KELLICOTT. 55 



point yellow; sides yellow with a black, interrupted 

 band; face yellow; anal appendages yellow, as long as 

 10. 



VII. Pterostigma long; front indented, front of 

 thorax brown with two isolated, narrow, straight 

 lines, a vestige of a humeral and a mesothoracic semi- 

 collar interrupted in the middle all yellowish green ; 

 abdomen long, slightly dilated posteriorly. 



Our species are distributed in these groups as 

 follows : 



II. dilatatus and vastus, 



III. quadricolor, fraternus, ' externus and 

 graslinellus, 



IV. villosipes, furcifer, exilis, lividus and spicatus, 



VI. spiniceps and plagiatus, 



VII. notatus. 



The species may be separated with little difficulty 

 by the following characters. 



II. 



1. Large, male abdomen 50 mm; face yellow with two narrow 

 transverse black bands dilatatus. 



2. Medium, male abdomen 38 mm.; face yellow with two broad 

 transverse black bands vastus. 



III. 



1. Dorsum of 9-10 black (1) and (2). 



2. Dorsum of 9-10 with a yellow band (3) and (4). 



(1). Small, male abdomen 32 mm.; no yellow on dorsum of 8, 



quadricolor. 

 (2). Medium, male abdomen 38 mm.; yellow triangle on dorsum of 



8 (sometimes a faint yellow band on 9 fraternus. 



(3). Medium, superior abdominal appendages of the male slender, 



obliquely truncated and excavated at apical fourth externus. 



(4). Medium, male superior appendages stouter, obliquely truncated 



with a prominent tooth at outer angle graslinellus. 



IV. 



1. Medium size, male abdomen 35 mm.; antehumeral stripes 



slightly divergent below. 

 (1). Superior male appendages yellow, truncate with inwardly 

 directed spine at the inner distal angle. 



