22 TOAD-SHAPED BUGS. 
coris femorata Pal. Beauv., which measures a little more than 
one third of an inch, is greenish when living, but after death 
changes to a pale yellow color, with blackish or dark brown 
markings. Members of this family are also predaceous; they 
creep about submerged plants, and suddenly seize some unlucky 
insect that comes within reach. 
To show how these insects look, a species from Arizona has 
‘been illustrated, Fig. 15. 
Fic. 15.—Ambrysus signoretii Stal. After Uhler 
FAMILY GALGULIDAE. 
(Toad-shaped Bugs). 
These predaceous bugs are not. strictly aquatic insects, but 
are found only near the muddy margins of streams, where the 
soil is always wet. Some even make holes in the ground in which 
they hide. Galgulidz have short feelers, almost entirely concealed 
under the head, and have a pair of ocelli not found in the aquatic 
bugs described thus far. In the typical forms we find a very 
broad and short body, with prominent and projecting eyes, as 
may be seen in the only species found in Minnesota, the Galgulus 
oculatus Fab. (Fig. 16). Another species, the Peloganus amer- 
icanus Uhl., may exist in Minnesota, but the writer has not seen 
any specimens from here. 
Galgulus oculatus Fab. is a queer looking bug found early 
in spring walking among stones on the low banks of rivers and 
lakes. Here it watches for small insects, and secures them by 
leaping suddenly upon them and clasping them between the front 
femora and tibiz, after which it sucks their blood. The upper 
