19 

 SYNOPTIC TABLE OF GOLEOPTERA 



Loxandrus, Lee. 



Black species, elytra, with iridescent reflections ; mandibles not 

 striate, mentum-tooth emarginate, ligula not carinate, front tarsi of 

 $ obliquely dilated. Dr. Leconte gives a synopsis in "Proc. Am. 

 PML. Soc.," XVII, p. 375, as follows : 



A. Side margin of prothorax explanate and reflexed toward the 

 hind angles, which are entirely rounded into the base and sides ; 

 antennae and palpi rufo-piceous; legs dark. (Species large and mid- 

 dle sized.) 



B. Side margin of prothorax not explanate toward the hind 

 angles, which are not rectangular. (Species large and small.) 



C. ^i^ e margin of thorax not explanate toward the hind angles, 

 which are rectangular. (Species small.) 



A. 



Large species (length, 13 - 3-10 mm.) ...... 2. 



Smaller species (length, 10-7 "8 mm.) with hind angles of protho- 

 rax less broadly rounded. ....... 3. 



2. Side margin of prothorax broader and more distinctly reflexed 



toward the base ; elytra with more finely punctulate striae ; 

 iridescent reflections more brilliant. ... 1. reflexus. 

 Side margin of prothorax less definitely limited toward the base ; 

 elytra with less finely punctured striae; reflections very bright. 



2. saphmi/rms. 



3. Prothorax regularly narrowed from base to tip, sides feebly 



explanate toward the base. . . . . .3. cahthinus. 



Prothorax but slightly narrowed in front; sides more distinctly 

 explanate toward the base. . . . . .4. Jloridanus. 



B. 



Larger species (length, 13-9*3 mm.). . . . . .2. 



Small species (length, 7 - 7-5 - S mm.). . . . . .4. 



2. Legs dark. .......... 3. 



Legs ferruginous ; prothorax wider than long ; hind angles, 

 obtuse, blunt, or rounded at tip. .... 5. rectus. 



3. Prothorax wider than long ; hind angles slightly obtuse, not 



at all rounded. ....... (i. brevicollis. 



Prothorax very slightly wider than long; hind angles rounded 

 at the extreme tip. ....... 7. mi nor. 



Prothorax not wider than long ; hind angles not rounded. 



P. crrtilirus. 



