by Oldroyd to 
agree exactly with Stone’s figures of lineola and, since the 
femora are blackish, the only difference in the description is 
the yellow rather than white middorsal stripe. The actual 
occurrence of the typical form in modern Mexico remains to 
be verified, however. 
T. lineola subsp. scutellaris Wlk. Possibly the most fa- 
miliar to North American students is this form with red- 
dish scutellum and femora, frontal index ( $ ) 1: 3Y^-4Y^ 
