The Male Genital Armature of the Dermaptera. 433 



which is a female ; and therefore we must await the discovery of 

 the male before the truly typical genitalia of the genus can be 

 described, but there is every reason to believe that they will be 

 found to closely resemble those of the other African species. 



The creature described by Zacher under the name of P. liturata 

 is certainly not that species ; his original specimen from Bulongwa 

 is in the Berlin Museum (PI. VI. fig. 7). The apex of the abdomen 

 has been lost, which does not matter so very much, since Zacher 

 has described and figured the metaparameres, which are uncom- 

 monly like those of D. wigginsi Burr ; it seems that Zacher was 

 depending on Yerhoeff's determination. There is a label attached to 

 the specimen in Verhoeff s writing, " Pyg. phoenix aberrans," which 

 is rather confusing, as the P. phoenix of Zacher is a West African 

 species, from the Kamerun, which is unknown to me, and insuffi- 

 ciently described. 



Accordingly, Picrania is now restricted to the type species, 

 P. liturata Stal, of which the male is unknown ; P. angnstata 

 Dohrn must be removed to Kalocrania or perhaps to Cranopygia, ; 

 the so-called P. liturata of Zacher is uncommonly like D. wigginsi 

 Burr, but a size smaller ; and P. phwnix of Zacher remains a doubt- 

 ful species until his type has been identified, figured, and redescribed 



Genus Dicrana Burr. 



The type of Dicrana is D. frontalis Kirby, the genitalia of 

 which have not yet been examined, but as all Ethiopian Pygidi- 

 cranids so far studied have similar genitalia we may expect 

 D. frontalis to be of the same form until it is proved otherwise, 

 and Dicrana is restricted to the Ethiopian forms having long 

 lanceolate metaparameres, with a long, narrow apically bifid, 

 internal tooth (PI. VI. figs. 1 to 6). Zacher figures D. caffra Dohrn 

 and D. elongata Zacher, which I do not yet know. I add D. bettoni 

 Kirby, D. biafra Borm, and D. wigginsi Burr. I also include 

 Picrania phoenix Zacher as having parameres of the same type, 

 since Zacher gives us reason for including it in Picrania, as defined 

 by me. 



It should be noted that in his table of genera Zacher refers to 

 a single tooth, but in his figures of D. caffra and D. elongata he 

 distinctly shows the inner tooth of the metaparameres to be bifid. 



Sjiecies definitely ranged here — 



D. bettoni Kirby. D. caffra Dohrn. 



D. wigginsi Burr. D. phoenix Zacher. 



D. elongata Zacher. D. biafra Borm. 



S '/ iccies probably to be ranged here — 



D. separata Burr. D. frontalis Kirby. 



D. livida Bor. 



