GENUS NOTASPIS. 351 



SO ; it is, however, a very extreme species, and in my 

 opinion a species such as N. lucoriim would make a 

 better type. 



Rostrum usually more or less pointed, occasionally 

 very sharply so, as in N. hipilis (PI. XXVII, fig. 1). 

 The genge do not usually form distinct lobes. The 

 rostral hairs are generally fine and curved. 



The Labium usually does not cover more than half 

 the opening of the camerastomum ; it is generally as 

 broad as or broader than long (PI. XXVII, fig. 3 ; 

 PL XXIX, fig. 3 ; PL XXXIII, fig. 12) ; it usually has 

 a rounded posterior and a truncated anterior margin. 



Palpi usually rather filiform, no joint being specially 

 enlarged (PL XXVII, fig. 5) . The first joint is short, 

 as usual ; the second is very long, almost as long as 

 the remaining three ; the third and fourth short ; the 

 fifth rather long. 



Maxillae usually well developed, ordinarily bilobed, 

 sometimes with a sharp inner tooth between the lobes 

 {N. tibialis) J sometimes more complex (PL XXXIII, 

 fig. 3). . „ 



Mandibles of the ordinary form, each limb usually 

 tridentate or quadridentate. 



Lingua well seen in dissections of many species. 



Pseudo-stigmata sometimes rather dorsal, sometimes 

 almost hidden by the edge of the abdomen ; usually 

 they are small but distinct ; in the single aquatic spe- 

 cies they are scarcely visible from the exterior ; this is 

 the rule rather than the exception with aquatic species. 



Tectopedia moderately well developed in many 

 species, especially the first and second tectopedia, but 

 they do not run up the side of the body as in Oribata, 

 &c. ; in some species they are very small. 



Opisthophragmatic processes very small or entirely 

 absent ; the median process is not present in any species 

 which I know of. 



Legs usually of moderate length ; the joints, except 

 the COX83, somewhat clavate. The femora of the two 

 front pairs of legs are usually enlarged ; the femora 



