GRYLLID^E. I 



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



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

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



bb. Hind tarsi flat, digitate. 

 c. Four anterior tarsi 3-jointed. 



Genus 3. TRIDACTYLUS. 



Tridactylus, Oliv. Lair. Gen. Cr. el Ins. 1807. Blanch. Hist. Nat. iii. 34. 

 Sen. Hist. Orth. 311. — Acbeta, Coqueb. — Heteropus, Pal. de Beauv. 

 Ins. 230.— Xya, Illiger, MSS. Latr. Gen. iv. 1S09. Burm. Handb. 

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



I. TEIDACTVI.US VARIEGATU8. 



Tridactylus rariegatus, Lair. Hist. Nat. Ins. xii. 119; Gen. iv. 385. Nouv. 

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

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

 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. Egi/pte, pi. 3, f. 1. Burm. Handb. Ent. 

 ii. 742. Fisch. de 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; 14—16. 



Algeria. 



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



b, 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. Nal. 

 Hist. vii. 425. 



Illinois. Massachusetts. Maryland. 



4. Tridactylus minutus. 

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

 Illinois. 



5. TniDACTYLCS AFRICANCS. 



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

 paradoxus, Latr. Hist. Cr. el Ins. xii. 120: Gen. iii. 97. Dumeril, 



