206 



THE AMERICAN 



A METHODICAL TABLE OP THE CRICKETS. 



Dear Sir: I send you a Tableau Methodique 

 of the Ci-ickets (Gri/Uidoi) , which I have made 

 np from Walker's Catalogue of this family — a 

 work Just issued, and which embi-aces not only 

 the specimens in the British Museum, but all 

 the species described up to the time of its issue. 

 I have also added a list of the North American 

 species of this family, not included in Mr. Scud- 

 der's Catalogue. C. Thomas. 



Washington, D C, iTarohli, 1870. 



OKDEK, ORTHOPTERA. 

 .Sect. 2, Saltatoeia. 

 a,— Fore wings horizoutal in reijose. Gkyllid^. 



aa. — Fore wiug'S deflexed iu repose. 

 h. — Autenn^ long, setaceous; tarsi 



•i-joint.cd. Locu«Tii),ii. 



T>!>, — Antenna; liliform, generally rather 



sliort. AcKiDiDJj. 



Fam. 1 — Gryllid^. 

 G-n/lUdes, Latr.; &ryllma, Macleay; Aehetidce, Leaeli; 

 Gryllodea, Burm.; Achetina, Newnn. 

 ^.— Fore legs fossorial. 



b. Hind tarsi of tlie usual form. 



c. Tarsi S-joinfetl. 



d. Fore tibia hexadactylate . Gryllotalpa, Latv. 

 dd. Fore tibia didactylatc. Scapteriscus, Scuild. 

 oc. Tarsi a-jointed. ' Uyiindrodes, Gmy . 

 bb. Hind tarsi Hat, digitate. 



(1. Four anterior tarsi .S-joiuted. *'J'ridaotylus, Oliv. 

 CO. Four anterior tarsi 2-jointed. * Hkipiptenjx, Newm. 

 -4-4.— Fore legs not fossorial. 



b. Head concealed. ^MyrmecopMla, Latr. 

 bb. Head prominent. 



c. Face rounded. 



A. Hind tibi;e wiOi spines. 



e. Four anterior legs short, or but moderately long. 

 Jt. Third joint of the palpi not distinctly truncated. 

 S- Fore wings not \-ery long. 



li. Prothorax not very narrow. 



i. Hind legs .stout, ot moderate length. 



J . Hind tibi;c with stout approximate spines. 



U. Tarsi 4-jointed. Acheta, Fabr. 



lifc. Tarsi 3-jointed. 



I. First joint of the hind tarsi setulose. 



JSrachytnjjpes, Serv. 



II. First joint of the liiiid tarsi .smooth. 

 OT. Head not ridged. 



n. Head not conical in front. 



0. Oviduct very narrow. '■'Gri/Uus, \An\\. 



00. Oviduct flattened. Platyxyphus, Kaan. 



mi. Head conical in front. *Mogoplistes, Serv. 



mm. Head ridged between the eyes. 



n. Hind tarsi not serrated . 



0. Fore wings regularly reticulated. » Tafalisoa, Walk. 



00. Fore wings Irregularly reticulated. 



p. Hind tibiiB not serrated. Cassidam, Walk. 



pp. Hind tibiai serrated. Mssa, Walk. 



.iJ. Hind tibiic with slender, wide-apart spiu-s. 

 k. Fore wings generally abbreviated. 



1. Legs not very hairy. 



m. Spines of the hind tibiie not very long. 



^JVemoMus, Ser^'. 



iii.m. Hind tibiiE with very long spines. Argizala,Wulk. 



n. Legs very hairy. *napithus. Uhler. 



kh. Fore wings complete. 



I. Fore wings membraneous. 



m. Fore wings of the males not very broad. 



n. Fore wings with transverse veins. 



0. Prothorax not Ijroader than the head. 



p. Head not prominent Ijetween the eves. 



q. Fore wings with veins beyond the' tvmpanum ir- 

 regular. ''Orocharis. LThler. 



qq. Fore wings with veins beyond the tympanum 

 regular. Itara, Walk, 



pp. Head prominent between the eyes. 



Madasumma. Walk. 

 00. Prothorax much broader than the head. 



Loheda. Walk . 

 nn. Fore wings of the male very broatl. 



