Ervthromuia. 



249 



with the fore-corners removed, of moderate size, bearing 

 one or two dark hnes. Wing-cases short, 5 '5 mm. Legs 

 (Fig. 44j rather long, fore- 8'5mm., mid- lomm., hind- 

 13mm., paler than the general ground-colour; on each 

 femur two conspicuous dark rings, and one near the 

 basal end of the tibi;e ; all the legs have several 



Fig. 4v — Part of a Caudal Lamklla of XviiPH of ERVTHROiniA 



NAIAS. 



(Much magnified.) 



longitudinal rows of small dark points. The abdomen 

 tapers gradually to the posterior extremit)', and is 

 irrorated with small black dots ; the segments are fairly 

 equal, and each, except the tenth, is bounded posteriorly 

 by a row of about eight white dots, very conspicuous on 

 dark specimens. Each segment, except the tenth, has a 



