Zoological Nomenclature. 1 89 



varietal names, the varietal uame, if adjectival, agrees with it 

 grammatically. 



Example : Gorvus corax var. kamtschatica. 



If the word varietas is not used, the varietal name agrees gram- 

 matically with the generic name. 



Example: Corvus corax kamtschaiicus. 



34. 



a. In the notation of hybrids the name of the male parent pre- 

 cedes that of the female parent, and is united to it by the sign of 

 multiplication ( X ). The use of the sexual signs is not necessary. 



Examples : Capra hircus x Ovis (tries, or Capra Jiircus c? x Ovis 

 aries 2 • 



b. Hybrids may also be cited in form of a fraction, the male 

 parent forming the numerator and the female parent the deno- 

 minator. 



I-, 1 Capra hircus 



Example : — i^. -, . 



Ovis aries 



The fractional form is better, in that it permits the citation of the 

 observer when this is desirable, also in case one of the parents is a 

 hybrid. 



Examples : 



Branta canadensis Tetrao tetrix x Tetrao uroqaJlus 

 & 



Cyynopsis cygnoides'' GaUus gallinaceus 



In the latter case, however, parentheses may be used. 

 Example : {Tetrao tetrix x Tetrao urogallus) X GaUus gallinaceus. 



c. When the parents of a supposed hybrid are not definitely 

 known, the latter takes provisionally a specific uame, the same as if 

 it were a true species ; but the generic name may be preceded by 

 the sign of multiplication. 



Example : X Helminthophila leucobronchialis. 



35. 



The following words may be taken as generic names : — 



a. Greek substantives, for which the rules of Latin transcription 

 should be followed. 



Example : Ancylus, AmpJiibola, Pompholyx, Cylichna. 



The transcription should be made according to the following 

 Ust: — 



e = e (i/aXeos) Hyaha, not Hylcea. 



r) = e {■7Tetpi]vn) Pirena, not Pirina. 



Final r] = a {neiprirr]) .... Pirena, not Pirine. 



dz=th (rrfdvs) Tethys ; arrjdos — stethus, not sthetus. 



i=i (/3a\tds) Balia, not Balea. 



Ann. & Mag. N. Hist. Ser. 7. Vol. ii. U 



