40 TENTHEEDINID^!. 



cheeks, antennae, tibiae, tarsi, and extreme apex of the abdomen 

 luteous. Wings clear hyaline, iridescent ; stigma brown. 



Hah. West Australia. 

 a, b. $ 2 ■ (Typ es of species.) Swan Kiver. Mr. Du Boulay. 



5. Trichorhachus abdominalis. 

 (Plate III. fig. 5.) 



Exp. al. 6 lin., long. corp. 3 lin. 



Shining black, basal two thirds of the abdomen beneath reddish 

 brown ; tibiae and tarsi testaceous, face yellowish ; hind tibiae black 

 at the extremity, and hind tarsi ringed with black. Wings clear 

 hyaline, iridescent, with black nervures and stigma. 



Hah. West Australia. 



a. $ . (Type of species.) Swan River. Mr. Du Boulay. 



22. ATOMACERA. 



Atomacera, Say, Bost. Journ. i. p. 212 (1835). 



1. Atomacera debilis. 



Atomacera debilis, Say, Bost. Journ. i. p. 212, n. 1 (1835). 

 Hob. Indiana. 



2. Atomacera cellularis. 



Atomacera cellular^, Say, Bost. Journ. i. p. 213, n. 2 (1835). 

 Hah. Indiana. 



3. Atomacera ruficollis. 



Atomacera ruficollis, Norton, Proc. Ent. Soc. Phil. iii. p. 6 (1864). 



Hab. Georgia. 



a. 2 • Georgia. Probably from Abbot's 



collection. 



23. SCOBINA. 



Scobina, St.-Farg. $ Serv. Enc. Mtth. x. p. 574 (1825). 



1. Scobina hyaloptera. 



Schizocera hyaloptera, Perty, Del. Anim. Art. p. 130, pi. xxvi. fig. 6 

 (1830-34). 



Hab. Amazons. 



