342 THE AMERICAN WATCORALIST. NOU, XXXVIL 
April and early May, when ephyre were being discharged in great numbers. 
During the summer season the polyps bud and stolonize very freely, from a 
single scyphistoma a colony of many individuals arising within a space of 
ten days. Figure shows such a colony reared within a watch-glass aquarium. 
Aurelia marginata L. Ag. 1862. 
Cont Nats Hast. (GF. States. Viole IV 
Umbrella flat dome-shaped to hemispherical, three times as broad as high. 
Mouth-arms relatively small, considerably shorter than the umbrella radius. 
Gonads very large. 
A southern medusa, reported by Agassiz from Key West, Florida. 
Callinema ornata, Verrill. 1869. 
Umbrella flat and disk-shaped, rather thick and aborally rounded; the 
exumbrella surface covered with wartlike papilla; walls transparent and 
with prominent radial canals which are of two sorts, one branching and 
anastomosing, the other simple and straight, each 16 in number. Margin 
with 16 lobes deeply incised within which is located a conspicuous rhopalium. 
Tentacles numerous and of varied size and length, arising from the under 
surface of the margin beneath the marginal canal. Manubrium large and 
pendulous and with prominent folded oral lobes, somewhat like those of 
Cyanea. Gonads 8, in prominent pouches within the gastric cavity. In 
size specimens vary from 10-18 inches in diameter. Distribution, taken at 
Eastport, Maine, by Verrill, and later by Fewkes, from whose account this 
description is condensed. Cf Bull. Mus. Comp. Zool. Vol. XIII, No. 7. 
Cyanea arctica, Per. & Les. 
Umbrella flat and disk-like, with a central aboral convexity, with 8 prin- 
cipal lobes and 16 or more secondary lappets; ocular pouches small sub- 
triangular, tentacular pouches two or three times as broad as the ocular. 
Color. — Radial pouches purplish to brownish; oral lobes deep chocolate 
brown ; gonads yellowish white ; tentacles variably colored, yellowish, orange, 
purplish or brown. 
Size. — From 100 to 50c mm. in diameter, though in many cases larger. 
A. Agassiz notes one having a size of seven feet and with tentacles more 
than 100 feet in length. 
Distribution. — Almost the entire Northeast coast of the United States. 
L. Agassiz has described two additional species, namely, C. /z/va, and 
C. versicolor. These are of doubtful distinctness, variation in size and 
coloration being the chief differences clearly recognizable. Collections 
