16 



smooth beneath, thinly pilose ; last dorsal segment squarely docked 

 in the cf, the forceps strongly bowed and widely distant; at base 

 these are fl;ittened, directed outward and upward; then, a little before 

 the end of the basal third, they are turned inward and curve down- 

 ward and again upward, becoming flattened trigonate, and tapering 

 to a blunt point ; the inner edge is rather rudely but minutely den- 

 ticulate near the base, beyond more or less crenulate ; the forceps of 

 the 9 are simple cylindrico-trigonate, attingent, straight, slightly 

 incurved next the pointed tip, minutely denticulate along the inner 

 edge. Length of body, cT, 8-9.75 mm., ?, 7-8 mm.; of antenna?, 6 

 mm.; of tegmina, 1.5-2 nmi. ; of hind femora, 2.1-2.8 mm.; of for- 

 ceps, cf, 2.9-3.4 mm.; ?, 2-2.6 mm. Described from 9 cf, 8 ?, col- 

 lected by Sumichrast (No. 2) at Puebla, Mexico (terra frigida), in 

 January. Smithsonian Institution. 



This sj)ecies approaches more closely to the European Forf.hipunc- 

 tafa Fabr. than any known to me, but it still preserves the character- 

 istic features of the true Forficula? and not of the genus Anechura, 

 which I shall propose in' another paper for the European species 

 mentioned. 



56. Forflcula tolteca. Head dull castaneous, smooth, but 

 sparsely pilose, slightly tumid, with a transverse brnce-shaped sliglit 

 sulcation between the antenna^; palpi dirty luteous; antennae with 

 the basal joint dirty luteous, beyond light brown, the tenth pale, 

 excepting at the extremities (beyond broken). Pronotum rufo- 

 luteous, dull luteous at the sides, scarcely broader than long, well 

 rounded posteriorly, with a slightly impressed median line on the 

 anterior, and a slight carina on the posterior half, the whole flat, 

 sparsely jiilose. Tegmina dark brown, twice as long as the prono- 

 tum, squarely docked at the extremity, sparsely pilose; the exposed 

 part of the wings dull luteous, more or less infuscated on the bor- 

 ders, sparsely pilose, as long as the pronotum. Legs luteous, sparsely 

 pilose, the femora slightly and broadly fuscous toward the tip, the 

 tibia? still less so toward the base. Abdomen i-ather short and fvdl, 

 witli convex sides, dark castaneous, more or less blackisli toward the 

 sides, very delicately and transversel}' striate, more or less pilose, the 

 lateral tubercles rather prominent. Forcejss more than half as long 

 as the abdomen, depressed cylindrical, simple, straight, attingent, 

 incurved at the tip, and very sharply pointed, sparsely pilose through- 

 out, the inner edge very finely denticulate. Length of body, 8 mm.; 

 of tegmina and wings, 3 mm.; of hind femora, 2.75 mm.; of forceps, 

 2.4 mm. 2 ?. Mexico, Sumichrast. (Smithsonian Institution.) 



