Platynin/E 59 



dently punctate; elytra three-fifths longer than wide, the sides 

 rapidly rounded at the humeri, evenly and not obtusely rounded 

 posteriorly, the sinus short and very feeble; striae fine, sharply 

 marked, feebly micro-punctulate; intervals not quite flat, the third 

 with five distinct punctures; met-episterna between two and th^ee 

 times as long as wide; tarsi very slender, the posterior with the 

 external groove very broad and shallow. Length (9) 8.0 mm.; 

 width 3.0 mm. Florida (Indian River Haulover), — Schwarz. 



gravidulus n. sp. 



Prothorax very nearly as small as in gravidulus, the habitat similar. 

 Body much smaller and narrower than in floridanus, narrower and 

 less convex than in gravidulus, deep black, polished throughout in 

 the male, the anterior parts with obscure greenish lustre; legs 

 piceous; head three-fourths as wide as the prothorax, barely longer 

 than wide, the eyes well developed and notably prominent; an- 

 tennae slender, black, the basal joint picescent, the third three- 

 fourths as long as the fourth; prothorax a sixth wider than long, 

 widest well before the middle, the sides broadly, subevenly rounded, 

 straighter and unusually oblique basally, finely reflexed, a little 

 more so at the very obtuse basal angles, which have the tips finely 

 and bluntly subprominent; surface flatter and with more numerous 

 transverse rugulae than in gravidulus, the foveae smaller, less deep, 

 linearly deeper internally, very finely, obsoletely punctulate; elytra 

 narrower, more depressed, more parallel and with less arcuate sides, 

 three-fifths longer than wide, very slightly less than twice as wide 

 as the prothorax, the striae rather fine, feebly impressed and dis- 

 tinctly micro-punctulate; intervals feebly convex, the third with 

 about five distinct punctures; anterior male tarsi very narrowly 

 dilated. Length (cf ) 7.75 mm.; width 2.8 mm. Florida (Marion 

 Co.) collisus n. sp. 



Prothorax larger, always obviously more than half as wide as the elytra; 

 coloration not or but slightly metallic. Pacific regions 10 



10 — Elytra rapidly obtuse at apex and with very fine striae and perfectly 

 flat intervals in the female. Shining, black, the anterior parts 

 faintly greenish, the elytra obsoletely purpurate; under surface 

 black, the legs black, the femora testaceous except apically; head 

 evidently narrower than the prothorax, rather elongate, with well 

 developed and moderately prominent eyes; front with two im- 

 pressed foveae between the eyes, the anterior impressions outwardly 

 oblique behind; palpi slender, blackish; antennae slender, fully 

 half as long as the body, black, the testaceous basal joint clouded 

 with black above, the third joint much shorter than the fourth; 

 prothorax a fifth wider than long, with distinctly rounded and 

 finely reflexed sides; base as wide as the moderately sinuate apex, 

 strongly arcuate laterally; surface nearly smooth, becoming trans- 

 versely, then irregularly, rugose toward the base, the impressions 

 obsolescent; stria fine; foveae sharply linear, very deeply impressed, 

 not definitely punctate, not much prolonged; elytra three-fifths 

 longer than wide, four-fifths wider than the prothorax, parallel, 

 with feebly arcuate sides rapidly rounding basally, the sinus distinct; 



