188 
J | Marsipobranchii 
Ganodichthyidae ! Ganoidei 
; Teleostei 
! Selachii ') ? > 
Selachodichthyidae Phounichthyidan#) RAE hin. 
Dec. 31* 1889. 
Appendix. 
1) The young of Polypterus have been stated to possess external 
gills. This looks so like an Eastern fable; for such gills are conspi- 
cuous by their absence in Amia, Lepidosteus, and Acipenser, that one 
inclines to the opinion that possibly the young of Protopterus have 
been mistaken for those of Polypterus. If this be the correct expla- 
nation of this remarkable statement, the presence of external gills in 
the larva is a peculiarity of the Selachodichthyidae: I should further 
regard these gills in embryo Selachians as remains of organs once 
functional in the free larval life, which has now become entirely sup- 
pressed. 
2) The recent paper of JuNGERSEN (Arbeiten a. d. Zool.-zoot. In- 
stitut zu Würzburg, Bd. IX, p. 89—219) only came into my hands 
while this was passing through the press. About one point touched 
upon in this valuable memoir of JUNGERSEN’S I wish to make a re- 
mark. BALFOUR and PARKER’s account of the vasa efferentia of the 
testis of Lepidosteus appears to me to be correct, but I agree with 
JUNGERSEN in the opinion that this point, along with others in the 
morphology of the male urino-genital organs of Ganoidei, requires 
renewed investigation on perfectly fresh material. The male organs 
and ducts of Amia closely resemble those of Lepidosteus. 
1) Of the Holocephali I have not ventured to say anything: because 
I have had no opportunity of investigating either their anatomy or de- 
velopment, and on some important points I could get no information 
from the literature. They are usually classed, and perhaps rightly, as a 
division of the Selachii. 
2) The development of lungs forms the justification for the setting- 
up of this subdivision. 
Anatomische Gesellschaft. 
Der Gesellschaft beigetreten sind die Herren Dr. Kart HEIDER 
in Berlin und Dr. H. Rıese in Freiburg im Breisgau. 
Der Schriftführer: 
K. BARDELEBEN. 
Frommann’sche Puchdruckerei (Hermann Pohle)in Jena, 
