IOWA ACADEMY OF SCIENCES. 
43 
ing them with Central American and Mexican forms it 
seems nearly certain that obtusa Fab. was but a dark variety 
of undata , and as obtusa was described first the species 
would bear that name, while our forms would be the 
variety. Stal in Hemip, Fabriciana describes obtusa as 
with the head markings of undata; these markings are 
very constant and can be partially traced, except in the 
darkest forms, and appear to be one of the best distin- 
guishing characters outside of the genitalia. Signore t 
does not mention these markings nor figure them in obtusa , 
but he places clarior Walker from Fla as a synonym, and 
it had the head markings distinct, as described by Walker. 
He gives the claval veins as united in obtusa , but Seal gives 
them as like undata. Signoret does not describe genibalia 
under obtusa , but under his next species he describes it in 
showing how that species differs from ik Fowler follows 
Signoret in his treatment of the species, and under remarks 
on tartarea describes the genitalia of obtusa as like that of 
our undata. He follows Signoret in the synonomy of 
undata and adds marginata and its three synonyms; he, 
however, places undata on a very pale form, which he 
figures, and then describes alpha as a possible variety, 
while in fact it is nearer the typical form, His next 
species, rubescens , and a previous one, interjecta , seem also 
to belong to the obtusa group. He suggests tartarea and 
funebris as coming in there, but specimens in hand from 
Mexico which agree with the descriptions of these species 
are quite distinct. The funebris is given as from Calif, by 
Signoret, but no specimens of it have been seen from 
there, and it has not been included in the synopsis; possi- 
bly Lower Calif., Mexican, is meant. 
If, on further examination, the above conclusions prove 
to be correct, then the full synonmy of obtusa , as far as 
known, will be, in addition to the above, all of which will 
come under the variety undata , as follows: 
Cicada obtusa , Fab. Mantissa Ins. , p. 269, 1787. 
Froconia parallela, Walk. Homop. Ill, p. 788, 1851. 
Tettigonia facialis, Sign Monog. An. Sc. Ent Fr. , p. 489, 1854. 
Tettigonia herpes , Sign. Monog. An. Sc. Ent. Fr. , p. 796, 1855. 
Oncometopia obtusa , Fowl. Bio. Homop. II, p. 228, 1899. 
? Oncometopia interjecta, Fowl. Bio. Homop. II, p. 228, 1899, pi 14, fig. 12. 
? Oncometopia rubescens. Fowl. Bio. Homop. II, p 233, 1899, pi. 14, fig. 24. 
