240 UEVISION OF THE AMYCTERIDES, iii.. 



aiitile to middle, tlieiu-o as smaller tiattened tiibeivles external to 

 third row. Sides striate, interstices with small. Hattened tubercles. 

 Fifth ventral seirment with an irregular mesial depression rather 

 strongly ]>un(tured. Penis with apex emarginate. lateral angles 

 strongly jn-oduced. out-turned. Tibijr long, anterior with a tew 

 small dentiform projections on under surface. 



9. Ltirger, more robust: bead and rostrum as in g. Pro- 

 tborax (7 x 11mm.) widely explamite-tubereulate as in ^, mesial 

 Tubercles small, transverse, rounded, somewhat depressed, very 

 irregularly arranged, twelve on left and ten on right side in 

 the type. Elytra (21 xl2mm.) more ampliate, more robust: 

 apex strongly tlanged, the flange strongly mucronate in centre: 

 disc, save for seriate punctures, sm(H)th between the tubercles: 

 tirst r«)w with nine tul>ercles, last four on declivity conical: 

 second row with eight : a row of three corresponding to fourth 

 interstice: third row with nine, from midtlle extending down 

 declivity, tirst four rounded, transverse, the others conical : 

 fourth row with about eight, well defined transverse tubercles, 

 then with more obsolete ones. Beneath convex: fiftli segment 

 with strong, rugose punctures at apex. Di'metts/oits: g. '2d x 8nnu.: 

 9, 35 X 12 mm. 



Hah. — West Australia. Kellerherrin. Oonjerdin : several speci- 

 mens, without exact locality. 



When the description of this species was drawn up, I regarded 

 it as distinct from M. draco, on account of the ditference in tiie 

 granularity of the derm. I have had reason to <l(iubt tlie value of 

 this feature, however, for separating the species, and it may he 

 perhaps better to regard .1/. insiiviia as a variety of M. draco. A 

 specimen ((J) received from Mr. Froggatt, has the prothoracic 

 tubercles four on each side, but the derm is smooth between the 

 tubercles. When the description was drawn up. I had. under 

 examination, in addition to the types, six specimens belonging to 

 the British Museum — one male and five females. The nuile and 

 one female had the tubercles as in the types. The other four dif- 

 fered in the nuu-h more numerous prothoracic tubercles, now hardly 

 larger than granules: the elytral tuberc-les also appeared to be 



