228 CLAVPOLE, (VoL. XIV: 
while all the earliest animals to appear in the summer are 
smaller than those found later in the season, and some of them 
exceedingly small. It might be inferred from this that the old 
animals die and the young ones remain in the sand where they 
go when first hatched. This accounts for their absence in 
early spring and the presence of very small ones among those 
first found in the summer. The largest ones would be those 
first hatched in the preceding summer and the smallest the 
last; the latter have grown very little, and their chief advance 
from the newly hatched condition is in pigmentation. The 
absence of any dead bodies of the adults in the fall is easily 
accounted for by their exposure to the tides and consequent 
removal. 
One more point was considered in connection with the 
ovarian egg; that is the existence of a micropyle. No evi- 
dence of such a structure was found; if it exists it must be 
extremely small. No special cells can be found taking part in 
its formation; the contrary is true of many of the Orthoptera, 
and still more so of the complicated micropyles found in Dip- 
tera, Lepidoptera, and others. Whether the places occupied 
by the nutritive cells would have anything to do with such 
organs was not decided; it seems more probable that they have 
some bearing on the connection of the eggs with one another. 
As shown in Fig. 15, @ and 4, the eggs are united firmly 
where they come into contact with each other by a thickened 
plate of the envelope; this is formed in the ovary, as there are 
no glands in the oviduct to serve any such purpose. These 
plates can be seen formed in unlaid eggs. As shown in Fig. 
11, the follicle does not divide the eggs from each other where 
the nutritive cells are, and it appears that at this point the 
membranes are later brought into contact and firmly cemented 
together. Hence, the eggs must pass from the ovary in a 
solid, more or less irregular mass. In several cases an egg 
was found in the anterior part of an ovary after egg laying in 
an advanced state of degeneration, and the inference is that 
it failed to be attached to the rest of the mass and hence was 
not laid. 
