352 MEMOIRS OF THE CARNEGIE MUSEUM 



TiUEE II. OpheUnini. 



The much shorter liiiid til)i;il spurs separate this tribe from the Euphctrim. 

 The pronotum is also different, moi-e rounded anteriorly, and the hind c()x;t? are not 

 so much swollen. 



It is difficult sometimes to tell whether or not the abdomen is petiolate or ses- 

 sile, and in two or three cases I have been compelled to j^ut certain genera in both 

 categories, the petiole being so short as to give the abdomen tlie apjiearaiice of being 

 sessile. 



TABLE OF GENERA. 



1. Females 2 



Males 14 



2. Abdomen distinctly petiolate 3 



Abdomen sessile or subsessile 11 



3. Scutellum with tivo dorsal grooved lines 4 



Scutellum without dorsal grooved lines 9 



4. Body metallic 5 



Body not metallic 10 



5. Eyes bare, not pubescent 8 



Eyes pubescent ; antennae 9-jointed G 



6. Abdomen ovate or oblong-oval, shorter than the thorax 7 



Abdomen conic-ovate, not shorter than the thorax, the second segment large ; funicle 4-jointed, the 



joints cylindrical, longer than thick ; metathorax produced into a subglobose neck. 

 Scutellum with a median grooved line ; me.sothoracic furrows distinct. 



Diglyphomorpha Ashmead, g. nov. (type Diglyphvs maculipennis Ashm.). 

 Scutellum without a median grooved line ; mesothoracic furrows very delicate although complete, 



appearing incomplete without the aid of a strong leus Ardalus Howard 



(type A. aciculaius How.). 



7. Antennai 9-jointed, the fuuicle 4-jointed, subcompressed, joints 3-4 wider than long ; scutellum without 



grooved lines ; . .Leucodesmia Howard (type L. typica Howard). 



AutenuiE 10-jointed, the funicle joints longer than wide. 



Scutellum with 2 dorsal grooved lines Elachertomorpha Ashmead, g. nov. 



(type E. flaviecps Ashm.). 



8. Antenna; 10-joiuted, the funicle 4 jointed, the joints loosely joined ; abdomen globose, the petiole long, 



slender ; scutellum with two grooved lines Stenomesius Westwood. 



Antennse 10-jointed, with one ring-joint 10 * 



9. Antennae 9-jointed with two ring-joints 10 



Antennse 9-jointed, with one ring-joint ; the flinicle 4-jointed, eyes pubescent ; funicle joiuts compressed, 



joints 3-4 wider than long ; abdomen oval or ovate, shorter than the thorax Leucodesmia Howard 



(type L. typica How.). 

 10. Aiitenme 9-jointed. 



Pronotum campanulate ; pedicel long, obconic. Miotropis Thomson (type M. siilcicris Thorns.). 



Pronotum quadrate ; pedicel not long Dichotomus Forster (type D. accriinis Forst.). 



10*. Body of abdomen ovate as long or longer than the thorax, the petiole very short. 



Sympiesomorpha Ashmead. g. nov. (type S. hrdsiliensis Ashm.). 



