MUSEUM OF COMPARATIVE ZOOLOGY. 235 



by naturalists. No additions worth mentioning to our knowledge of this 

 extraordinary genus has been made since Verrill's original paper. Prof. Ver- 

 rill collected Callinema on two different occasions, and he records that he 

 found three specimens in all. In the sunmier of 1885, I also found this jelly- 

 fish among the Eastport wharves, and took a single specimen. 



My specimen of Callinema was collected under most unfavorable circum- 

 stances. The water was very rough, and it was with great difficulty that I 

 succeeded in capturing the medusa and bringing it on shore. When the genus 

 was first seen it was mistaken for a Cyanea, and before its capture it was re- 

 garded as a new specimen of Zygodactyla. It was only later, when brought on 

 shore, that it was possible for me to detect its true relationship, and to estab- 

 lish its identity with the rare Callinema. 



This genus is one of the most extraordinary found on the New England 

 coast. It is believed that an extended account of its anatomy is necessary, 

 not only to show how distinct it is from a Pacific Ocean relative, H. ambigua, 

 but also to afford a means of comparison and determination of the systematic 

 position of a Mediterranean ally, called by Haeckel Phacellophora sicula. 



The original description* of Callinema by Prof. Verrill is concise, and 

 leaves no doubt as to the form of the more important organs of his genus. 

 Unfortunately, his account is unaccompanied by figures, so that some details 

 of structure need illustration to render his description clearer. Since my re- 

 discovery of Callinema, Prof. Verrill has sent me woodcuts representing por- 

 tions of the disk and tubes, and part of a tentacle, so that I can easily 

 follow his written description as far as these organs are concerned. There is, 

 however, still believed to be a call for the publication of figures of the medusa 

 as a whole, to show the relationship of the parts. In the present description 

 I have simply tried to emphasize certain details of structure, barely touched 

 upon in the original accounts, and to figure the outlines of the medusa as a 

 help to future investigators. 



Callinema ornata, Verr. 



Disk (Figs. 2, 3) flat, thick, with rounded apex, fourteei) inches in diam- 

 eter.f The margin of the bell hangs downwards when the medusa is in 

 motion. The external surface of the bell (Figs. 1, 2) is covered with small 



* Description of a Remarkable New Jelly-fish, and two Actinians, from the Coast 

 of Maine. Am. Journ. Arts and Sci., Vol. XL VIII. pp. 116-118. See also Ann. 

 Mag. Nat. Hist., Vol. IV. p. 161. 



Haeckel (System der Medusen Acraspeden, p. 643) prints a condensed notice 

 of Callinema, under the name Phacellophora, but does not mention Prof. Ver- 

 rill's original description in the American Journal. Verrill's description in the 

 " Annals and Magazine of Natural History," used by Haeckel, is, however, the 

 same as the original account. 



t One of Verrill's specimens was eighteen inches in diameter and another ten. 



