84 University of California Publications. [ ZooLoGy 
The relations of the several generations in the life cycle, as 
now understood, may be indicated by the following scheme, made 
without regard to theoretical views as to the exact nature of the 
relationships : 
Gonozooid 
| 
Embryo = Beginning of cycle 
| 
Oozooid 
} 
Bud 
\ 
\ 
\ 
\ 
Trophozooid | 
\ 
\ 
Phorozooid \ 
Gonozooid 
Embryo = Beginning of cycle 
A great variety of nomenclature has been employed by dif- 
ferent writers to designate the several generations of Doliolum. 
That here used, though not without objections, appears to me 
to be the best of any yet proposed. It is in the main from Herd- 
man, 1888 and 1904. 
The chief synonyms found in the literature of the subject 
are as follows: 
Gonozooid (Herdman); sexual animal (Krohn, Grobben, 
Uljanin) ; sexual generation A (Keferstein und Ehlers). 
Ooozooid. (Herdman) ; asexual animal (Krohn, Gegenbaur) ; 
generation B (Keferstein und Ehlers); first nurse generation 
(Grobben) ; nurse (Uljanin) ; blastozooid (Herdman, ’88). 
Trophozooid (Herdman) ; lateral buds, generation C' (Kefer- 
stein und Ehlers); lateral buds (Grobben) ; nutritive animals 
(Fol. Uljanin). 
Phorozooids (Herdman); median buds (Krohn, Gegenbaur, 
Grobben) ; generation C™ (Keferstein und Ehlers) ; foster-ani- 
mals (Uljanin). 
