426 



33] The Type of the Genus Rutilus Rafinesque, 1820. — Cy primes ruiihis is the 

 type of Rutilus Rafinesque, 1820. Rutilus plargyrus is the type of Plargyrus Rafi- 

 nesque 1820. 



34) Aeshna vs. Aeschna. — Since evidence of the derivation of the word is not 

 contained in the original publication, the original spelling of Aeshna should be pre- 

 served. 



35) Types of Genera of Binary but not Binominal Authors. — In determining 

 the type of a genus, the selection must be confined to species included under the 

 generic name in question at the time of its original publication, regardless of the fact 

 whether they were named binominally or not. If, however, a generic name is dis- 

 tinctly proposed as a substitute for an earlier generic name, the species of the latter 

 are to be taken into consideration. 



36) Emendation of Trioxocera^ Dioxocera and Pcnioxocera. — The Commission 

 is of the opinion that the original publication of Trioxoccra, Dioxocera and Pentoxo- 

 cera make it evident that an error of transcription (seu transliteration) is present, 

 and that these names should be emended to read Trioxocera, DioT^ocera and Pent- 

 oxocera. 



37) Shall the Genera of Brisson's »Ornithologia« , 1760. be accepted? — 

 Bris son's (1760) generic names of birds are available under the Code. 



38) On the Status of the Latin Names in Tun s tall, 1771. — The Latin names 

 inTunstall's Ornithologia Britannica, 1771, are available in so far as they are 

 identifiable through the bibliographic, page, and illustration references given, or 

 through the English names quoted from Pennant, 1768, or through the French 

 names quoted from Brisson, 1760. 



39) On the Status of the Latin jSTames in C u v i e r , 1800. — The Latin names in 

 the systematic tables given inCu vier ,1800(Leçons d'anatomie comparée), are avai- 

 lable in so far as they are identifiable through the bibliographic references given on 

 page xix of the introduction. 



40) Salmo eriox vs. S. frutta and S. fario ; Benioelms acuminatus vs. H. macro- 

 lepidotus. — On basis of the premises submitted, it is not necessary to substitute eriox 

 in place of fario or trutta; Cu vi er 's (1817) selection of macrolepidotics has prece- 

 dence over the selection of acuminatus by Jordan & Seal e, 1908. 



41) Athlcnnes vs. Ablennes. — As the original publication shows an evident 

 lapsus calami, the name Athlennes should be emended to read Ablennes. 



42) The type of Carapus Rafinesque, 1810. — Carapus Rafinesque, 1810, is mo- 

 notypic, type Qymnotus actis Linnaeus. 



43) On the Status of Genera the Type Species of Which are cited without 

 Additional Description. — The characters given for Teleoymus, Isoplata, Alloderma 

 and Aphobetoideus cover the genera and the type species, and the generic and speci- 

 fic names are published in the sense of the Code. 



44) Lepioccplialus vs. Conger. — Leptoeepliahts Gronovius, 1763 and Gmelin 1789. 

 type morrisii, takes precedence over any later generic name for which the adult 

 stage of this animal has been designated as type. 



45) The Type oî SynynathuslAnn&QUB, 1758. — So far as one can judge from the 

 premises submitted, the type of Syngnathus Linnaeus, 1758, has never been defini- 

 tely designated, and there is no objection to designating, as such, the species acus 

 Linnaeus to accord with general custom and convenience. 



46) Status of Genera for which no species was Distinctly Named in the Origi- 

 nal Publication. — In genera published without mention, by name, of any species, no 

 species is available as genotype unless it can be recognized from the original generic 

 publication; if only one species is involved, the generic description is equivalent to 

 the publication ^Xus albtis, n. g., n. sp.« ; if several species are referred to but not 

 mentioned by name, one of these species must be taken as type; if (as in Aclastus 

 Foerster (1868) it is not evident from the original publication of the genus how many 

 or what species are involved, the genus contains all of the species of the world which 



