306 PROCEEDINGS OF THE ACADEMY OF 



Dorsal punctures 3 ; (hind tibire of % usually hairy on inner side) ; 



Dysidius Chaud. H. 



Dorsal foveae 5-6; Platysma. I. 



A. 



(Prothorax finely margined ; two joints of hind and middle tarsi grooved 

 on outer side : last ventral % with a short high carina acute at tip). 



Prothorax with linear basal impressions, narrowed behind, hind angles 

 rectangular, elytral stria very fine, scutellar long, but not well de- 

 fined. 30. lubricus Lee. 



B. 



(Prothorax finely margined ; tarsi not grooved on the outer side ; protho- 

 rax much rounded on the sides, with short narrow basal impressions ; 

 sides of abdomen punctured:) 

 Hind angles of prothorax obtuse not rounded, stria; of elytra punctured, 



form stouter. 31. tumescem Lee. 



Hind angles of prothorax obtuse and rounded, form less stout : 



Elytral strife not punctured. 32. obscurus Say. 



Elytral striae punctured ; cycloderus Chaud. 33. ventralis Saj'. 



C. 



(Prothorax strongly margined ; two or three joints of posterior tarsi 

 grooved on the outer side :) 



a. Dorsal punctures 2 : 



Basal fovea of prothorax linear, deep. 34. lachrymosus Xm. 



Basal fovete large : 

 Hind angles carinate : more or less rounded ; 

 Fovete without tubercle, mar ens Newm., adjunctus Lee, flebilis Lee. 



35. coracimis Xewm. 

 Fovese with tubercle ; bisigillatus Harris, rugicolUs Hald. 



36. stygicus Say.' 

 Hind angles not carinate, foveae without tubercle ; protensus Lec.^ 



37. relict us Newm. 



b. Dorsal punctures 4, hind angles of prothorax broadly rounded, basal 

 foveae large and deep ; 



Hind angles carinate, color purple, shining. 38. sxiperciliosus Say. 



Hind angles not carinate, color dull, nearly black. 39. moestns Say. 



c. Alternate interspaces interrupted by irregular lines and punctures. 



40. punctatissimus Band. 



1 



' Tlie type of F. picipes Newm. in the British Museum belongs to tliis 

 species, but the description does not agree, and seems to refer rather to 

 Picsmus submarginatus ; there seems to have been some confusion of 

 labels. 



2 The type of F. rclicta Newn. in the British iMuseum l)elongs to this 

 species ; the description mentions six elytral punctures, three on each, an 

 anomaly which exists in fact iu the specimen. 



