11. CEREALCES. 14. SYZYGONIA. 31 



sion ; abdomen much narrower than the thorax, about as long as the 

 head and thorax together, and rounded off at the extremity. 



Fore wings with one marginal, appendiculate cell, and four sub- 

 marginal cells, gradually increasing in size, the second and third 

 each receiving a recurrent nervure ; no lanceolate cell : hind wings 

 with one middle cell. 



Tibiae with two end spurs of moderate length, and the four hind 

 tibiae with middle spurs. Hind coxae rather large ; hind femora 

 swollen and rather flattened. 



Very distinct from Perga, with which, however, it agrees in 

 neuration and in the structure of the legs. 



1. Cerealces scutellata. 

 (Plate II. fig. 15.) 

 Exp. al. 7 lin., long. corp. 4 lin. 



Black ; head, thorax, and pectus thickly punctured ; antennae, jaws, 

 and scutellum reddish, the cleft in the last black ; labrum, cheeks, 

 scapulae, second and two last segments of the abdomen yellowish 

 above, the intermediate segments shading into reddish in the middle, 

 the segments slightly edged with yellowish below. Legs rufous ; 

 intermediate and hind coxae pale yellowish, the latter black at base. 



Hah. South Australia. 

 a. <J . (Type of species.) S.Australia. Purchased. 



12. THULEA. 



Thulea, Say, Bost. Journ. i. p. 213 (1836). 



1. Thulea nigra. 



Thulea nigra, Say, Bost. Journ. i. p. 213 (1836). 

 Hob. Mexico. 



13. ACQRDULECEBA. 



Acordulecera, Say, Bost. Journ. i. p. 209 (1836). 



1. Acordulecera dorsalis. 



Acordulecera dorsalis, Say, Bost. Journ. i. p. 210 (1836). 



Hah. Indiana. 



14. SYZYGONIA. 



Syzygonia, Klug, Ent. Monogr. p. 177 (1824) ; St.-Farg. Ann. Soc. 

 Ent. Fr. ii. p. 456 (1853). 



1. Syzygonia cyanoptera. 



Syzygonia cyanoptera, Klug, Ent. Monogr. p. 179 (1824) ; Perty, 

 Del. Anim. Art. p. 130, pi. xxvi. fig. 4 (1830-34) ; St.-Farg. Ann. 

 Soc. Ent. Fr. ii. pi. xvi. B (1833). 



Hah. Brazil. 



