junei8 99 .] Casey: On American Coccinellid^. 155 



Elytra black, each with two sharply defined oval spots, or a design formed by an 

 amalgamation of such spots 73 



Elytra black or piceous, with irregular paler design or maculation 75 



Elytra pale, or sometimes pale with the suture or margins dusky 77 



72 — Prothorax entirely testaceous, each elytron with a very large circular red spot just 

 behind the middle, the apex not paler ; pubescence rather coarse, cinereous 

 and conspicuous, the punctures very fine and not very dense ; legs flavo-testaceous, 

 Length 1.25 mm.; width 0.85 mm. Florida (Dry Tortugas) . . bivulnerus Horn 



Prothorax entirely black, the head red or black ; legs testaceous, the femora black, 

 especially the posterior ; elytra each with a smaller spot near apical third ; body 

 moderately large and stout, the sides of the prothorax nearly continuous with 

 those of the elytra ; elytral punctures rather small, the pubescence coarse, rather 

 abundant and conspicuous. Length 1.9 mm ; width 1.3. Pennsylvania. 



flavifrons Mehk: 

 Var. A — Much smaller and generally somewhat more narrowly oval, the 

 elytral punctures relatively rather larger, the pubescence not quite so con- 

 spicuous. Length 1.4-1.6 mm.; width 0.95-I.1 mm. Pennsylvania, New 

 Jersey, Delaware and Georgia bioculatus J/u/s. 



73 — Spots of the elytra narrowly but clearly separated, oval. Length 2.0 mm.; 

 width 1.2 mm. Lake Superior omatUS Lee. 



Spots of the elytra broadly coalescent, forming an elongate, bilaterally sinuate discal 

 maculation 74 



74 — Larger species and more broadly oval, the abdomen strongly and rather closely 

 punctured at the sides of the first segment, the epipleurse scarcely attaining the 

 middle of the side-margin of the second segment, the arrangement of the punc- 

 tures at the sides of the first segment indicating derivation from a form having 

 complete ventral plates, with the bounding line bending abruptly to the front 

 very near them argin ; prothorax black throughout, minutely and rather closely 

 punctate, the sides not quite continuous with those of the elytra, strongly con- 

 vergent, evenly and strongly arcuate ; elytra much longer than wide, rather 

 strongly rounded at apex, finely but deeply, moderately closely and somewhat ir- 

 regularly punctate; legs red, the femora blackish. Length 2. 1 5 mm.; width 

 1.35 mm. Massachusetts sanguinifer, sp. nov. 



Small and narrowly oval but similar to the preceding in form, the abdomen finely and 

 sparsely punctate over the post-coxal areas, the lines curved forward at their ex- 

 treme limit but not much prolonged, the epipleune attaining the apex of the 

 second segment, black, the elytral spot less defined than in sanguinifer ; the 

 punctures rather sparser and the apex more narrowly rounded. Length 1. 65 

 mm. ; width 0.8-0.9 mm. Colorado ( Rocky Mts. ) naviculatus, sp. nov. 



75 — Black throughout, broadly oval, the legs piceous, each elytron with two trans- 

 verse discal spots which are almost, or completely, divided each into two very 

 small pale spots, the outer of which are the more linear and oblique ; punctures 

 fine and very close-set, the pubescence rather coarse, cinereous and conspicuous 

 but easily denuded. Length 1.8 mm.; width 1.2 mm. California. 



gUttuIatUS Lee. 



Piceous-black, narrowly oval, the legs dark testaceous throughout, each elytron with a 

 transverse reniform pale spot just behind apical third, and also paler toward the 



