Male Genital Armature of the Dermaptera. Part II. 537 



Genus Eulabis Zacher. 



Apterum; abdomen ad apicem valde dilatatum ; forcipis 

 bracchia $ valde remota ; metaparameres lanceolati, margine 

 externo, convexo ; virga adest. 



Apterous ; abdomen $ strongly dilated apically, the tenth 

 segment being the widest ; forceps with branches <£ very remote 

 at base ; metaparameres lanceolate, at least four times as long as 

 broad, gradually attenuate, external margin convex ; preputial 

 sack with no chitin-plates, and no teeth discernible ; virga weak. 



Type. — Gonolabis michaelseni Burr. 



Range. — Western Australia and Java. 



This is evidently what Zacher figures as Eulabis dentata, and 

 refers to in the text as Gonolabis woodtoardi var. dentata Burr, 

 where woodtoardi must be a lapsus calami for michaelseni. 



The form of the metaparameres is quite distinct from that of 

 the Neotropical Eulabis saramaccensis ; this and the very different 

 form of the abdomen amply justify the separation of that American 

 species into a distinct genus. 



I have been able to examine the genitalia of one of my original 

 syntypes of Gonolabis michaelseni. The metaparameres are indeed 

 acute, but not so narrow at the apex as those figured by Zacher ; 

 both margins are gently convex, and the tips pointed, but not 

 abruptly attenuated. I can detect no chitinous plates, nor teeth 

 (PL XI, fig. 4). 



This genus must also include the rare Javanese Gonolabis 

 kirbyi Burr ; only two specimens are known, both in my collection. 

 The metaparameres are about three times as long as broad, widest 

 in the middle, and acuminate. 



"We may neglect the nomina nuda of Verhoeff, referred to by 

 Zacher, namely E. kamerunensis and E. polita (PI. XI. fig. 3). 



Genus Spandex g. n. 



Elytra et alas perfecte explicata; metaparameres haud triplo 

 longiores quam latiores, abi pte attenuati, apice acuminati. 



Fully winged ; generallj resembles Psalis, but the metapara- 

 meres are acute at the tips, rather abruptly attenuate, and not 

 three times as long as broad ; the preputial sack is unarmed ; virga 

 gently sinuate. 



This genus removes from Psalis proper some of the smaller 

 species, as P. pulchra Eehn., which I take as type, and the very 

 distinctive P. hasnschi Burr. Probably also P. rosenbergi will fall 

 in here, and perhaps P. f estiva Burr and P. nigra Caudell (PL XI, 

 figs. 5 and 6). 



Dec. loth, 1915 2 p 



