464 Happon—The Actiniaria of Torres Straits. 
STICHOPHORA, Brandt, 1835. 
Non-tuberculated Minyadide, with twenty sulci externally ; twenty pairs of 
mesenteries, the two mesenteries which arise from (and really form) each sulcus 
consist of a perfect and an imperfect mesentery, the corresponding pairs of which 
occur at the neighbouring sulci; two pairs of perfect directives; tentacles very 
small, bicyclic, forty in number; the endodermal sphincter muscle is reduced to a 
single fold; gonads not yet known. 
I would provisionally include in this genus S. Brandti (Andr.) [ Stichophora 
cyanea, Brandt—the specific name was pre-occupied by Cuvier for Minyas cyanea, 
so Andres rightly changed it, but wrongly erected a new genus (Phlyctzenominyas) 
for it], and S. torpedo (Bell). 
I think it well at present to keep these two species distinct; the body colour 
of the former is blue, and olive-green in the form I identify as S. torpedo. 
The genus Minyas (type, JM. cyanea, Cuv.) is apparently very similar, but the 
column is tuberculated. The other genera associated with Minyas are Plotactig. 
M. Edw.; Nautactis, M. Edw.; and Oceanactis, Mos.: probably all Andres’ new 
generic names will lapse. 
Stichophora torpedo, Bell. 
Minyas torpedo, F. J. Bell, 1885, Journ. Linn. Soc. Zool. x1x., p. 114; 
Hadd. and Shackl., 1893, Proc. R. D.S., vut., p. 117. 
(Pl. XXIIL, figs. 29-33; Pl. XXX., figs. 5-11.) 
Form.—Body wall thin; column of varying extensibility, but never as long 
as greatest breadth, may be quite short; pedal disk swollen, secreting in the 
centre a vesicular, cuticular float; oral disk of less diameter than column; 
tentacles in two rows of 20 each, all very short and thick, the inner cycle larger 
than the outer, the latter being mere tubercles; mouth oval, with a well-marked 
gonidial groove. 
Colour.—Uniform olive-green. 
Dimensions.—Greatest diameter 17 mm. (under ? in.) 
Locality —F loating on the sea at the Murray Islands, February, 1889. 
Carlgren* has written a short and preliminary paper on a Minyad which is 
apparently identical with the above, or with S. Brandtii; assuming these species to 
be distinct, he gives only a diagrammatic figure illustrating the general dis- 
position of the mesenteries. The essential point of the mesenterial arrangement 
* O. Carlgren. ‘‘ Zur Kenntnis der Minyaden” Ofversigt af Kongl. Vetenskaps-Akad, Forhandl., 1894. 
Stockholm, p. 19. 