0. Legs not \ery slender. " * Eneoptera, Burm. 

 no. Legs very slender. ''Phylloyulpus, Uhler. 

 mm. Fore wings of the male very broad. 



n. Prothorax not narrower in froiit. Emepa,'Sf-i\\'i. 



nn. Prothorax much narrower in ( Lerneca, Walk. 



front. ( Halmonia, Walk. 



II. Fore wings coriaceous. 



III. Fore win.gs not reticulated. Scleroptems., H;ig. 

 mm. Fore wiiigs reticulated. "'Lulyussu, Walk. 

 ii. Hind legs very long. 



/. Fore femora aiid fore tibiaj not spiny. 

 Tc. Eyes not very prominent. 



1. Second joint of the hind tarsi very distinct. 



Podoscirtus^ iSciuUl. 

 II. Second joint of the hind tarsi hardly apparent. 

 m. Wings complete. * Platydaotylus , ^ruWi. 



mm. Wings none. 



n. Spines of the hindtibia> very short. Larttnda,Wi\.\k. 

 nn. .Spines of the hind tibia; long. *&(/to. Walk. 



kk. Eyes very prominent. 



I. Legs stout. , OrScja, Walk. 



U. Legs slender. h'Uitra, Walk. 



j. (Not represented.) 

 bh. Prothorax very long and narrow. 

 i. Head elongated. ' '■*(Ecanthus,?>v\\. 



ii. Head not elongated. *Laurepa, Walk. 



gg. Fore wings extremely long. 



h. Body stout. " Tarraga, Walk. 



U,. Body \ery slender. Nocera. Walk. 



ft. Third joint of the maxillary palpi 



directly truncated. Tiigonidium, Ramb. 



ee. Four anterior legs very long. 

 /. Hind femora not abruptly attenuated. 



Lusara, Walk. 

 ff. Hind femora abruptly attenuated 



beyond the middle.' .*Phalangopsis, Sew. 



dd. Hind tilnse without lateral spines. 

 e. Prothorax produced hindward. * Cyeloptilum. Scud. 

 ee. Prothorax not produced hindward. 

 /. Botly stout. Omebius^ Guer. 



ff. Body \ei'y slender Xabea. 'Walk . 



cc. Face very flat. PlatyMemmiis.^cw. 



a list of species of gryllid^ not includkd in 

 scuddek's catalogue op okthopteua. 



Gi'yllu.s septentrionalis , Walk. pg. 18. Mexico, St. Dom. 

 ' ' luridus , " 18 . 'Vera Cruz . 



" determinatus , " 19. .Jamaica. 



' ' similaris^ , " 20 . .St . Domingo . 



" angugtulus, " " 21. Jamaica. 



'• contingens, " 21. Jamaica. 



" 22. W. coast Am. 



f Scudd., Pro. Bod. 



iSoc. Nat. Hist. > Lower Cal. 

 Wal 



alk. p. 52. 

 Tufalisca lurida , "Walk. p. 53. St. Domingo. 



Nemoiius me^ficanusj '* 57. Ojaco, Mex. 



j Scudd., Pro. Post. ) ' 

 '* cirottmcinctus , < Sac. JSat. Hist. \ Mexico. 

 ( Walk. p. 57. J 



Hapithus quadratus, Scudd., Vent. Dee. Gryll. Texas . 

 Oi-ocharis signutus. Walk. p. 61. Mexico. 



' ' seituliis, " 62 . Honduras . 



" fusiformis, " 63. " 



" — ^"^-> {''S'''iC^."/S.-|Ccnt.Am. 



Eneoptera insularis. Walk. p. 66. Jamaica. 



Phyllopalpus latipennis, " 68 . " 



' ' nigfovm'ius, * ' 70 . Mexico . 



Lebussa tenuicornis. *"' 75. St. Domingo. 



Platydactyhis similis , ' * 78. " 



Zaora cineti^es , " 8S). Jamaica. 



CEcantlius mgricomis , " i)3. Illinois. 



■' varico7'nis, " 1)4. Mexico, 



" fonnosus, " 94. " 



Laurepe valida, " 97. Jamaica. 



