145 



But the typical species of Ectrephes is certainly formi- 

 carum, Pasc, described as having "antennae triarticidatae ; 

 articulo . . . teriio elongate, compresso, apice oblique 

 truncato." Anapestus kreusleri, King (of which there are 

 co-types before me), given as a synonym of E. formicarum, 

 was also described as having three-jointed antennae, with the 

 third joint "elongato oblique truncato," and so figured. The 

 position assigned to Ectrephes in the key cannot be due to a 

 printer's error, as E. clavatus, Mjob., is figured as having a 

 five-jointed club. I consider it necessary that, before some 

 of his genera are recognized, they should be formally diag- 

 nosed. Of the genera in the key: — 



Ectrephes. The character given at A is wrong; the 

 species evidently intended for A was E. pascoei, Westw. (with 

 which E. clavatus, Mjob., should certainly be associated if 

 a new genus should be proposed for it) ; pascoei and 

 formicarum by some curious error were evidently reversely 

 identified. 



Mesectrephes. Proposed for E. kingii, Westw. I think 

 it is a good genus, but that it should be formally diagnosed 

 (apparently it was unknown to Mjoberg, except from descrip- 

 tions and figures). 



Monectrephes. Being founded upon the typical species 

 of Ectrephes (there is nothing to show that this was known 

 to Mjoberg) this name becomes an absolute synonym. 



Enasiba tristis, Oil. Dr. Mjoberg's surmise (p. 5) as to 

 the antennae of this species being really composed of ten 

 joints is correct; I have examined the type. 



Ptinus amoenus, Mjob. (p. 8, fig. 1). A beautiful little 

 species allied to adeps, but abundantly distinct; Dr. Mjoberg 

 took one specimen at Mount Tambourine, and I took 

 two there. 



Ptinus australicus, Mjob. (p. 9, fig. 2). This is a synonym 

 of P. albomaculatus , Macl. ; it was described as from Kim- 

 berley, in N.-W. Australia. There are specimens in the South 

 Australian Museum from N.-W. Australia (Fortescue River), 

 and Queensland (Cairns and Townsville). It is a fine species, 

 and the beautiful figure given agrees with many of our 

 specimens. 



Diplocotes foveicollis, Oil. (p. 11). The range of this 

 species is extended to the Swan River. 



Polyplocotes pilosus, Mjob. (p. 11, fig. 3). Kimberley. 

 Although with the apparently nine- jointed antennae of 

 Polyplocotes, the joints themselves are much like those of 

 Diplocotes, or of Decemplo cotes. I have seen nothing at all 

 close to it except the species here described under the name 

 of longipes. 



