218 REVISION OF THE AMYCTERIDES, ui., 



NoTONOPHES Sloane. 



Sloane, Trans. Koy. Soc. S. Australia, xvi., p. 2o4. 



Tj'pe of genus, Cuhicorrhynclms cichlodes Pase. 



The following extract from the generic diagnosis apj^ears to 

 contain the main i3oints of generic importance: "Allied to Talauri- 

 HKs. Form oval, robust. Rostrum broad, flat, not divided from 

 head; a light linear longitudinal impression in middle; external 

 ridgeaj prolonged backwards to eyes, becoming more prominent 

 behind; scrobes widening backwards and reaching eyes.'' The 

 remainder of the diagnosis contains no feature peculiar to the 

 genus, and is applicable to many forms of Talaurinus. Sloane 

 says {loc. cit., p. 235), "Except for the head, the species on which 

 this genus is founded has entirely the form of a Talaur'musJ' 



To the above combination of features may be added, as a generic 

 characteristic, the supraorbital crest, as, with the single exception 

 of .Y. hi/stricosus Bohem., which I regard as doubtfully congeneric, 

 it is present, and strongly developed in all the species known to 

 me. The rostrum is always broad, and the external ridges extend 

 back towards the eyes, and end in the supraorbital crests, but 

 tliough, in general, the plane is flat, in some the median line is 

 further depressed and widened in front, forming a concave, median 

 area which extends anteriorly into the postmarginal sulcus. The 

 external borders of the dorsum of the rostrum are flat, and not 

 definitely ridged; generally, they show an outward divergence 

 towards the base. In some species, the supraorbital crests appear 

 to be the direct continuation backwards of the external ridges; in 

 others, however, the crests arise at a distinct angle from the general 

 line of the ridge. The crest itself is flat, and projects backwards 

 and outwards from the side of the head, above the eye. The inter- 

 nal, rostral ridges are not distinctly marked off from the rest of 

 the dorsum in the type-species; in X. auriger, they are present 

 though not conspicuous, and are flattened above; while in N. nngu- 

 licollis, they are small, rounded, and almost nodulose. In the more 

 typical species, the head and rostrum run directly into one another; 

 in iV. angulicoUis, however, they are, to some extent, separated by a 



