MORGAN HEBARD 
315 
Measurements {in millimeiersy^ 
Length of 
body 
Length of 
pronotum 
Width of 
pronotum 
Length of 
tegmen 
Length of 
forceps 
Porto Bello, type 
4 
.65 
.68 
1.02 
1.09 
9 
Porto Bello, allotype 
4.3 
.78 
.85 
1.02 
.88 
Porto Bello, paratype 
4.5 
.68 
.75 
1 . 29‘« 
.95 
Cabima, paratype 
5 
.82 
.83 
1.16 
1.09 
Coloration. — Head shining blackish bro’^vTi. Antennae with proximal (eight 
or nine) joints pale mummy brown, distal (three or four) joints whitish. Pro- 
notum shining, with slightly more than cephalic half ochraceous-orange, 
varying in series to ochraceous-tawny, remaining caudal portion black, varying 
in series to blackish chestnut. Tegmina shining, black, varying in series to 
blackish chestnut. Abdomen with dorsal surface shining, blackish brown 
proximad shading to chestnut distad, in three specimens the chestnut extends 
over two-thirds of this surface. Forceps shining chestnut. Limbs immaculate 
ochraceous-buff.i® Ventral surface of abdomen shining, varjung from chestnut 
to russet. 
Specimens Examined: 5; 1 male and 4 females. 
Porto Bello, Panama, II, 20 to 25, 1911, (A. Busck), 1 cf, 3 9, type, allo- 
type, paratypes, (1 9 with fully developed wings). 
Cabima, Pan., V, 24, 1911, (Busck), 1 9, paratype. 
The Species at Hand of the Ciirvicauda, Annulata and Dorsalis 
Groups of the Genus Labia 
Key to males 
(Abdomen with numerous microscopic hairs and few'er longer hairs. Forceps 
strongly bowed; with hairs dorsad, particularly proximo-Iaterad.) 
A. Forceps greatly widened proximad. Abdomen with dorsal segments 
neither produced or keeled laterad. (Pj^gidium declivent, disto-ventral 
margin straight, transverse. Tegmina and wings fully developed, thickly 
supplied with microscopic hairs. Forceps with lamellate internal margin 
of enlarged portion acute-angulate produced just beyond pygidium.) 
Labia curvicauda (Motschulsky) 
AA. Forceps not greatly widened proximad. Abdomen with some dorsal 
segments either produced or keeled laterad. 
B. Abdomen with eighth and ninth dorsal segments produced and keeled 
laterad. Tegmina and wings (fully developed), thickly supplied wth 
microscopic hairs. 
It has been found necessary to take the measurements of all the very small 
earwigs under a microscope. 
Wings fully developed, length of exposed portion .75 mm. 
Wings, in female with these organs fully developed, blackish chestnut, 
each with a large spot of ochraceous buff . 
In some specimens darker, due to discoloration in drying. 
TRANS. AM. ENT. SOC., XLIII. 
