104 E. S. Morse on the early stages of Brachiopods. 
The eggs (fig. 1) were kidney-shaped, and resembled the 
statoblasts of Fredericella. No intermediate stages were seen 
between the eggs and the form represented in fig. 2, This 
stage recalled in general proportions Megerlia or Argiope in 
ing transversely oval, in having the hinge-margin wide and 
straight and in the large foramen. Between this stage and the 
next the shell elongates until we have a form remarkably like 
Lingula (fig. A berries like Lingula, a peduncle longer than 
the shell, by which it holds fast to the rock. It suggests also 
in its movements the nervously acting Pedicellina. 
_iIn this and the several succeeding stages, the mouth points 
directly backward (forward of authors), or away from the 
nded by a few ciliated 
each side of the stomach ; from this fold the complicated liver 
of the adult is developed, first, by a few diverticular appen- 
ges, as seen in fig. 6. 
en the animal is about one-eighth of an inch in length 
the lophophore begins to assume the horse-shoe shaped form of 
Pectinatella and other high Polyzoa. The mouth at this stage 
(fig. 6) begins to turn ioek the dorsal valve (ventral 0 
authors), and as the central lobes of the lophophore begin to 
develop, the lateral arms are deflected, as in fig. 7. In these 
stages an epistome is very marked, and it was noticed that the 
end of the intestine was held to the mantle by attachment, as 
in the adult, reminding one of the funiculus in the Phylactole- 
nat ces 0 i 
