JAMES A. G. REHX 
117 
This weakening is sometimes, but not invariably, associated with 
weakened paired pronotal lines. 
The length of thetegmina is relatively uniform — surpassing the 
apices of the caudal femora by about the dorsal length of the 
pronotal disk — in all but one Porto Velho male, which has them 
but faintly surpassing the femoral tips. Such variation is known 
to occur in the related genus 5 aerobes, and it is a case of parallelism 
we find in the present genus. 
The genus and species is known only from the upper Amazon- 
ian and Aladeiran drainages. 
LISTROSCELINAE 
Phlugis mantispa Bolivar 
1888. Phlugis mantispa Bolivar, j\Iem. Soc. Zool. France, i, p. 154. [Upper 
Amazonia.] 
Ceara-Mirim, Rio Grande do Norte. (\V. ]\I. Mann.) Five 
males, one female. 
Para, Para. (C. F. Baker.) One male. 
Paramaribo, Surinam. (K. Majm.) Six males. 
The female specimen is somewhat smaller than the measure- 
ments of the unique type, but we can detect no other differences 
from the description. The species has been recorded from Mexico ; 
Darien, Panama; La Guayra and Puerto Caballo, Venezuela; 
Cayenne; “Brazil”; Santarem and L^rucum and Carandasinho, 
Matto Grosso, Brazil; L^pper Amazonia; Porto Suarez, Bolivia; 
Asuncion, Paraguay and Formosa, Argentinian Chaco. 
Phlugis virens (Thunberg) 
1815. C[onocephalus] virens Thunberg, Mem. Acad. Imp. Sci. St. Petersb., 
V, p. 274. [No locality.] 
Ceara-lNIirim, Rio Grande do Norte. (W. i\I. Mann.) One 
female. 
Para, Pard. (C. F. Baker.) Two females. 
The previous Brazilian records of this widely distril^uted spe- 
cies are Rio de Janeiro, Para and Chapada, Matto Grosso. 
TR.\NS. AM. ENT. SOC., XLIII. 
