REVISION OF TENEBRIONID SUBFAMILY CONIONTIN^ I49 



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subexplanate, the bead finer, otherwise similar in outline and in 

 its very dense and perforate punctuation ; elytra more elongate, 

 more gradually and acutely ogival at tip, fully a third longer 

 than wide, the punctures similarly muricate and uneven in size 

 but not quite so dense ; prosternum less coarsely and more sparsely 

 punctate, the process narrower, the abdomen similar, the coarse 

 punctures of the hind femora remote, the basal joint of the anterior 

 tarsi stout and nearly as \\\ punctulata. Length i i.o mm. ; width 

 5.65 mm densa n. sp. 



5 — Body narrow and parallel, strongly convex, blackish-brown or 

 paler, the under surface, legs and antennae rufous; head strongly 

 and densely, moderately coarsely punctui^ed, nearly as in muricata 

 but with the sinus broader and deeper, parabolic, the sides before 

 the eyes only moderately prominent, obliquely rounded, the an- 

 tennae nearly similar ; prothorax twice as wide as long to very 

 slightly more, formed as in densa and likewise very narrowly 

 subexplanate at the sides, coarsely, very deeply and densely punc- 

 tate, the punctures at the sides sparse and mingled with smaller 

 punctures ; elytra nearly a third longer than wide, the sides par- 

 allel and very feebly arcuate, not rounding at base, gradually and 

 arcuately narrowed posteriorly to the obtusely ogival tip, the sur- 

 face smooth, with the close-set, muricate and unequal punctures 

 of the preceding species; prosternum strongly, closely punctured, 

 the hind femora coarsely and sparsely, the abdomen finely but 

 strongly, sparsely so and with the punctures scarcely larger or 

 denser toward the sides. Length 7.6-9.7 mm.; width 3.75-5.0 

 mm angustula Csy . 



6 — Form narrower, more elongate and more convex than in punctu- 

 lata or muricata^ rather less narrow and more elliptic than in 

 ang'Hstula.i brownish-black, the legs and antennse more or less 

 rufo-picescent, dull in lustre above; head broadly rounded at 

 apex, coarsely, densely punctate, especially toward the subobsolete 

 transverse impression, the sides more broadly rounded than in any 

 other species except detisa^ much more prominent than the eyes; 

 prothorax scarcely more than twice as wide as its median length, 

 the sides subevenly and distinctly converging and broadly arcuate 

 from base to apex, the apical angles prominent, very narrowly 

 blunt, the surface more coarsely and densely punctate than in any 

 other species, with a partial elevated impunctate line along the 

 middle, the sides narrowly concavo-explanate and obsoletely so at 

 base as usual ; elytra fully a fourth longer than wide, the sides 

 rounding and converging to the rather obtusely ogival tip behind 

 the middle, rather rough, with feeble traces of a ridge near and 

 oblique to the suture, not extending to base or apex, the surface 

 more coarsely muricate than in densa or muricata and equally 

 closely, with numerous small, suberoded and more opaque areas ; 

 under surface punctured as usual but more strongly ; pubescence 

 and lateral fimbriae as in muricata^ sparser and less fulvous than 

 in atigustula. Length ii.o mm. ; width 5.4 mm. 



frontalis n. sp. 



