OPISTHOBRANCHIATA FROM THE ABROLHOS ISLANDS. 553 
Genus Glossodoris Ehrenberg, 1831, Symb. Phj's. [unpaged, 
butonp. 92J. 
Type by subsequent designation : G. xantlioleuca Ehrenb. Red Sea. 
Gray, Proc. Zool. Soc. Lond. 1847, p. 164. 
But G. xantlioleuca IjhYenh. = Doris pallida Riipp. et Leuok., 1828. 
Tlie type is therefore here designated G. pallida (Riipp. et Leuck.), 1828. 
Sjnouymy: AcTiNoDORis Elirenberg, 1831. 
Type by monotypy : A. sponsa, Ehveiib. Symb. Phys. [p. 93] ; vide also 
Gray, Proc. Zool. Soc. Lond. 1847, p. 10-4. 
Ptekodoeis Ehrenberg, 1831. 
Type by subsequent designation : P. picta Ehrenb., Gray, Proc. Zool. Soc. 
Lond. 1847, p. 104. 
Chbomodoeis Alder & Hancock, 1855. 
Type by original designation and monotypy : D. magnifica Quoy et Gaim., 
Alder & Hancock, Mon. Brit. Nud. Moll. pt. vii. 18.55, p. xvii. 
GoNioBRANCHUs Pease, 1866. 
Type by designation : G. vibrato Pease, Pease, Amer. Jour. Couch, ii. 
1866, p. 204. 
Cliromodoris, the generallj' accepted name for this genus, was introduced 
by Alder and Hancock {vide supra). These authors in a subsequent paper 
(6, p. 115) say : — " The Goniodoris of Forbes has hitherto been considered a 
northern form — the southern species wliich some authors have referred to it 
belonging almost without exception to the allied genus Cliromodoris, which, 
on the other hand, has not been found further north than the Mediterranean." 
The name thus introduced was used by Bergh (11, p. 72), who gives as 
synonyms Doriprismalica d'Orbignj'' and Goniobranchus Pease, and again 
in 18 (p. 1), but this time with the synonyms Glossodoris, Actinodoris, and 
Pterodoris, all of Ehrenberg, 1831, twenty-four years earlier than Alder and 
Hancock's name. Bergh points out there and again in 1884 (23, p. 65) the 
identity of Ehrenberg's genera with that of Alder and Hancock, and in this 
he is right. 
Thus, in spite of the common usage of the generic designation Chromodoris, 
there is no doubt that Ehrenberg's names have considerable priority. The 
question as to which name should be employed is easily settled, for, while 
they were all published at the same time, Glossodoris comes first in order, 
and the first species is given as G. xantlioleuca, which Gray (44, p. 164) 
designated as the type-species. Bergh, in a paper where he re-examines 
Ehrenberg's types, states, in our opinion riglitly, that G. xantlioleuca is the 
D. pallida (Riipp. et Leuck.), and that all species of Glossodoris are con- 
generic. The genus then stands as Glossodoris with the type-species 
G. pallida (Riipp. et Leuck.). 
In various places Bergh includes Doriprismatica d'Orbigny, 1837 (11), as 
a synonym; but, while part of d'Urbigny's genus belongs to the present 
group, the type, D. atromarginata Cuv., 1804, is in reality a member of a 
