310 PROCEEDINGS OF THE ACADEMY OF [March, 



Genus NEOLOBOPHORA Scudder. 

 1875. Neolobophora Scudder, Proc. Boston Soc. Nat. Hist., XVII, p. 281. 

 Type: N. hogotensis Scudder. 

 Neolobophora ruficeps (Burmeister). 



1838. F[orficula] ruficeps Burmeister, Handb. der Entom., II, p. 7.5.5. [Mex- 

 ico.] 



Two specimens; male and female; Orizaba, Vera Cruz, Mexico. 

 January 9-16, 1892. (H. Osborn.) [U. S. N. M.] 



The forceps of the female are slenderer than those figured by 

 De Bormans.^ 



Genus APTERYGIDA Westwood. 



1840. Apterijgida Westwood, Introd. Class. Ins. Synop. Gen., p. 44. 



Type: Forficula pedestris Bon.=albipennis Meg. 



Apterygida linearis (Eschscholtz). 



1822. Forficula linearis Eschscholtz, Entomographien, I, p. 81. [Sta. Cath- 

 arina, Brazil.] 



Twenty-three specimens; fifteen males, eight females; Orizaba, Vera 

 Cruz, Mexico. January 9-16, 1892. (H. Osborn.) [U. S. N. M.] 



El Guama, Cuba, March 6. (Palmer and Riley.) [U. S. N. M.] 



Bonito, Province of Pernambuco, Brazil. (A. Koebele, on cotton.) 

 [U. S. N. M.] 



Turrialba, Piedras Negras and San Carlos, Costa Rica. (Schikl 

 and Burgdorf.) [U. S. N. M.] 



This series of males exhibit considerable variation in the structure 

 of the forceps, in some cases these appendages being constricted 

 centrally. The representatives of this sex range in size from 15 to 20 

 mm. in total length ; in the females from 10 to 15 mm. 



Apterygida californica (Dohrn). 



1865. F[orfi.cula] Californica Dohrn, Entom. Zeitung, Stettin, XXVI, p. 85. 

 [California.] 



Two males : 



Orizaba, Vera Cruz, Mexico. January 9-16, 1892. (H. Osborn.) 

 [U. S. N. M.] 



Bonito, Province of Pernambuco, Brazil. (A. Koebele, on cotton.) 

 IJU. S. N. M.] 



While tentatively allowing this form specific rank, I am not at all 

 satisfied that it is more than a mutation of linearis, specimens exam- 

 ined being almost intermediate, having the internal tooth reduced 

 to a minimum. 



* Biol. Cent.-Amer., Orth., I, PI. 2, fig. 8. 



