126 HEMIPTERA-HOMOPTERA. 
some cases reflexed. The cost appear to be very variable in number. Of two 
specimens before me taken by Bilimek in Mexico, which agree in size and shape, 
and appear to have been taken at the same time, one has nine coste and the other 
thirteen (one or two being abbreviated), and Signoret’s specimen of P. tredecim-costata 
has only eleven coste counting a rudimentary one. It is quite pessible that P. lineata 
as here defined may be hereafter split up into several distinct species; but it might 
perhaps be of advantage to define the following variety :-— 
Var. major. 
Major, cornu longiori, interdum reflexo, costis pronoti variantibus. 
Long. 11-14 millim. 
Hab. Mexico (Bilimeh). 
This variety might be described as a separate species were it not for intermediate 
forms. 
6. Polyglypta dispar, sp.n. (Tab. VIII. figg. 6, 6a, ¢; 7,74, 2.) 
Nigra, nitida, pronoto sat fortiter punctato, novem-costato, apice acuto ; pedibus rufis vel rufo-testaceis. 
Q. Latior, cornu pronoti plerumque rectiori, et costis plerumque totis testaceis, interdum, precipue ad medium, 
plus minusve nigris. 
3S. Angustior, cornu pronoti plerumque leviter recurvato, et costis plerumque totis nigris, ad latera partim 
testaceis. 
Female. Rather broad at the shoulders, with the pronotum produced into a moderately long and almost straight, 
sometimes slightly recurved, horn in front, with nine cost, which are either entirely of a light testaceous 
colour (so that the insect appears to be marked with fine, regular, light and dark lines) or are partially 
dark (so that the dorsal portion appears more or less clouded with black). 
Male. Smaller and narrower than female, with the pronotal horn, as a rule, slightly recurved, and with the 
black colour of the pronotum prevailing, but with the lateral coste partly testaceous. 
In both sexes the underside of the horn and the head are more or less testaceous, the markings being similarly 
coloured. 
@. Long. 11 millim. ; lat. max. 23 millim. 
3. Long. 10 millim. ; lat. max. 2 millim. 
Hab. Panama, Bugaba, Volcan de Chiriqui (Champion). 
The female of this species is very distinct, but the male superficially resembles 
varieties of allied species; it has, however, a facies of its own, and I feel almost certain 
that the insects are the male and female of one species, although it is quite possible 
that future workers may come to a different conclusion. 
7. Polyglypta agua, sp.n. (Tab. VIII. figg. 8, 8a.) 
Elongata, sat robusta, brunnea, unicolor, linea dorsali maculisque quibusdam dilutioribus, vel testaceo-adspersa ; 
pronoto antice in cornu brevissimum obtusum producto, ad humeris lato, inde ad apicem modice acutum 
regulariter angustato, novem-costato ; tegminibus hyalinis, margine costali brunneo, venis interioribus 
nigro-fuscis ; pedibus sat longis, totis testaceis, vel femoribus plus minusve nigricantibus. 
A rather stout species, which may be distinguished by its exceedingly short blunt horn and broad shoulders ; the 
colour is variable, apparently, lighter or darker brown with lighter markings ; the pronotum is deeply but 
comparatively finely punctured, with four costs on each side, and is gradually narrowed from the shoulders 
