GENUS HEBMANNIA. 441 



could not well be found, than the fact that treating 

 them as generic has led Berlese to transfer E. picea to 

 Nothrus, particularly as he has been forced to do so in 

 defiance of the rest of his own definition, for picea has 

 the most globose body of all the known Hermannice. 



I fully agree with Berlese that nanus is a Hermannia 

 not a Nothrus ; as to histriata, however, I am inclined 

 to allot it to the Sermannia end of the bridge, rather 

 than to the Nothrus end ; but opinions may well differ, 

 and no assistance can be gained from Nicolet on this 

 point, as he erroneously supposed it to be a young 

 form of Nothrus 'palustris. 



The Texture is hard, rough, and dull in all known 

 species. 



The Rostrum usually blunt and heavy, sometimes 

 with a tendency to be trifid, it is not sharp-pointed in 

 any species which I know. The rostral hairs vary, but 

 are generally rather thick. The lamellar hairs are 

 generally large, although there are not any lamellae. 



The Labium is usually rather short and broad, 

 scarcely covering half the camerastomum ; it has a small 

 median point ; it is not generally prolonged forward to 

 form aligula (PI. XLI, fig. 3; PL XLIII, fig. 9). 



The Palpi are generally rather short and thick, the 

 second joint being often considerably thickened {R. 

 reticulata ; see also S. picea, PI. XLI, figs. 3, 4). The 

 first joint is also generally thick ; the fifth shorter than 

 usual. 



The Maxillae are generally large, powerful, and 

 deeply dentate {H. picea, H. reticulata). In //. nanus 

 they are long, but not so deeply dentate. 



The Mandibles are ordinarily rather short {H. picea), 

 but powerful, and with rather numerous and well- 

 formed teeth ; in H nanus, however, they are weak, 

 and slight in their dentition. 



The Lingua is well developed. 



The Pseudo-stigmata are generally rather small and 

 dorsal, not projecting much. The pseudo-stigmatic 

 organs vary considerably in different species. 



