HEMIPTERA-HETEROPTERA. 373 
Alydus femoralis (p. 158). 
To the localities given, add :—Mexico, Atoyac in Vera Cruz, Amula, Chilpancingo, 
Dos Arroyos and Xautipa, all in Guerrero (H. H. Smith), Temax in North Yucatan 
(Gaumer); Panama, Bugaba, David, Volcan de Chiriqui 2500 to 4000 feet (Champion). 
This species appears to be better placed in the subgenus Burtinus, Stal, than in the 
subgenus Megalotomus, Fieb., where I previously located it (anted, p.158). The length 
of the posterior femora places it in Stal’s division, but the antenne are divergent, as in 
many specimens the fourth joint is shorter than the second and third together. 
3. Alydus pallescens. 
Alydus pallescens, Stal, Rio Jan. Hem. i. p. 24. 1°. 
Alydus (Megalotomus) pallescens, Stal, En, Hem. i. p. 214.5 °*; Berg, Hem. Argent. p. 89. 112°. 
Hab. Mexico, Temax in North Yucatan (Gaumer); Panama, Bugaba (Champion).— 
AntittEs (coll. Dist.), Cuba?; ConompBia?; Brazit, Rio Janeiro!? (coll. Dist.); 
ARGENTINE REPUBLIC °. 
This species exhibits a great constancy of form and colour in all parts of its extended 
habitat. 
4, Alydus notatipennis. 
Burtinus notatipennis, Stal, Ofv. Vet. Ak. Férh. 1859, p. 459. 1°. 
Alydus (Burtinus) notatipennis, Stal, En. Hem. i. p. 214. 6’. 
Hab. Mexico !?,—Cotomsia !, Bogota ?. 
In many respects the description of this species resembles that of my A. femoralis, 
but in a long series of specimens, the material on which I founded that species, I 
can discover no trace of the “corii macula longe pone medium pallidis” which Stal 
refers to in his diagnosis of A. notatipennis. 
TRACHELIUM (p. 159). 
Trachelium albo-apicatus (p. 159). 
To the locality given, add:—Mexico, Atoyac in Vera Cruz (H. H. Smith); Guatz- 
MALA, Tamahu (Champion); Panama, Volcan de Chiriqui 2500 to 4000 feet (Champion). 
9. Trachelium tessellatus, n. sp. (Tab. XX XIII. fig. 23.) 
Castaneous or blackish. Antenne unicolorous, fourth joint longest, third a little shorter than second. 
Corium with some central pale greyish tessellate markings, the apical margin levigate greyish-white, with 
the apex black. Underside of body concolorous, the head, sternum, and apical half of abdomen darkest 
or shining black ; basal margin of head, coxal spots, and a discal transverse fascia to the abdomen pale 
