Or ROT SNMP qu Eia 
1894.] Rules of Nomenclature. 931 
indicating both the name of the author who established the 
same and the name of the author who subdivided the species. 
as Taenia pectinata Goeze partim Riehm. 
According to article 8, the name of the first author is put in 
parenthesis if the species has been placed in a different genus, 
as Moinezia pectinata (Goetze partim) Riehm. 
VI. . FAMILY NAMES. 
12. A family name must be discarded and replaced by 
another if the generic name from which it was formed is a 
synonym, and is itself discarded. 
VII. Law or PRIORITY. 
13. Zoological nomenclature dates from the issue of the sixtlr 
edition of Systema naturae, published in 1758. This is the 
standard work to which that zoologist must refer who wishes 
to investigate and employ the oldest generic and specific 
names, provided they conform to the fundamental rules of 
nomenclature. 
14. The law of priority is applicable to family names or to 
those of higher groups, as well as to the names of genera and 
species, provided groups are concerned which have a similar 
extension. 
15. A species which has been wrongly identified, must take 
its correct name, according to article 35 of the rules adopted 
by the Zoological Congress of 1889. 
16. The law of priority must obtain, and consequently the 
oldest name must be retained. 
(a) When some part of a creature has been named before 
the creature itself was known, as in the case of fossils. 
(b) When the larva, supposed to be an adult form, has been 
named before the adult form was known. 
Exception should be made for the Cestodes, the Trematodes, 
the Nematodes, the Acanthocephales, the Acariens and, in fine, 
for all animals passing through metamorphic and migratory 
stages. Many of these species are now being revised, and their 
nomenclature will possibly undergo a complete change. 
