The Dermatoptera. 315 



ODOJSTOPSALIS, nov. gen. 



Anechune et Apterygidx vicinum genus. Corpus robustum ; an- 

 tenniTB 12-segmentat;e, 1 magno, valido, apice incrassato, 2 minimo, 

 3 longo, 4 quam tertiuui vi.x; brevius, ceteris elongatis ; pronotum 

 magnum, trans verso-quadratum, capite baud angustius. Elytra 

 alaeque jjerfecte explicata. Pedes validi, segmento secundo tarso- 

 rum valde dilatato. Abdomen robustum, plus minus depressum, 

 apud ^ apicem versus dilatatum, ^ medio dilatatum, apice attenua- 

 tum ; segmentis 2 and 3 tuberculis lateralibus distinctis instruetis ; 

 segmentum ultimum dorsale (^ breve, latum, margine postico tuber- 

 culatum ; apud 5 declive, attenuatum ; segmentum penultimum 

 ventrale transversum, margine postico rotundato, segmentum ulti- 

 mum obtegens, apud 5 longius, rotundatum. Pygidium (J brevis- 

 sime, haud productum, valde obtusum, apud $ breve, quadratum, 

 apice truncatum, vel conicum. Forcipis braccbia ^ valida basi 

 remota, triquetra, sensim incurva, apicibus baud attingentibus, prope 

 basin dente valido armata. 



Ab Anechum difFert : pedibus brevibus, robustis ; antenna- 

 rum segmento 4 longiori. 



Ab Apterygida ,, : statura valde robustiori, abdomine 



dilatato. 



A Chelidura ., : elytris alisque perfecte explicatis. 



A Forficula ,, : forcipis bracchiis ^ nee dilatatis 



nee deplanatis. 



Typus generis : Odontopsalis Jiarmandi, Burr, sp. n. 



This genus caused me some hesitation. The three 

 males which I have described as 0. harmandi have the 

 appearance of a wioged Chdidura ; another form, which 

 I have described under the name 0. lewisi, scarcely differs 

 from 0. harmandi, but yet more nearly approaches the 

 typical species of Apterygida. Of the latter species, I 

 have long possessed one which I regarded as A.japonica, 

 Borm.; later, I acquired a male and two females, labelled 

 by de Bormans himself, "A.Ja2)onica, Borm." As a matter 

 of fact, the forceps are entirely different from those of the 

 true A. japonica; the latter species could be placed in 

 Apterygida with justification, but still it is impossible to 

 separate it from 0. harmandi, which certainly requires 

 the erection of a new genus ; the females of the two new 

 species are almost identical. 



