594 THE AMERICAN NATURALIST. [VoL. XXXV. 
NARCOMEDUS. 
No representatives of this order have been taken by the present writer 
along our northeastern coast, and but few have been even reported from 
within the range of this synopsis. The following records and references 
may therefore suffice : 
Cunoctantha octonaria McCr. Charleston Harbor. Proc. Elliott Soc., 
Vol. I. 
Cunoctantha incisa Mayer. ‘Tortugas. Bull. Mus. Comp. Zodl., Vol. 
XXXVII, No. 2, p. 66. 
Aginella dissonema Heck. Tortugas. Of. czz., p. 66. 
SIPHONOPHORA. 
Of Siphonophora recorded from northeastern Atlantic waters, by far the 
larger number are products of the Gulf Stream, very few, if any, being 
indigenous faunal elements. Those more familiar and of commoner record 
may be grouped under the following sections : 
A. DIscONECT&. Siphonophora with discoidal pneumatophore, but 
devoid of nectophores or bracts. 
1. Velella mutica Bosc. Pneumatophore an elliptical or oblong disk, 
usually with an oblique vertical crest, and with the several zooids 
attached to the lower surface. Common in subtropical regions 
and in Gulf Stream, upon the latter of which they are occasionally 
borne northward to the New England coast. 
2. Porpita linneana Less. Pneumatophore a circular disk, but with- 
out a vertical crest. Otherwise similar to former and of similar 
habits and distribution. 
B. CALCYONECT#. Siphonophora without pneumatophore, but with 
one or more nectophores. 
1. Diphyes pusilla McCr. Polygastric, with two nectophores at the 
apex of a long tubular trunk. 
2. D. formosa Fewk. Cf. Report on Meduse of Gulf Stream Region. 
Commissioner of Fish and Fisheries, 1884, p. 963. 
3. D. bipartita Costa. Reported by Mayer (Bull. Mus. Comp. Zobl., 
Vol. XXXVII, p. 74) from Newport, R. I. 
4. Agalmopsis carum A. Ag. 
Nanomia cara A. Ag. Polygastric, with long tubular trunk and 
with numerous siphons and bracts. 
5. Agalma okenit Esch. 
6. Spheronectes gracilis Haeck. Reported by Fewkes from New- 
port, R. I. (Bull. Mus. Comp. Zobl., Vol. VIII, p. 166.) 
7. Gleba hyppopus Forsk. Reported by Fewkes off Marthas Vine- 
yard. (Rept. U. S. Comm. Fish and Fisheries, 1884, p. 963.) 
