232 PROCEEDINGS OF THE ACADEMY OF [June, 



this, under the microscope, found to be due to a thin but solid coating 

 of some foreign matter. 



LABIDURID^. 



PSALIN.E. 



Tsalis festiva Burr. 



1910. Psalis festiva Burr, Trans. Ent. Soc. London, 1910, p. 182. [Bahia, 



Brazil.] 

 Cariaquito, Venezuela, I, 1911, (S. Brown), 2 9, [A. N. S. P.]. 



We are by no means convinced that this insect is merely a small, 

 non-melanistic, wingless form of P. gagathina, as indicated by Burr.^ 

 The truncate tegmina alone are visible in these specimens. Length 

 ■of body 15.8 and 17.5, of forceps 3.4 and 4 mm. 



The head is mahogany red, the pronotum burnt sienna. The 

 tegmina are mars yellow, except narrowly on the caudal margin 

 and more broadly on the cephalic margin, where they are blackish 

 brown, like the abdomen and forceps. The limbs are clear mars 

 yellow. 



Spandez percheron (Guerin and Percheron). 



1838. Forficula percheron Guerin and Percheron, Gen. Ins., Orth., PL VII. 

 [French Guiana.] 



San Carlos, Costa Rica, Icf, type of Psalis pulchra Rehn, [U. S. N. M.]. 

 Trinidad, (H. D. Chipman), 2 9, types of Labia pictipennis Bruner, [Bruner 



Cln.]. 

 Caparo, Trinidad, VI and VIII, 1913, (S. M. Klages), Icf , 1 9 , [A. N. S. P. 



and Hebard Cln.]. 

 Kaiteur, British Guiana, VIII, 11, 1911, (Crampton), 1 9 , [A. M. N. H.]. 

 Rio Caiary-Uaupes, Amazonas, Brazil, XI, 1906, (H. Schmidt), Icf, 



[A. M. N. H.]. 



The original figure of this distinctive species is excellent, and we 

 'do not understand why Burr, after placing pulchra (with a query) 

 and pictipennis in the synonymy under percheron in the Genera 

 Insectorum, has more recently mentioned and also designated 

 pulchra as genotype of Spandex? 



These specimens show little variation except in pronotal coloration. 

 The pronotum varies from solid Sanford's brown, to almost solid 

 blackish bay, two examples showing an intermediate and maculate 

 -condition. 



The Brazilian specimen differs from all others before us in having 

 the femora heavily and very broadly annulate with blackish brown. 



The male penultimate ventral abdominal segment is remarkable 



1 Ann. k.-k. Naturhist. Hofmus. Wien, XXVI, p. 334, (1912). Burr also included 

 ■there pulchra of Rehn, actually an absolute synonym of Spandex percheron 

 i(Guerin and Percheron). 



-Jour. Royal Microsc. Soc, 1915, p. 537, (1915). 



