ONCOMETOPIA. 229 
5. Oncometopia dispar, sp. n. (Tab. XIV. figg. 13, 13 a,¢; 14, 2.) 
Oblonga ; capite pronotoque testaceo vel rufo-testaceo ; metopidio linea longitudinali nigra, ante apicem furcata ; 
corpore subtus et pedibus testaceis ; tegminibus apicibus hyalinis. 
Mas. Angustior, magis parallela ; tegminibus fuscis, maculis parvis testaceis sparsissime aspersis. 
Femina. Latior, minus parallela; tegminibus fuscis, maculis testaceis majoribus irregularibus dense aspersis. 
Oblong, with the head and pronotum testaceous or rufo-testaceous, and the metopidium furnished with a 
longitudinal dark line, which is forked before the apex; tegmina hyaline-at the apex; underside and 
legs testaceous, . 
Male. Narrower and more parallel, more darkly coloured, with the tegmina fuscous, sprinkled very sparingly 
with testaceous spots and with obscurely lighter patches towards the margins. 
Female. Broader, more robust, and less parallel, with the tegmina fuscous, thickly mottled with irregular 
testaceous spots, which cover a considerable portion of the ground-colour, and in parts more or less 
coalesce; apical segment of the abdomen not broadly but rather deeply emarginate, with a raised line 
before the central portion, and with the side-lobes rather long and rounded. 
Long., 5,15, lat.ad hum. 34 millim.; 9, long. 16-17, lat. 43 millim. 
Hab. GuateMa.a, Sabo in Vera Paz (Champion). 
The male of this species is scarcely distinguishable from the Tettigonia herpes of 
Signoret, which is synonymous with 0. obtusa (Fabr.); it has, however, the spots 
somewhat different. The female is one of the most distinct insects 1 have seen in 
the group. 
6. Oncometopia tartarea. (Tab. XIV. fig. 15.) 
Phera tartarea, Stal, Stett. ent. Zeit. xxv. p. 78 (1864) *. 
Hab. Mexico (Sallé, in Mus. Holm.'; Mus. Vind. Ces.), Omilteme 8000 feet and 
Xautipa in Guerrero (H. H. Smith). 
I am very doubtful as to this species: it can only be distinguished by the shape of 
_ the terminal ventral segment of the female, which Stal describes as ‘“ medio leviter 
trisinuatum ante sinus leviter subelevatum et ibidem utrinque dente parvo instructum.” 
The insects I have referred to O. tartarea appear to agree in this respect, but the shape 
of the last segment of the female appears to vary. In O. obtusa this segment is simply 
emarginate, with the central space raised, and furnished in the middle with a longi- 
tudinal raised line, and with two folds at the side caused by the raised portion; the 
side-lobes of the segment vary in length, the folds, however, at the sides appear 
sometimes to split, and in this case the segment presents quite a different appearance ; 
the longitudinal raised central line is sometimes depressed (this, however, often happens 
from other causes in dried specimens), and the central emarginate portion becomes 
sinuate in the centre and apparently more or less cut out at the side, this being very 
evident in three specimens in our collection from Cuesta de Misantla, Mexico, evidently 
belonging to the same species, one of which presents the normal form of the segment 
and the other two show the differences mentioned. It would seem, then, that the 
transition to the shape of the segment of the present species might easily take place, 
and if such is the case 0. fartarea must be regarded as synonymous with O. obtusa, as 
