418 DIRECTIONS FOR COLLECTING 
that they may not deserve passing notice. While collecting 3 
land-shells, opportunities are often presented for securing 
specimens of valuable species of insects, crustaceans, and — 
worms, especially rare and curious species of beetles and cen- 
tipedes, whose habits necessarily lead them to seek shelter — 
and concealment with the larger snails. The chrysalides of — 
various species of Lepidoptera are also found in similar situ- _ 
ations, and may be secured and preserved as a means of ob- | 
taining more perfect specimens of the mature insects than — 
can be obtained by hunting the insects themselves. Various — 
species of Salamanders (or “lizards,” as they are often 
termed for want of a more appropriate name) may also be — 
found in the damp grounds where snails seek shelter under — 
logs, ete. 
In searching for aquatic mollusks, many rare species of : 
fish of small size, such as are just suited for the aquarium, — 
will often be found and captured with the mollusks. Stage 
nant waters are rich in various forms of insect life, and some 
of the species are remarkably interesting for their singular . 
forms and curious habits. In such situations will be fo 
both the larvæ and perfect insect of several species of Dyis- 
cus and allied genera, some of the species quite large, ones 3 
quite small. Such stagnant waters also produce va : 
other kinds of insects (see Vol. I, p. 328, fig. 23 P- 436, ; 
fig. 2), including those that swim and skate (Vol. I, p: 328, : 
fig. 3) about over the surface of the water as well also pe 
those that propel themselves boat-like ¿n the water (Vol. b 
p- 328, fig. 1). A limited class of crustaceans and annelids 
are found in similar stations, —all of them objects of curious — 
interest, not less on account of the singularity of their forms 
than on account of the wonderful habits that disclose thel 
adaptation to the conditions in which they are found. 
o the microscopist, also, the stagnant water offers i 
world for investigation (Vol. I, plate 13, illustrates some - 
the forms). A little tuft of the green slimy veg? me 
. jt z j . m Ng 
that in such situations is found adhering to sticks, twigs" 


