ORTHOPTERA— FORFICULARI^. 203 



perhaps two, species are also reported from Prussian amber. Keferstein' 

 speaks of an amber species, referring to Biirmeister (Handb. Entom.) but the 

 latter mentions only some crickets ("Acheten") " of the size of F. minor." 

 And Germar writes that up to 1856 but a single specimen of an earwig had 

 been found in amber, a larva agreeing so completely with the full-grown 

 larva of Forficula auricularia that description and illustration were superflu- 

 ous." Gravenhorst also refers to a German species from amber.^ Finally 

 Massalongo describes and figures* a species from the Tertiaries of Monte 

 Bolca, which he calls Forficula bolcensis, and which again he compares to 

 F. auricularia Linn. This species, which in point of fact is much nearer F. 

 albipennis Muehlf than F. auricularia, seems to be a true Forficula. The 

 same may perhaps be said of Heer's species, or at least of the two which 

 are figured (none are described), or they may belong to the same group as 

 the American species, though one at least of them is much smaller than any 

 we have found. But in Heer's species we have only a few abdominal joints 

 and the forceps from which to draw any conclusion. 



A couple of species have been found in rocks older than the Tertiaries, 

 Baseopsis forficulina Heer^ from the Lias of Schambelen and Forficularia 

 problematica Weyenb.," found in the Jura of Solenhofen. Although the 

 figures given of this latter insect are very obscure, Weyenbergh says it is 

 an earwig "sans le moindre doute," and of one of the seven specimens found 

 he says it " montre k I'extremite de I'abdomen les deux crochets, dont I'en- 

 semble reprtisente une sorte de pince, et qui caracterisent le genre Forficula." 



LABIUUROMMA gen. nov. (Aa/Jk, ovpa, ujujua). 



In first describing an earwig from Florissant I referred it hesitatingly 

 to Labidura; a second species was subsequently placed in the same genus 

 from its resemblance to the first. In my study of the much more abundant 

 and better material now at hand I was at first inclined to I'efer not only 

 these two species but all the others, including a considerable variety of 

 forms, to the old genus Forficula, the structure of the antennae in particular 



' Naturg. Erdkorp., vol. 2, p. 331. 



» Berendt, Bernst. befiudl. organ. Reste Vorw., vol. 2, pt. i, p. 33. 



^ Uebers. scliles. Gesellsch. valerl. Cult., 18.^4, 93. 



•< Massalongo, Stud, pal., 15-16, pi. 1, figs. 5-7. 



^Heer, Urwelt der Schweiz, 2d edition, p. 94, pi. 7, fig. 5, 



6 Arch. Mus. Teyl., vol. 2, p. 274, 



