414 



JAMES WATERSTON. 



Head (fig. 1, e) nearly twice as broad as deep (17 : 9). The distance between the 

 orbits across the middle of the face over four times an eye diameter. Scrobes almost 

 circular; exactly in the middle of the face, and separated by less than the diameter 

 of either. Distance between the lateral ocelli over one-third of that between the 

 eyes across the vertex. Post-scapal depression broad and shallow, with no definite 

 margins. Below the scrobes and above the mouth-edge the face is somewhat raised ; 



Fig. 1. Timioderus refringens, gen. et sp. n., $ ; a, antenna, and 



enlargement of ring joint and first funicular ; b, labrum ; c, right 



mandible ; d, left mandible ; e, head from in front. 



on this area (as well as on the occiput) the sculpturing tends to form concentric 

 striae and rugae, elsewhere it consists of highly raised coarse reticulations. Mouth- 

 edge concave ; twice slightly sinuate at the sides, and wdth middle broadly and 

 gently convex. Antemme (fig. 1, a) : length, 1 '9 mm. ; scape short and broad (7 : 3) ; 

 pedicel (-2 : 3) two-sevenths of the scape ; funicle, 20, 16, 14, 13, 13, 12, 12 ; club 

 (indistinctly septate) 8, 11, 9 ; breadth of both, in the same ratio, 12. The sensoria 

 on the funicle and club are very numerous. In some the blade is free, in others 

 almost entirely adherent. Mouth-parts : labrum (fig. 1 , b) long, truncate, with apically 

 convergent sides, and bearing the spiny bristles figured. Mandibles (fig. l,c,d) stout, 

 narrow, the teeth on the right one subequal, broad, though pointed ; the lower tooth 

 of the left acute. 



