40 TENTHREDIMmffl. 



cheeks, antenna, tibite, tarsi, and extreme apex of the abdomen 

 luteous. Wings clear hyaline, iridescent ; stigma brown. 



Hab. "West Australia. 



a,b. S 2 • (Types of species.) Swan River. 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 Mark. Wings clear 

 hyaline, iridescent, with black nervines and stigma. 



Bab. West Australia. 



a. tf . (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 i 1 •- ■ 

 Hab. Indiana. 



2. Atomacera cellularis. 



Atomacera cellulario, Say, Bost. Journ. i. p. 213, n. 2 i 1835). 



Hab. Indiana. 



3. Atomacera ruiicollis. 



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

 Hab. Georgia. 



a. §. Georgia. Probably from Abbot's 



collection. 



23. SCOBINA. 

 Scobina, Sl.-Farg. § Serv. Enc. Mith. x. p. 574 ( I v 



1. Scobina hyaloptera. 



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

 (1830-34)'. 



Huh. Amazons. 



