NO.17C0. THE EARWIGS OF THE U.S. * \TI<>\ \l. \IUSEI \l III /,'/,'. 459 



Guatemala. Secanguin, December, 1905 ((I. I*. Gold), larva. 

 Mexico. -Cordoba, one male (Knab). 

 Costa Rica. — Volcano de [razu, January, 1902. 

 Costa Rica San -lose, "on Indian corn," one female (Dr. Gust. 

 Michaud). Accession No. 20097, female. 



Subfamily AJNTc !ISTRO( rASTR] X . K. 



Genus ANCISTROG ASTER Stal. 



1. GULOSA Stal. 



Mexico. -Cordoba, June 12, male ami female (Knab). 



Mexico. Jalapa, January and February, male. 



Mexico. Orizaba, January l(i, 1897, male and female (I I. Osborn). 



2. SPINAX Dohrn. 



Guatemala. — Polochu River, one male, October, 1905 (C. P. Gold). 

 The abdominal spines rather feebly developed. 



3. MACULIFERA Dohrn. 



Mexico. Jalapa, January and February, male and female. 



4. FALCIFERA Rehn. 



=Ancistrogaster mixta Borelli, L906 3 , p. 12. 



Peru.— Piches and Perene valleys, 2,000 to .3,000 feet (Sociedad 

 geo^ralica de Lima), one male. (Cat. 

 No. SI 72.) 



Type of Helm (1905 1 , p. 510, fig. 7.) 



Mexico. — Cordoba, January 27, 

 190X, male and female (F. Knab). 



This is identical with A. mixta 

 Borelli. The slight lv differently 

 tinted antenna', the absence of the 

 small red humeral spot on the elytra 

 and basal spot on the wings, which 

 are present in .1. mixta are not suffi- 

 ciently stable characters to justify the discrimination of these two 

 species, and so the name .1. mixta must be sunk as a synonym (fig.3). 



5. Species? 



Mexico. — Jalapa, January and February, one female. 



G. Species? 



Peru. — Chanchamarja (Rosenberg), a fragment. 



Genus VLAX Burr. 

 1. TOLTECTJS Bormans. 



Mexico. -Orizaba, January '.) to 10 (11. Osborn), two males. [See 

 Rehn, 1901, p. 219, and I903 2 , p. 308.] 



Genus PRAOS Burr. 



1. PERDITUS Borelli. 



Costa Rica. Volcano I ra/.u, February 6, 1002, two males. 



Fig. 3.— Peni ltimate ventral segment 

 (if a male ancistrogastek falcifer*. 



