Names of hydroids (Cnidaria, Hydrozoa) established by Charles McLean Fraser (1872 - 1946), excluding those from Allan Hancock Expeditions
Author
Calder, Dale R.
Author
Choong, Henry H. C.
text
Zootaxa
2018
2018-10-02
4487
1
1
83
journal article
29136
10.11646/zootaxa.4487.1.1
939f52d6-d58b-4a22-8aec-dd5c6a591067
1175-5326
1456161
524B23B9-8EAA-4BD6-8937-A1B8F1C057B9
Tubularia
crassa
Fraser, 1941b
Tubularia
crassa
Fraser, 1941b
: 81
, pl. 14, figs. 5a, b.
Syntypes
.
USNM 22746
:
USA
,
Massachusetts
, off
Martha’s Vineyard
,
40°49’30”N
,
70°47’W
, R/
V
Fish Hawk
Sta.
988, 0
7 September
1881
, 55 m, rake dredge, two polyps, labelled “
type
”; ethanol.
Lectotype
, by present designation.
USNM 22746
:
USA
,
Massachusetts
, off
Martha’s Vineyard
,
40°49’30”N
,
70°47’W
, R/
V
Fish Hawk
Sta.
988, 0
7 September
1881
, 55 m, rake dredge, one polyp, in fairly good condition, with gonophores, labelled “
type
”; ethanol.
Paralectotype
.
USNM 1458912
:
USA
,
Massachusetts
, off
Martha’s Vineyard
,
40°49’30”N
,
70°47’W
, R/
V
Fish Hawk
Sta.
988, 0
7 September
1881
, 55 m, rake dredge, one polyp, in poor condition, with gonophores; ethanol.
Type
locality.
USA
,
Massachusetts
: off
Martha’s Vineyard
,
40°49’30”N
,
70°47’W
, 30 fm (
55 m
) (
Fraser 1941b
).
Current status.
Invalid.
Remarks.
Fraser (1941b)
designated material at the NMNH as the “
type
” of
Tubularia
crassa
(USNM 22746). The collection contains two specimens. One had been proposed as the
lectotype
and the other as a
paralectotype
of the species by K.W. Petersen in inter-museum correspondence, but the designations were never published and cannot be upheld as valid. The same designations are repeated here, with the
lectotype
having the original collection number (USNM 22746) and the
paralectotype
being assigned a new number (USNM 1458912).
The two original
syntypes
were also examined by
Calder (1975)
, who concluded that they were identical with
Corymorpha pendula
L. Agassiz, 1862
. As with that species, the hydroids appear to be solitary inhabitants of soft substrates, hydrocauli are thick and parenchymatic, hydranths have smaller oral and larger aboral whorls of tentacles, and gonosomes are fixed sporosacs rather than free medusae (L. Agassiz 1862;
Fraser 1944a
). WoRMS currently lists
T. crassa
as a
taxon inquirenda
.