538 TRANSACTIONS OF THE 



impressed ; base a little emarginate, not wider than the abdomi- 

 nal petiole ; elytra with punctured, not deeply impressed striae, 

 obsolete at tip and on each side ; marginal ocellate punctures 

 about seventeen, in a continuous series rather sparse in the mid- 

 dle : near the tip very slightly sinuated ; third interstitial space 

 with a puncture [425] near the middle of the second stria. 



Length two-fifths of an inch. 



Closely allied to *S'. llligcri Panz., but the thorax of that spe- 

 cies is not so narrow at base, and its clytral striae are not obsolete 

 at tip, and not even decidedly so on the sides. It is excedingly 

 like S. ventralis N., but it is more robust, and the sides of the 

 elytra are more arquated. 



The characters of this species agree very well with the descrip- 

 tion of teiiebricosa Dej., excepting that the elytra are not "assez 

 fortement sinuses posterieurement." 



3. F. OBSCURA. — Black ; tibiae and tarsi dark rufous ; elytral 

 striae obsolete on each side. 



Inhabits Indiana. 



Body black ; labrum and base of mandibles tinged with rufous ; 

 palpi dull honey-yellow ; antennaj blackish ferruginous ; front 

 with two indented lines ; head impunctured ; thorax not so nar- 

 row at base as the petiole ; dorsal line acute, not deeply im- 

 pressed; basal lines well indented, definite, impunctured, not or- 

 bicular, viewed in any direction, very slightly arquated ; elytra 

 striate ; the striae not distinctly punctured, obsolete on the lateral 

 submargin, and not so obvious at tip as on the disk j marginal 

 ocellated punctures about seventeen ; near the tip rather slightly 

 sinuate ; third interstitial tripunctured, the two anterior punc- 

 tures at the third stria. 



Length less than nine-twentieths of an inch. 



Resembles the preceding, but the thorax at base is wider, and 

 the body is longer. In the proportion of the base of the thorax 

 it corresponds with F. llligcri Panz., but aside from color, it may 

 be distinguished from the obsolete lateral striae, the much less 

 dilated thoracic basal lines, &c. 



[Vol. IV 



