530 
Eschscholtz. 
REPORT OF COMMISSIONER OF FISH AND FISHERIES. 
[18] 
The largest of the other genera of Narcomeduse are 
50™™ in diameter, one-half the size of large specimens of S, incisa. 
In all specimens of 8. incisa found, the under wall of a stomach is 
supposed to be ruptured and absent. 
The liability of this to occur in 
Solmaridz has led me to suppose the same thing possible in my new 
species. 
ACRASPEDA. 
Family COLLASPIDA, Heckel. 

ATOLLA BAIRDII, Fewkes. 





















No. eens Station. | North latitude. | West longitude. | Depth. 
Ce ae o 4 4" | Fathoms. 
3 11663 2428 42 46 00 50 55 30 826 
4 15756 2732 387 27 00 73 33 00 1152 
| | kt 7, Fae i i 7 
TS Marginal | c,., a Diameter of | Breadth of 
No. | Tentacles. | lappets. | S°Pse bodies. | central disk. corona. 
| min, mm. 
3 2 46 3 40 18 
4 22 | 44 | 2 40 18 ‘ 
ATOLLA VERRILLU, Fewkes. 
Catalogue a. 4: North lat- | West longi- Number of 
No. | umber. |>etion. itude. tude. — Depth. | .pecimens. 
eee ea 
Lo) / uw oO J ul 
9 11672 2569 39 26 00 68 3 30 1872 1 
10 
11 15236 2717 38 24 00 71 13 00 Surface. 3 
12 
No Tentacles. |Marginallappets.. Sense bodies. 
9 26 52 26 
10 28 56 28 
11 28 56 28 
12 22 44 22 
- 
The two species of American Atollw, A. bairdii and A. verrillii,.can 
be readily distinguished by the size of the marginal sense bodies, 
which in the latter are larger, longer, and narrower than in the former. 
The number of tentacles in bairdii is generally twenty-two, while in 
