304 
PANAMA DERMAPTERA 
Trinidad River, Pan., V, 1 to VI, 1911, 1912, (Busck), 1 cT, 3 9 . 
Cabima, Pan., V, 18 to 26, 1911, (Busck), 3 adults, 2 juv. 
Chilibre River, Pan., IV, 14, 1911, (Busck), 1 juv. 
Measurements {in millimeters) of extremes 
Ti i Length of Length of Width of Length of 
Porto Bello, xtinaina body pronotum pronotum tegmen 
cf (2) 16.5-32.8 2. 6-3. 4 2. 4-3. 3 5. 1-7. 6 
9 (6) 26.8-35.7 3. 2-4. 2 3. 1-3.7 7. 8-7. 9 
Length of 
forceps 
4. 7-6. 6 
5.9-7 
The adults, which have wings present, have the tegmina show- 
ing a broad mesal band of xanthine orange (greatest width 4.1 
mm.). This band is, however, not as wide as in a similar 
pair before us from San Carlos, Costa Rica, in the Academy 
Collection. 
The immature examples in the Hebard Collection are small 
(length 9.4 to 14.3 mm.) and very different from adults in general 
appearance. In the smallest, the twelfth or thirteenth antennal 
joint is very pale, in the larger specimens, slightly paler than the 
other joints, while the femora and sometimes the tibiae are suf- 
fused with blackish brown. As a result, confusion of these in- 
stars with EuboreUia annuUpes would be easy, were the heavier 
structure, proportionately larger head, longer distal antennal 
joints, lateral folds of proximal dorsal abdominal segments® and 
the second tarsal joints, which are distinctly shorter than in indi- 
viduals of EuboreUia of like size, not noted. 
EuboreUia antoni (Dohm) 
1864. F[ordnella] antoni Dohrn, Stett. Ent. Zeit., xxv, p. 289. [Venezuela.] 
Frijoles, Canal Zone, Panama, (Schwarz), 1 cf. 
Paraiso, C. Z., Pan., 1, 10, 1911, (Schwarz), 1 juv. 9 ; V, 3, 1911, 
(Schwarz), 1 cf, 1 9 . 
Corozal, C. Z., Pan., XI, 17, 1911, (Hebard), 1 9 . 
Females will be compared with that sex of E. annuUpes in a 
forthcoming paper. The males of antoni are separable from 
males of annuUpes by the decidedly larger size ; head with margins 
of cheeks almost straight, parallel, to the broadly rounded latero- 
caudal angles; more sharply acute and more strongly keeled 
latero-caudal angles of the distal dorsal abdominal segments, 
® Rehn has carefully described two of the later instars of the present species. 
Proc. Acad. Nat. Sci. Phila., 1903, pp. 301 to 303, (1903). 
