2 7 
HALL 22. 
REPTILES AND FISHES. 
In reality, there are in this Hall materials illustrating six 
of the primary divisions, called classes , of the vertebrated ani- 
mals, viz: the ascidians {Tunicata) ; the lampreys (Cyclostomi) ; 
the sharks, etc. {Elasmobranchii) ; the true fishes {Pisces); the 
salamanders, frogs, etc. [Batrachia) ; and the reptiles {Reptilia). 
Case 1. — The little material representing the group of ascid- 
ians ( Tunicata). This consists almost wholly of glass models. 
There is also a very little material belonging to the Cyclostomi 
(Lampreys). 
Cases 1 to 6, 8. — The true fishes also begin in Case i. The 
two species of sturgeons, which should come in here, are placed 
in Case 8, on account of their large size. As far as possible the 
fishes are arranged in systematic order. The materials are not 
extensive. They consist of mounted fishes, usually not well pre- 
pared, of specimens in fluid, and about sixty plaster casts of fishes 
which inhabit the coasts of Norway. 
The fluid preparations consist of some of the fresh-water 
fishes of the region about Chicago, and a collection made on the 
western coast of Florida and presented to the museum by Mr. 
Owen F. Aldis, of Chicago. 
Among the more striking fishes in the collection, attention 
may be called to the conger, the muraena, the sword-fish and the 
goose-fish. 
Case 7. — A number of sharks, mostly from foreign waters. 
The mackerel shark, the tiger shark ( Stegostoma ) from Aus- 
tralia, and the angel shark are worthy of attention. 
Case 9. — Specimens of the rays (Kaice). The saw-fish {Pristis) 
and the species of Rhinobatus are the most shark-like in appear- 
ance. The torpedo is an electric fish. The genus Raja is com- 
mon, especially in northern seas. The Urogymnus is a remark- 
able ray. The rough skin is used for covering shields, etc. Stoas- 
odon is one of the “sting-rays,” there being a barbed weapon in 
the base of the tail. 
In the lower division of this case are exhibited two speci- 
mens of the green turtle, and one of a South American land 
