325 



depressed between eyes, crested close to eyes on upper-surface,. 

 and lobed (35 ) just below them. Third tarsal- joint not wider 

 than second, and rather feebly bilobed. The other characters 

 are mostly common to the group. 



Without knowing the typical species of Myarda it should, 

 perhaps, be left untouched. I think it extremely probable, 

 however, that it will eventually be merged in Zephryne. The 

 sculpture of the head, (36) rostrum, elytra, and tarsi all point 

 strongly in that direction. 



Ethemaia. „ 



The typical species of this genus is certainly sell at a, but 

 at the time it was described Pascoe referred to it a second 

 species (adustaj, in which the base of the rostrum was not 

 strongly bilobed. The essential features of the genus amongst 

 its close allies are: — Head without a crest immediately above 

 each eye (although sometimes with one on each side of the 

 base of rostrum), and without infra-ocular lobes. Eyes rather 

 large, convex, and distinct from above. Third tarsal-joint 

 deeply bilobed, and usually wider than second. (37) 



Ethemaia geiffithi, Lea. 



Some specimens from the Clarence River and Gosford (38 ' 

 differ from the type in having the clothing of a dingy 

 brownish-grey or muddy-brown. 



Ethemaia adtjsta, Pasc. 



An extremely variable species that occurs on a small, 

 thick-leaved, prostrate plant at Lucindale ( 39 ) is probably 

 adusta. It has the rostrum apparently with five ridges, but 

 there are really six, the two median ones, however, are so 

 close together that a very slight displacement of the clothing 

 or a small amount of dirt causes them to look like one ; the 

 two outer ones are also often feeble, so that the rostrum 

 appears on various specimens to have three, four, five, or six 

 costse. The elytra of the type were described as having 

 "interstitiis alternis modice elevatis, declivitate singulorum 



(35) The ocular lobes, however, are sometimes very feeble, but 

 the lower-surface of the eye on such species is oblique, not circular 

 in section. 



(36) In particular the supra-ocular crests, and infra-ocular 

 lobes, the latter mentioned in the specific description, "Eyes . . . 

 in contact with a rounded ledge below." 



(37) In E. apicalis the third is the width of the second. 



(38) It is now first recorded from the mainland. 



(39) It is so abundant there, that on the smoke of a reed-fire 

 being driven across certain flats, the very ground appears to be 

 moving. 



