OF GENERA IN ZOOLOGY. 
Psydraa Le Conte. Ann. Lyc. Nat. 
Hist. N. Y., 1848, p. 151, pi. 2, fig. 6. 
1848. Col., Carab. Le Conte. 
Fsyllopsis L5w. Yerh. zool.-bot. Ges. 
Wien, xxviii, p. 587. 1879. Hem. 
Fayllotoxus Thomson. Pbysis, i, v, p. 
74. Nom. propr. 1868. Col. 
Psyra Stal. Bibang Svensk. Yet. Akad. 
Handl., iv, no. 5, p. 55, in table. 
1876. Ortb. 
Fsyttala Stal. Ofv. Yet. Akad. Fdrh., 
1859, p. 187. 1859. Hem. 
Platystolus Bolivar. Anal. Ortb., An. 
Soc. Espan. Hist. Nat., vii, p. 450, 28. 
TvTiaTvg, latus ; GTokg, stola. 1878. 
Ortb. Loc. Bolivar. [Tr. p.268.] 
Pteraclis Oken. Lebrb. Natnrg., vi, p. 
23. 1816. Pisces. 
Pteralastes Loew. (=Pterellastes Loew, 
1863.) 1864. Dipt., Syrpb. Verrall. 
Pteranodon Marsh. Amer. Journ. Sc. 
Arts, [3], xi, p. 507. n repov, a wing; 
a priv., without; odovg, a tooth. 1876. 
Pterosauria. Marsh , Dalton. 
Fteraspis Kner. Naturw. Abb. Gesellscb. 
Haid., i, p. 159. 1847. Moll., Cepfi. 
Pteratomus Packard. Proc. Essex Inst., 
iv, p. 137. Tvrepov, ala; aropog. 1864. 
Hym. Packard. 
Pteredontia Macquart. (=Pterodon- 
tia.) 1835. Dipt. Agassiz. 
Pterelaeus Br£me. Essai Monogr. Cos- 
syph., i, p. 27. 'Krepov , ala; Elaeus. 
1842. Col. 
Pterelastes (Loew) Schiner. ( = Pte- 
rellastes Loew, 1863.) 1868. Dipt., 
Syrpb. Verrall. 
Pterennis (Rondani) Schiner. (=Pte- 
remis Rondani, 1856.) 1864. Dipt., 
Muse., Borb. Verrall. 
Pterichnus Hitchcock. Suppl. Ichnolo- 
gy New England, p. 14. rcrepov. 1865. 
Vest, incert. sed. 
Pterichthya Thomson. Pbysis, i, vi, p. 
156. 7r repov, ala ; Ix&vg, piscis. 1868. 
Col. 
Pteritonella Billings. 1874. Moll., 
Lamellibr. Dalton. 
Pterobothrium Diesing. Syst. Helm. , i, 
p. 564. 1850. Yermes. 
Pterocera Lamarck. Journ. Soc. Hist. 
Nat. 1799. Moll. Agassiz. 
Pterocerella Meek. Smiths. Inst. Check 
List Invert. Foss., p. 36. (Type Har- ! 
gotippana.) 1864. Moll., Gast. Dali, i 
285 
Fterocerus Brongniart. Moll. Agassiz. 
Fterochaos Thomson. Pbysis, ii, p. 
170. Col. 
Fterocheilus Oken. Lebrb. Naturg., v, 
p. 580. (?=Pterochilus Klug.) 1815. 
Hym. 
Fterochile Blanchard. Hym. Agassiz. 
Pterochims Munster. Beitr. Petref., 
ii, p. 27. 1839. Crust. 
Pterochlorus (Rondani) Passerini. 
Afidi. (=Dryobius Koch?) Hem., 
Aphid. Monell. 
Pterocomma Buckton. Monogr. Brit. 
Aphid., ii, p. 142. rtrepov, ala; icbppa, 
a notch. 1879. Hem., Aphid. 
Buckton, Monell. 
Pterocyclos Benson. Journ. Asiat. Soc. 
Bengal. ( = Cyclostoma.) 1832. Moll. 
Agassiz. 
Pterodactylidae Bonaparte. Isis, 
1841, p. 614. 1841. Rept. 
Pterodactylina Bonaparte. Isis, 
1841, p. 614. 1841. Rept. 
Pterodactylus Oken. Lebrb. Naturg., 
vi, p. 312. 1816. Rept. 
Pterohelaeus But me. Monogr. Cossyph., 
i, p. 27. 1842. Col. 
Pterolachisus Rondani. 1842. Dipt., 
Tip. Verrall. 
Pteromalinites Heer. Urw. Schweiz., 
p. 388. 1865. Hym. 
Pteromicra Lioy. nrepov ; pupa. 1864. 
Dipt., Strat. Bigot, Verrall. 
Pteronautilus Meek. Palaeont. Upper 
Missouri. Pteron; Nautilus. 1864. 
Moll., Cepb. 
Pteronema PIaeckel. Monogr. Med., i, 
p. 101. nrepov) vijua. 1879. Coel.,Med. 
Pteroniteila Billings. Can. Nat., n. s., 
vii, p. 301. 1874. Moll., Lamellibr. 
Dalton. 
Pteropaectria Loew. Zeitscbr. gesammt. 
Naturw., v, p. — . 1868. Dipt., 
Erypet., Bigot; Ortal., Verrall. 
Pteropectria (Loew) Rondani. (= Pte- 
ropaectria Loew, 1867.) 1869. Dipt., 
Muse., Ortal. VerrcQl. 
Fteroplianes Gould. Intr. Troch., 8vo 
ed., p. 105. 1861. Aves. 
Pteroplax Hancock and Atthey. Nat. 
Hist. Trans. Northumb. and Durham, 
iii, p. 66. ? 1870. Saur. Garman. 
Pteroplistes Brunner. Mitth. sebweiz. 
ent. Gesellscb., iv, p. 169. rrTt-pov ; 
on?uoT7}g. 1873. Ortb., Gryll. 
