BY E. W. FERGUSON. 241 



more nnnierous. F\)r i)iirposes of fomparison. I append a short 

 table sliowiiiu- tlie ditterence in the number of the prothoracie 

 tubercles; the elytral tubercles are also given, numbered for con- 

 venience according to the interstices on whicli tliey are situated, 

 not according to rows. It is ])ossible tiuit these specimens should 

 l)e regarded as a distinct species, and tlie examination of a series 

 including the male, might settle tlie question ; but witli tiie material 

 at present availal)le, I cannot consider them distinct from M. itisitf- 

 ni<i, and only separate that species from M. draco with doubt. I 

 would, therefore, pro tern., regard as M. dnico those species having 

 the derm more or less grannlose, and the prothoracic tubercles 

 few in number; as 31. in!<if)tns, tliose which have the prothoracic 

 tubercles more or less numerous, and the derm non-granulose. at 

 the same time recognising the existence of forms, intermediate or 

 otherwise difficult to classify. 



Prothoracic tubercles. ^ Elytral tubercles. 



Left. Right. 2 3 4 6 7 



Macramycterus tibialis, n.sp. 

 (Plate xiv., fig.9.) 



^. Large, elongate, subparallel. Black, tubercles nitid, prac- 

 tically without clothing. Head and rostrum as in the genus, the 

 convexity of the forehead wedge-shaped, suhcarinate: internal 

 rostral ridges rather strongly convergent basal ly. 



Prothorax(5x 7 mm ) subdilatate on sides, apical margin with 

 o))solete granules, median and sublateral s|)aces smooth, not stii- 

 gose or cicatrised. Median tul)ercles six in nnmbei- on each side, 

 rounded, slightly transverse and in single series; lateral border 

 iu)t explanate, with a single row of tubercles, live in number, 

 starting from tlie ai)ex. tlie Hrst very small, then grn<lually increas- 

 ing in size to the mi<ldle une( the fourth), space between last and 



