190 MEMOIRS ON THE COLEOPTERA 



basal angles to the apex; base unmargined, feebly arcuate, very 

 slightly sinuate at each side, the lateral margins not thick; punctures 

 obliterated medially, becoming rather distinct near the sides and, 

 near the apical angles, very coarse, shallow, confluent and rugose; 

 anterior pit rugose; scutellum ogival, smooth, with a fine line of 

 irregular punctures parallel to the external edges; elytra nearly a 

 fourth longer than wide, not evidently wider than the prothorax and 

 not quite twice as long, circularly rounded in about apical two- 

 fifths; sides very feebly sinuate between the humeri and the middle; 

 punctures coarse but not very close-set, impressed, each enclosing a 

 ^mailer annulus, in great part serial when present, but wanting almost 

 throughout basally, in inner third thence to the apex and in outer 

 fourth throughout, this latter region smooth and polished like the 

 sutural but with very minute sparse punctulation; pygidium densely 

 scabriculate at base and broadly toward the lateral ends, sparsely 

 and moderately punctate broadly at the middle and apex; anterior 

 tibiae with a broad fourth tooth and a similarly broad tooth between 

 the second and third; last abdominal segment with coarse deep close- 

 set punctures throughout; hind tarsi much shorter than the tibiae, 

 much more slender than in gyas Er. Length (9) 23.0-23.5 mm.; 

 width 11.9-12.4 mm. Lower California (San Jose del Cabo). 

 [Ligyrns bryanti Riv.] bryanti Rivers 



Elytral sculpture indicating no change in character toward the suture, 

 the punctures becoming smaller and more confused postero-exter- 

 nally, however, as usual throughout the genus 2 



2 Body somewhat as in the preceding in outline and habitus, but a 

 little smaller and black, with but feeble piceous tinge, very shining, 

 bright castaneous beneath, the legs concolorous; head slightly larger 

 and with rather more convex eyes, similarly sculptured, the large 

 frontal impression shallower and more diffuse; tubercles and clypeus 

 nearly similar; mentum more convex, more setose basally; prothorax 

 similar in general dimensions, but with the sides converging from base 

 to apex less arcuate, the rugose anterior pit larger, more semicircular; 

 sparse punctures fine but distinct medially, very distinct but barely 

 closer toward the sides, close-set but not at all confluent toward the 

 apical angles; scutellum with the fine subpunctulate line at a greater 

 distance from the edges; elytra similar in form and relative size but 

 strongly and deeply punctured, the punctures widely separated, 

 impressed, each enclosing a small annulus, rather close-set in the 

 geminate series, confused broadly elsewhere; pygidium as in the 

 preceding but more convex, the large smooth medial region with 

 remote and very minute punctures; anterior tibiae with the fourth 

 tooth broader and still feebler, the one between the second and 

 third teeth obsolete; last abdominal segment (cf ) smooth, impunc- 

 tate, the apical sinus distinct. Length (cf ) 21.5 mm.; width 11.2 

 mm. A single example, said to have been found in Florida but more 

 probably Mexican laevicollis Bates 



Body much broader and rather less convex, oblong-oval, rather inflated 

 behind, black, shining, the elytra with very faint piceous tinge, the 

 under surface and legs bright brownish-red; head two-fifths as wide 



