240 PROCEEDINGS OF THE ACADEMY OF [Jime, 



margins show a very weak convexity. Forceps nearly straight, 

 showing a weak and regular inward curvature in distal half; surface 

 well supplied with hairs; shaft triquetrous in proximal half, with 

 internal perpendicular face deplanate and ventro-internal margin 

 feebly cingulate, bearing at its distal extremity a very minute but 

 distinct tooth, for one-third the remaining distance the shaft is 

 cylindrical, thence to the aciculate apex flattened cylindrical, with 

 ventro-internal margin again feebly cingulate. Penultimate ventral 

 abdominal segment with distal margin weakly convex laterad, 

 feebly and broadly concave mesad. Caudal metatarsus equal to 

 combined length of second and third tarsal joints. 



Length of body, 3.67; of pronotum, .68; of tegmen, 1.29; of 

 exposed portion of wing, .7; of forceps, 1.36; Avidth of pronotum, 

 .75 mm. 



Head and abdomen shining blackish chestnut brown; median 

 portion of pronotum, tegmina and wings slightly paler. Lateral 

 portions of pronotum, shoulders of tegmina in an elongate maculation 

 and exposed portion of wings proximo-laterad in a rounded macula- 

 tion, warm buff. Forceps ochraceous-tawny. Limbs buffy; femora, 

 in all but distal portion, suffused with chestnut brown. 



The type is unique. 



Labia curvicauda (Motschuloky). 



1863. Forficelisa curvicauda Motschulsky, Bull. Soc. Nat. Moscou, XXXVI, 

 p. 2, PL II, fig. 1. [Nura-Ellia Mountains, Ceylon.] 



Trinidad, British West Indies, VI, 1905, (A. Busck), Icf," [U. S. N. M.]. 



Labia arcuata Scudder. PI. XVI, fig. 6. 



1876. Labia arcuata Scudder, Proc. Bost. Soc. Nat. Hist., XVIII, p. 257. 

 [Vassouras, 100 miles north of Rio de Janeiro, Brazil.] 



Cacao, Trece Aguas, Alta Vera Paz, Guatemala, III, 24 to IV, 20, 1906, 



(Barber and Schwarz), 4d^, 1 9 .^'^ [U. S. N. M.]. 

 Port Limon, Costa Rica, (F. Knab), 1 9, [U. S. N. M.]. 

 Carillo, Costa Rica, (Schild and Burgdorf), 19,^*' [U. S. N. M.]. 



Labia nodifer^^ new species. PI. XVI, fig. 5. 



1907. Labia arcuata Caudell, (in part not of Scudder, 1876), Proc. U. S. 

 Nat. Mus., XXXIII, p. 173. [Cacao, Trece Aguas, Alta Vera Paz, 

 Guatemala.] 



The present insect is very closely related to Labia arcuata Scudder, 



" Recorded in 1907 by Caudell as Labia trinitatis. 



1^ Correctly recorded in 1907 by Caudell, but the series of the following species 

 there included under this name. 



^* Recorded by Rehn in 1903 as Labia annulata, of which he considered arcuata 

 a synonym. 



1^ In allusion to the knobbed tooth of the male forceps. 



