4G8 BRITISH ORIBATID^. 



it is founded on cymha as a type ; and that it properly 

 would include Nicolet's E. tibialis, which I have not 

 found in England. 



It must also be remembered that very few species 

 are known ; possibly therefore some day the generic 

 description may require modification. 



The Rostrum is rounded and blunt ; extremely so in 

 E. cymha ; the rostral hairs are generally short. 



The Labium is broad and short ; it has a curious 

 semicircular central projection, answering in fact to 

 the ligula (or paraglossae) of insects. The existence 

 of such an organ as this is common enough among the 

 OribatidcE, but the form and exact position are unusual ; 

 and the organ is generally in two halves, and conse- 

 quently paired, whereas in this instance it is azygous, 

 as in Pelojjs. 



The Palpi have the second joint long and thick, the 

 third and fourth short, the fifth long and thin, becoming 

 suddenly thinner about the middle, where there may 

 be a projection or branch (PL XLTY, fig. 5). 



The Maxillae are long with produced outer angles 

 (fig. 14) ; they are unusually free from the lip in E. cymha, 

 and show apophyses for attachment of muscles very 

 plainly in E. hrevipes. This does not appear in fig. 14. 



The Mandibles are short, but stout and powerful, 

 the movable arm of the chela sometimes much curved, 

 bidentate at the tip. The teeth powerful, and those 

 of the fixed arm set within the edge. 



The Pseudo-stigmata are almost at the edge of the 

 body. The pseudo-stigmatic organs of the British 

 species have very short peduncles and almost globular 

 heads ; but this would not apply to Nicolet's E. tihialis. 



The Lamellae are absent. 



The Tectopedia. — The second pair are moderately 

 developed, the first absent, the others just indicated. 



The Opisthophragmatic processes are entirely ab- 

 sent. 



The Apodemata are short, not joined to the sternum. 



The Legs in the known species seem to be rather 



