10 THE NAUTILUS. 
Arriving at Cross Lake my work was immediately to collect 
and my companion’s duty throughout the journey to prepare 
the tent, cut wood and cook, and other duties connected with camp 
life in the woods. 
At the Cross Lake inlet the following were collected: Unio com- 
planatus, Margaritana undulata, Anodonta fragilis, Spherium sulca- 
tum, Pisidium compressum, P. variabile, P.n. sp., Planorbis campan- 
ulatus P. bicarinatus, P. deflectus, Limnea emarginata, L. desidiosa, 
Pomatiopsis cincinnatiensis, ete. 
The second place visited was on the west side about 2 miles south 
from the inlet. Planorbis trivolvis was obtained in a place that ap- 
peared to be covered with water only in the Spring. Ancylus 
parallelus was found in large numbers, and a lot of good large spec- 
imens of Limnea emarginata in two feet of water. They seemed to 
feed on vegetation on the rocks. A little further down on the west 
side was a small stream in which a lot of Spheria and Pisidia were 
obtained. Unio complanatus Sol., Margaritana undulata Say and 
Anodonta fragilis Lam., are found all over the Fish River Lake, and 
need not be referred to as of especial interest to any locality. 
On the east side where some large hills rise from the lake a small 
lot was obtained by dredging ; nearest the shore Pomatiopsis cincin- 
natiensis were plentiful in 15 feet of water; Campeloma decisum, of 
small size, Pisidium variabile and P. compressum were found from 
the shore to 25 feet, showing some variation in forms. On the 
shore Succinea ovalis, and, near by, in the woods under rocks, 8. 
avara were found. Also Conulus fulvus, Strobila labyrinthica, Zon- 
ites exiquus, Carychium exiguum and fragments of Pupa or Vertigo. 
The south end of Cross Lake afforded the best dredging ground, 
and some time was spent here. Pomatiopsis cincinnatiensis Lea, was 
very plentiful, and Valvata tricarinata Say, V. sincera Say, were col- 
lected from 5 to 20 feet. Planorbis trivolvis, P. companulatus, P. bi- 
carinatus, P. deflectus and P. hirsutus were not plentiful. 
One of the most interesting colleéting grounds is Square Lake, 
which is the largest and handsomest lake in Aroostook Co. At 
the inlet from Cross Lake the bottom is covered with large and fine 
specimens of Limnea emarginata and the var. Mighelsi. Planorbis 
parvus (?) Say, Planorbis sp.?, a peculiar specimen, P. campanulatus, 
aform of small size, P. bicarinatus, Physa ancillaria Say, are plenti- 
ful in this place, but nowhere else in this region to my knowledge. 
The shore is covered with dead shells of the above named species. 
