28 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 



dish brown toward extremities; posterior pairs darkest. The color 

 of all parts as above given subject to modification by a more or less 

 strong violet tint from the deeper tissues, this being particularly strong 

 in the head and in the anterior and posterior dorsal plates and par- 

 ticularly in younger or recently moulted individuals. 



Body moderate; about eight times longer than width of tenth dorsal 

 plate; strongly narrowed cephalad from .tenth dorsal plate and 

 abruptly narrowed caudad of this plate as usual. The cephalic plate 

 sparsely hirsute with long and short bristles, the first dorsal plates 

 being clothed subsimilarly to cephalic plate, the last few plates more 

 sparsely clothed, the median portion of the most posterior being sub- 

 glabrous; legs clothed more abundantly with shorter, finer hairs 

 among longer and stouter, spinescent bristles which are more abun- 

 dant on the ventral and lateral surfaces of joints proximad of tarsus; 

 antennae densely subpilose. 



Head mostly longer than wide, typically in about ratio 12:11 ; sub- 

 rotund, widest near middle of length. Lateral margins strongly con- 

 vexly rounded at middle, caudad of which they are nearly straight 

 or weakly incurved and converge to the truncate caudal margin with 

 the corners well rounded; conspicuously narrowed in front of middle; 

 anterior margin between antennae from nearly straight to a little 

 incurved. Strongly convexly elevated. A distinctly marked furrow 

 extending from ocellus to ocellus and curving caudad from its ends to 

 middle; on caudal portion of plate two broad and distinct furrows 

 which diverge cephalad to the transverse furrow; a broad shallow 

 median longitudinal impression in front of the suture. Lateral and 

 anterior borders of head commonly depressed. 



Ocellus very large; strongly convex; bluish; margin not sharply 

 defined. 



Antennae long; attenuated from base, becoming much more slen- 

 der distad. Articles 39 or 40, when 40 the ultimate articles commonly 

 proportionately shorter; second article much longest as usual; usually 

 the four succeeding the second subsimilar to each other, of moderate 

 size, while the next eight are shorter and likewise similar to each other; 

 articles succeeding the fourteenth longer and more slender and more 

 loosely articulated, with among them in most specimens a regular 

 alternation of two shorter articles with one clearly longer one excepting 

 that the last six are all long. 



Prosternum twice as wide as long; the anterior margin arching 

 forward in a semicircle, angularly incised at middle as usual. Pro- 

 sternal teeth 3+3, small and pale; on each side the two innermost 



