60 | HEMIPTERA-HOMOPTERA. 
FLATOIDES. 
Flatoides, Guérin, Icon. Régne Anim., Ins. p. 362 (1829-1838). 
Elidiptera, Spinola, Ann. Soc. Ent. Fr. 1839, p. 304. 
Phalenomorpha, Amyot et Serville, Hist. des Ins. Hém. p. 525 (1843). 
Atracis, Stal, Hem. Afr. ii. p. 250 (1866). 
This genus includes a number of obscurely coloured species, which in several cases 
are very hard to distinguish one from another. ‘These insects are found, I believe, on 
boughs or trunks of trees among lichen, and they afford a very good example of pro- 
tective resemblance or mimicry, as in such a situation it would be very difficult to detect 
them; not only are they of a dull brown or greenish colour, but many of them have 
larger or smaller stain:like markings on the tegmina, and some are furnished with more: 
or less conspicuous callosities, all of which make the resemblance to their surroundings 
more accurate. 
Stal separates the genus into two—Atracis, with unispinose posterior tibiew, and 
Flatoides, in which the tibie are bispinose; as this, however, appears to be the only 
tangible difference, it would be best to regard the character as merely separating them 
for convenience’ sake into two divisions. 
I. Posterior tibiz with one Jarge spine on its outer edge, about, or a 
little behind, the middle. 
1. Flatoides humeralis. (Tab. VIII. figg. 1, 1a.) 
Flatoides humeralis, Walk. List of Homopt. Ins. ii. p. 403’. 
Elidiptera basistigma, Walk. List of Homopt. Ins., Suppl. p. 69. 
Phalenomorpha sordida, Stal, Stett. ent. Zeit. xxv. p. 54°. 
Hab. Muxico?* (Mus. Vind. Ces.); Guatemata, San Joaquin in Vera Paz, Pantaleon 
(Champion); Panama, Volcan de Chiriqui, Bugaba (Champion).—Amazons, Para}. 
This appears to be a somewhat variable species; it may be distinguished amongst its 
allies by the more or less truncate and emarginate head, the comparative closeness of the 
transverse veins at the apex of the tegmina, and the rather strongly waved costal margin. 
The single example from Bugaba may belong to another species, but at present I prefer 
to treat it as a variety of /. humeralis. Stal (Bidrag till Rio Janeiro-Traktens Hemipter- 
Fauna, ii. p. 70) assigns /. humeralis, Walker, to his genus Vutina; apparently, however, 
he was unacquainted with the species, as he subsequently appears tv have described it 
again as Pha/enomorpha sordida. The single specimen which I have received from 
the Vienna Museum under the name of F. humeralis has the above synonymy attached 
to it; this was presented by Signoret, and it was on a type from Signoret’s collection 
that Stal described P. sordida, so that the determination is evidently correct. We figure 
an exampie from Chiriqui. 
