224 ACADEMY OF NATURAL SCIENCES 



rather behind the middle : elytra irregularly punctured ; three 

 or four obsolete, elevated lines, of which the exterior one is 

 largest, and colored by a brown fillet which does not attain the 

 tip : a brown common sutural line. 



Var. a. Destitute of the fillet and sutural line. 



Length less than one-fifth of an inch. 



I obtained specimens near the Rocky Mountains. The length 

 of the antennae in some specimens would authorize the placing 

 of it in the genus Luperus, whilst the abbreviation of the third 

 and fourth joints resembles those of the genus Adimonia [461] 

 of Schrank. This insect varies in being more robust, with the 

 antennae shorter than the body, and the elytra, at first view, are 

 entirely olive-green ; but on inspection, vestiges of the fillet and 

 sutural line sometimes are visible near the base. It is very simi- 

 lar to Criaceris vittata of Fab. 



[Belongs to Phyllohrotica. — Leg.] 



11. G. Atripennis. — Black; thorax rufous, with two im- 

 pressed spots ; venter pale yellowish-rufous. 



Inhabits Missouri. 



Black, impunctured : head, an indented, frontal spot, and a 

 carinate line between the antennae : thorax pale rufous ; two di- 

 lated, indented spots : elytra irregularly and conflueutly punc- 

 tured ; an elevated line from the humerus, parallel with the edge : 

 pectus and venter pale rufous. 



Length nearly one-fifth of an inch. 



The second and third joints of the antennae are abbreviated 

 and equal, as in the preceding species. 



[A species of PhyUohrotica, unknown to me, but closely allied 

 to G. (^Adimonia) cristata Harris, Trans. Hartford Nat. Hist. 

 Soc, 90, which differs chiefly by the thorax having a wide black 

 vitta, and by the body being black. — Leg.] 



12. Gr. atriventris. — Pale rufous; antennae, elytra, and ab- 

 domen, black. 



Inhabits Missouri. 



Body pale rufous : eyes black : antennae ten-jointed, black : 

 thorax with a dilated, black margin; interrupted before the scu- 

 tel : scutel pale rufous : elytra black, glabrous, immaculate : wings 

 black : feet, line above the femora, tibia and tarsi black : abdo- 

 men deep black. 



[Vol. III. 



