1876.] 325 [Scudder. 



abdomen (8 mm.) depressed, laminate, perfectly straight, entirely 

 simple and tapering apically to a blunt point. 



The entire Old World, 

 whence it has spread into nearly all parts of the western hemisphere. 

 Labidura rufescens. 



Forjicula rufescens Pal.-Beauv., Ins. Afr. Amer., ii, 35, pi. Orth. 1, 

 fig. 2 (1805). 



Forficesila rufescens Serv., Orth., 24-5 (1839). W. Africa. 



Labidura Servillei. 



Labidura Servillei Dohrn, Stett. Ent. Zeit., xxiv, 316-17 (1863). 



E. India. 

 Labidura tarsata. 



Forficula tarsata Westw., Proc. Zool. Soc. Lond., v, 129 (1837). 



Labidura tarsata Dohrn, Stett. Ent. Zeit., xxiv, 311-12 (1863). 



Manilla. 

 Labidura terminalis. 



Forficesila terminalis Serv., Orth., 25 (1839). Mauritius. 



Labidura tertiaria. 



Labidura tertiaria Scudd., Bull. U. S. Geol. Geogr. Surv. Terr., 

 Ser. 2, 447-49 (1876); lb., ib., n, 259 (1876). Colorado [fossil]. 



Labidura Tomis. 



Chelidura TomisKol., Melet. Ent., v, 74, pi. 17, fig. Ga-b (1846). 



Forficula Tomis Fieb., Lotos, in, 254 (1853); lb., Syn. Eur. 

 Orth., 71 (1854). 



Forficula Helmanni Kitt., Bull. Soc. imp. Nat. Mosc, xxu, iv, 

 438-39, pi. 7, figs. 1-2 (1849). 



Forficula elongata Eversm, (nee Fabr.), Bull. Soc. imp. Nat. Mosc, 

 xxxn, 123 (1859). Armenia. 



I place Kolenati's and Kittary's species together on the authority of 

 Fieber. I have not been able to consult Kolenati's plate or descrip- 

 tion, and do not know the insect in nature. 

 Labidura trispinosa. 



Labidura trispinosa Dohrn, Stett. Ent. Zeit., xxiv, 310-11 (1863). 



E. India. 

 Labidura vicina. 



Forficesila vicina Luc, Expl. Alg., in, 5-6, pi. 1, figs. 2, 2a-e 

 (1846). 



Labidura vicina Dohrn, Stett. Ent. Zeit., xxiv, 318-19 (1863). 



N. Africa, India, E. Indies. 



