EROTYLID/E 165 



Triplax puncticeps n. sp. Body more elongate and with very much 

 more rectilinear parallel sides than in any of the forms mentioned above, 

 and also with a smaller head, the coloration as in thoracica throughout; 

 head not quite half as wide as the prothorax, with rather coarse, deep, 

 close-set punctures, sparser centrally, the prominent eyes moderate; 

 antennae not as long as the head and % prothorax, gradually pale toward 

 base as usual, the third joint but little more than twice as long as wide, 

 as long as the next two, the eighth shorter than wide; first two joints of 

 the club rather transverse; prothorax strongly convex, three-fourths wider 

 than long, the moderately converging sides broadly and evenly arcuate 

 from base to the sharp and advanced apical angles, which have a fovif- 

 erous dorsal thickening; basal lobe broad and gradual, very much feebler 

 than in thoracica; punctures relatively stronger and somewhat closer, 

 perforate; elytra nowhere distinctly wider than the thoracic base, the 

 parallel sides nearly straight, the apex broadly and subcircularly rounded, 

 three-fifths or more longer than wide, the surface as in thoracica, except 

 that the punctures of the series are coarser and less close-set; sterna 

 strongly but not densely punctate, the abdomen much more finely and 

 more pubescent than in the preceding, as in thoracica. Length ( 9 ) 4.6 

 mm.; width 2.0 mm. Texas (Austin). 



The single type represents a species truly of the thoracica order, 

 but distinct in its narrower and more parallel form, smaller head, 

 more convex prothorax with feebler basal lobe, coarser elytral 

 punctures and more pubescent abdomen. 



The two following species belong to the californica section of the 

 genus, in having the body narrower and relatively more elongate, 

 and, as mflavicollis Lac., with the under surface in great part fuscous 

 or blackish. 



Triplax monostigma n. sp. Elongate, oblong-suboval, more depressed 

 than usual, shining; head and prothorax above and beneath, mesoster- 

 num, legs and antennae pale flavo-testaceous, the scutellum and entire 

 elytra deep black, the pronotum with a small black spot at the middle 

 of the apex; epipleura pale, the post-sterna and abdomen darker, piceous, 

 the latter gradually pale posteriorly; head moderate, barely more than 

 half as wide as the prothorax, with rather strong but well separated 

 punctures, the eyes very moderate though prominent; antennae as long 

 as the head and prothorax, the third joint not quite as long as the next 

 two, eighth somewhat longer than wide, the club rather less pale than the 

 shaft and as long as the preceding four joints; prothorax trapezoidal, 

 three-fourths wider than long, the sides moderately converging and very 

 evenly, feebly arcuate from base to the rather sharp advanced apical 

 angles, the apex more sinuate near the angles; base with a very broad, 

 gradually formed lobe and an entire fine margin; punctures rather strong 

 and deep but widely separated; scutellum transverse, broadly angulate; 

 elytra at base just visibly wider than the thoracic base, still wider medi- 

 ally, one-half to three-fifths longer than wide, the parallel sides evenly 



