June, 1919 Bulletin of the Brooklyn Entomological Society. 81 
Scutellum exposed. 
Discoidal area of elytra di- 
vided by a longitudinal vein. 
Ocelli usually present in ma- 
cropterous forms. 
Clavus distinct in macropter- 
ous forms. 
Membrane distinct, coriaceous 
only at base in macropterous 
Scutellum usually concealed. 
Discoidal area not divided. 
Ocelli absent. 
Clavus usually lacking or 
united with corium. 
Membrane entirely coriaceous 
and reticulated. 
forms. 
Characters which exist only in macropterous individuals are 
not satisfactory for definition of a family which contains numer- 
ous species often or usually brachypterous. Thus the last three 
characters listed in the foregoing table, though often used, are 
inadequate. Of the first three characters two are not entirely 
unequivocal, leaving really functional but one of the six char- 
acters usually advanced for recognition of the Piesmide. The 
division of the discoidal area by a longitudinal vein, the cubital, 
is seen in both long- and short-winged Piesmidz, but not at all 
in Tingide. This together with sole possession of the peculiar 
thoracic cavities described below render it expedient to continue 
recognition as a distinct family of this group so intermediate 
between Lygaeids and Tingids that it has in turn been united 
with each. 
- The family Piesmidz includes so far as known only the single 
genus Piesma, genotype Acanthia capitata Wolff. 
Synonymy of the genus is as follows: 
Piesma Saint-Fargeau et Serville. Encyclopédie Méthodique, 
Histoire Naturelle, Tom. X, Part. 2 (1825), 1828, p. 653. 
(Acanthia capitata Wolft and Tingis quadricornis Dufour.) 
Zosmenus Laporte, F. L. de. Essai d’une Classification Sys- 
tématique de Ordre des Hémiptéres (Hémiptéres Hétéropteres, 
Latr.) Magasin Zoologique (Guérin), 1832, p. 49 (Zosmenus 
maculatus n. sp.). Zosnanus on Pp. 47. 
Aspidotoma Curtis, John. Characters of some undescribed 
Genera and species indicated in the “Guide to an arrangement 
