Two New Calycophorae, SIphonophorae 1 
Angeles Alvarino 
The new species here described were observed 
in the plankton collections obtained by the 
NAGA Expedition (1959-1961) in the South 
China Sea and the Gulf of Thailand. 
Family abylidae L. Agassiz 1862 
Subfamily abylopsinae Totton 1954 
Genus Enneagonum Quoy and Gaimard 1827 
diagnosis: Superior nectophores with open- 
ing to nectosac next to dorsal wall of hydro- 
ecium at the base of a large triangular basal 
facet. Bract cuboidal; somatocyst with apical 
horn and two short stubby ventrolateral 
branches. Gonophores with five prominent 
teeth; dorsal, one lateral and one ventral ridge 
incomplete; deep pocket beneath the apophysis 
(Sears, 1953). 
The genotype E. hyalinum Quoy and Gaimard 
1827, for which only the superior nectophore, 
bract, and gonophores are known, is well de- 
scribed by Sears (1953), together with the 
synonyms. 
Enneagonum searsae n. sp. 
HOLOTYPE: USNM No. 52701 
paratypes: usnm No. 52702 
etymology: Named for Dr. Mary Sears in 
appreciation of the privilege of working with 
her. 
description: Represented by only the bract 
and gonophores. Its bract is a truncated square 
pyramid; thus the top is a perfect square, with 
four lateral ridges prolonged at the base to a 
length almost equal to the height of the pyra- 
mid. Therefore, the bract is cuboidal, with a 
top square facet, two lateral trapezial facets 
(anterior and posterior), and the other two 
1 Contribution from the Scripps Institution of Ocean- 
ography, La Jolla, California 92037. These studies 
have been conducted under the Marine Life Research 
Program, the Scripps Institution’s component of the 
California Cooperative Fisheries Investigations, and 
with support from the National Science Foundation 
(NSF GB-2861). Manuscript received June 28, 1967. 
sides with a huge arch emphasized by the ex- 
tension of the ridges. Most of the entire basal 
part is the opening of the hydroecium (Fig. 
1 A,B). 
The somatocyst in the bract is like that in 
E. hyalinum , formed by two swollen ovoid j 
lateral branches and the conspicuous apical 
diverticulum. 
The gonophore is a complicated bell, with 
the dorsal and lateral teeth more prominent 
than in E. hyalinum gonophores. These teeth 
are emphasized by ridges like wings and by 
strong serrations. Pocket deep. (Fig. 1 C,D.) 
The illustrations of the bract and female | 
gonophore (Fig. 1), together with those of the 
superior nectophore, bract, and gonophores 
(male and female) for E. hyalinum (Fig. 2), 
make it easy to compare the morphological 
characteristics of these two species. The size of 
the bells of the siphonophores is variable; 
therefore, only the size of the whole specimen 
is given in the legends for the illustrations. 
distribution: See Table 1. 
Family diphyidae Quoy and Gaimard 1827 
Subfamily sulculeolariinae Totton 1954 
Genus Sulculeolaria Blainviile 1834 
diagnosis: The nectophores are smooth and 
round. The lateral canals of the posterior necto- 
phores make a loop from the ring canal to the 
upper part of the nectosac wails. The anterior 
nectophores lack the hydroecium cavity. In con- 
trast to the genus Lensia , which does not pre- 
sent looped canals, the anterior nectophores 
have lateral longitudinal ridges and also have 
a shallow hydroecium cavity. 
The genus Sulculeolaria is represented by the 
following seven species, the synonyms for which 
appear in Totton and Bargmann (1965). 
S. an gust a Totton 1954 
S. higelowi (Sears) 1950 
S. hiloha (Sars) 1846 
S. chuni (Lens and Riemsdijk) 1908 
