Mr. R. Shelford’s Studies of the Blattide. 255 
8. P. americana, Sss. (ARGENTINE REPUBLIC.) 
Thyrsocera americana, de Saussure, Rev. Zool. (2), xxi, 
p. 111 (1869) ; Miss. Mex. Orth. p. 51 (1870). 
The type is in Paris. This is another rufous species, 
perhaps not distinct from P. annulicornis, Burm. 
9. P. mimica, Wik. (BRAZIL, Para.) 
Pseudomops mimica, Walker, |. c. p. 80, n. 17 (1868). 
?. Head black, antenne mutilated, pronotum rufous, with a 
fuscous crescentic band on the hind margin. Tegmina dark fuscous, 
mediastinal area and a small spot at the base of the marginal field 
hyaline-testaceous. Abdomen black, the fifth tergum with two 
lateral testaceous spots ; cerci mutilated ; supra-anal lamina pro- 
duced, quadrate. Legs dark castaneous, apices of coxw and 
trochanters testaceous. Length of body 8 mm. ; length of tegmina 
10 mm. 
Type in the British Museum. 
The dark tegmina and the rufous pronotum render this 
a sufficiently conspicuous insect. 
10. P. cincta, Burmeister. (MEXICO, GUATEMALA, 
NICARAGUA.) 
Thyrsocera cincta, Burmeister, l.c. p. 499, n. 3 (1838); 
Brunner, l.c. p. 122, n. 9 (1865); de Saussure, Mém. 
Mex. Blatt. p. 50, pl. 1, f. 28 (1870) ; de Saussure and 
Zehntner, |.c. p. 32, n. 1 (1898). 
Thyrsocera mexicana, de Saussure, |. c. p. 122 (1864). 
Thyrsocera sallei, de Saussure, Lc. p. 128 (1864). 
Pseudomops saller, var.,. Walker, l.c. p. 77, n. 4 (1868). 
Thyrsocera cincta, var., de Saussure, Miss, Mex. Orth. p. 51 
(1870). 
The species exhibits a great range of variation, the 
extreme forms are very different in coloration, but as 
de Saussure has examined a considerable series of speci- 
mens which help to bridge over the differences, I accept 
his conclusion that P. sa//ei is merely a rufous variety of 
crncta, 
