GRTLLID-E. 7 



a. Adelaide. From Mr. Argent's collection. 



6. Swan River. Presented by Sir J. Richardson. 



f. Swan River. From Dr. Bacon's collection. 



bb. Hind tarsi flat, digitate. 

 c. Four anterior tarsi 3-jointed. 



Genus 3. TRIDACTYLUS. 



Tridaclylus, Oliv. Latr. Gen. Cr. et Ins. 1807. Blanch. Hist. Nat. iii. 34. 

 Serv. Hist. Or/A. 311. Acheta, Coqueb. Heteropus, Pal. de Beauv. 

 Ins. 230. Xya, Illigcr, MSS. Latr. Gen. iv. 1809. Burm. Handb. 

 Ent. ii. 741. Fisch. Orth. Eur. 152. 



1. TRIDACTYLUS VARIEGATUS. 



Tridactylus variegatus, Latr. Hist. Nat. Ins. xii. 119; Gen. iv. 385. Nouv. 

 Diet. Hist. Nat. edit. 2. Gen. Cr. et Ins. iii. 97. Descr. Egypte, Orth. 

 pi. 3, f. 1. Blanch. Hist. Nat. iii. 34. Serv. Hist. Orth. 315. Brultt, 

 Hist. Nat. Ins. ix. 197, pi. 18, f. 6. Foudras. Observ. Trid. Pan. 1829. 

 Leon. Duf. Ann. Sci. Nat. Zool. ix. 321. Xya variegata, Charp. 

 Hor. Ent. ii. 741. Sav. Descr. Egypte, pi. 3, f. 1. Burm. Handb. Ent. 

 ii. 742. Fisch. do Waldh. Orth. Ross. 117, pi. 3, f. 3.- Ramb. Faune, 

 Ent. And. ii. 27. Fisch. Orth. Eur. 154, pi. 9, f. 2. Doy, Atlas, 

 Regn. An. Cuv. pi. 81, f. 2. Kittary, Bull. Soc. Imp. Mosc. xxii. 450, 

 pi. 7, f. 10, 11; 1416. 



Algeria. 



a. S. Europe. Presented by Dr. Leach. 



6, c. S. Germany. Presented by Dr. Burmeister. 



d. S. Europe. From Prof. Westwood's collection. 



e g. Italy. Presented by A. H. Haliday, Esq. 



2. TRIDACTYLUS APICALIS. 



Tridactylus apicalis, Say, Journ. Acad. Nat. Sci. Phil. iv. 310, f. 1 ; Ent. 

 N. Amer. ed. Le Conte, ii. 239. Scudder, Journ. Boston Soc. Nat. 

 Hist. vii. 425. Xya apicalis, Burm. Handb. Ent. ii. 741. 



Alabama. Kentucky. 



3. TRIDACTYLUS TERMINALIS. 



Tridactylus terminalis, Uhler, MSS. Scudder, Journ. Boston Soc. Nat. 

 Hist. vii. 425. 



Illinois. Massachusetts. Maryland. 



4. TRIDACTYLUS MINUTUS. 



Tridactylus minutus, Scudder, Journ. Boston Soc. Nat. Hist. vii. 425. 

 Illinois. 



5. TRIDACTYLUS AFRICANUS. 



Heteropus africanus, Pal. Beauv. Ins. 230; Orth. pi. 2, f. 7. Tridactylus 

 paradoxus, Latr. Hist. Cr. et Ins. xii. 120; Gen. iii. 97. Dumeril, 



