312 
PANAMA DERMAPTEEA 
MicroTOstox alter (Burr) 
1912. Spongovostox alter Burr, Ann. k.-k. Naturhist. Hofmus. Wien, xx\u, p. 
336. [Maripi, Bolivia (type); Minas Geraes, [Brazil]; Bugaba, Panama.] 
Paraiso, Canal Zone, Panama, II, 9 and IV, 25, 1911, (Schwarz), 
1 d^, 1 9 . 
Alhajnelo, Pan., IV, 6, 1911, (Biisck), 1 cf. 
This beautiful but minute insect is the smallest of the species of 
the Spongiphorinae. 
Microvostox bilineatus (Scudder) (Plate XXVI, Fig. 5.) 
1869. Labia bilineata Scudder, Proc. Bost. Soc. Nat. Hist., xii, p. 345. [Be- 
tween Quito and Napo [Ecuador].] 
Paraiso, Canal Zone, Panama, II, 1 to III, 5, 1911, (Schwarz- 
Busck), 2 9 , .1 juv. 
Bohio, C. Z., Pan., II, 7, 1911, (Schwarz), 1 juv. 
Tabernilla, C. Z., Pan., (Busck), 1 9 . 
Ancon, C. Z., Pan., I, 12, 1911, (Busck), 1 cf . 
These specimens agree fully in all diagnostic features with the- 
female type of this species, now before us. The females from 
Paraiso have the pronotum unicolorous; the other adults agree- 
with the type in having the lateral portions of the metazona 
slightly paler. 
LABIINAE 
We find, with regret, that the removal of a number of species 
from the genus Labia to the genus Microvostox, a member of the 
Spongiphorinae, by no means clears up the difficulties encoun- 
tered, in the material before us, representing other species of the 
present subfamily. 
Were sufficient material at hand, careful revision of the Ameri- 
ican forms would clear away the present confusion. As no one 
is at present able to undertake this task, we have felt it our duty, 
after careful consideration of the literature, to diagnose and 
assign to their proper station only those species represented in 
the material before us. It is with much regret that we are obliged 
to state that, though Burr has correctly separated Prolabia from 
Labia, his efforts in the General Insectorum to assign many 
American species to one of these two genera, have resulted in a 
very unsatisfactory state of affairs. In the Annulata and Dor- 
salis Groups of the genus Labia, we take exception to other con- 
