216 DESCRIPTIONS OF NEW SPECIES. 



* Antennae feebly serrate ; 5th ventral flattened, broadly 

 truncato-eraarginate, and bidentate ; mouth short, hind 

 angles of head more prominent; 

 Black, velvety pubescent, elytra red with the apex black ; 



Elytra not sulcate ; prothorax sparsely punctured. 1. EMARGINATA. 

 Elytra sulcate ; prothorax densely punctured. 2. GIGAS n. sp. 



** Antennae filiform ; 5th ventral broadly truncato-emargiuate 

 and bidentate ; mouth long, hind angles of head 

 less prominent ; 



1. Prothorax densely not finely punctured ; 



Elytra yellow, with anterior blotch (frequently wanting), medial band and 

 apex black ; feet varied black and yellow ; sides and base of prothorax 

 sometimes yellow, antennae usually annulated; 

 Antennae long and slender: , tip of elytra ferruginous, obliterata Hald. : 



0, tip of elytra black, vitiosa Lee. 3. OBLITERATA. 



Antennae stouter, not annulated, elytra with middle and posterior baud 



black. 4. SOROR n. sp. 



Elytra yellow, more obliquely truncate at tip, lateral spot near the middle, 

 suture behind, and apex black ; legs, antennae, and body black.* 



5. PROPINQUA. 



Elytra yellow, with vague medial and posterior bands interrupted at the 

 suture, sides of prothorax, abdomen, and legs testaceous ; tarsi, tip of 

 posterior tibiae and hind femora fuscous ; narrower than obliterala with 

 the antennae longer, and llth joint very distinctly appendiculate, 

 and prothorax more sinuate on the sides. 6. DELETA. 



2. Prothorax more finely punctured ; 

 Black, elytra luteo-testaceous, tip blackish ; 3d, 4th, and base of 5th 



ventral segments red ; , elytra black. 7. PLEBEJA. 



More slender, antennae annulate with yellow ; black, base of legs 

 yellow ; elytra with base of epipleurae yellow ; and broad vitta dilated at 

 base interrupted at the middle, and abbreviated at two-thirds the length ; 

 subhamata Randall, interrupta Newm., armata Hald. ; J testaceous, disk 

 of prothorax, scutellum, suture, side margin, transverse spot at middle 

 of elytra, and tip black ; legs varied with black ; varies with the pro- 

 thorax marked only with a narrow black vitta, elegans Lee. 



8. SUBHAMATA. 



3. Prothorax strongly less densely punctured; 



Much broader and stouter, hind impression of prothorax very deep, abdo- 

 men red, base and tip blackish: $ black, abdomen red, abdominalis 

 Hald. ; $> yellow, occiput, two prothoracic spots, knees, tips of tibiae, 

 and tarsi black, elytra with side margin and oblique vitta yellow, atro- 

 vittata Bland ; varies with the trunk fuscous, and prothorax with the 

 disk black. 9. ABDOMINALIS. 



Broad, black, prothorax deeply impressed behind, elytra sanguineous, 

 with a very broad common discoidal stripe not reaching the base, abdo- 

 men sanguineous. 10. PLAGIFBRA n. sp. 



