844 The Siphonophores. [ August, 
4, With nectocalyces, without covering scales. 
sophoridee. 
. Without nectocalyces, with covering scales. 
Athorybiade. 
horybia formosa F. 
Nectocalyces in several series with covering scales, 
Forskaliadz 
*Stephanomia atlantica F. 
With nectocalyces in two rows, with covering scales, 
Agalmidæ. 
a 
A 
> 
1. Tentacular knobs with involucrum and many terminal 
laments. 
Calliagalma F. 
2. Tentacular knobs with involucrum and two terminal fila- 
ments 
a Aea Paru F. 
du 
a Tentaenlar Koia with involueram and one filament. 
apsis fragili 
4. NUE knobs sak involucrum, with one terminal 
fil 
ament. 
Halistemma Huxley. 
Polyp-like bodies on the nectostem between the nectocalyces. 
Polyp stem with appendages in clusters. 
Doubtful genera and sepas oe American waters + 
: hing nomia ca y 
aliphyta? an 
B.—Without a float. F eae sometimes Fit by an oil globule in one oF 
bot nectocalyces 
I.—Several nectocalyces, 
Hippopodiz. 
*Gleba hippopus Forsk. 
II.—One or two nectocalyces. 
iphyæ. 
a. One nectocalyx.? 
sts ot 
I. Nectocalyces with flexible walls of about equal size, 
ranged side by side. 
io 
l The peculiar development of Nanomia, described by A. OE is different im 
that of any other known Physophore. Jt resembles in many partic ars Hali 
but as its adult tentacular knobs are unknown, I am unable to si it to this genus z 
he absence es a primitive scale in the young allies it to Agalmopsis as 
ited the nam 
? The iri knobs of Haliphyta are unknow 
as I have lime 
* Muggizea, as limited by Chun, would also come _ under “B, a” ifa pei 
nectocalyx is never developed and not broken off as formerly rappor 
‘cies of this genus is sometimes found in North American waters 
