285 
H. coniorta Markt. 1 ) (PI. V, fi gs . 16, 17) and Lafoea venusta 
Allm.-). Such large singly placed gonothecae have also been found 
in two species of the genus Cryptolaria , namely in Cr. cibyssicola 
Allm. ) and Cr. diffusa Allra. 3 ), while two other species, Cr. lon- 
githeca Allm. 4 ) and Cr. conferta Allm. 3 ) have a Coppinia. Nut- 
)? howevei, asciibes to the whole genus Cryptolaria “a com- 
pact Coppinia mass much as in Lafoea and the reason hereof is 
the folio wing. Pietet and Bedot 6 ) have found in Perisiphonia 
pectinata a Coppinia surrounding a portion of the stem and, be- 
sides, two small singly placed gonothecae, seated each in the 
proximal part of an adjacent branch. As Nutting 7 ) and Broeh 8 ) 
have found that the Coppiniæ, examined by them, contain gonothecae 
of both sexes, Bedot suggests that the single gonothecae found 
in the named Perisiphonia may represent a different sex from those 
in the Coppinia, and Nutting, therefore, no doubt, compares the 
single gonothecae found in the above Cryptolaria-species with 
those found in the Perisiphonia, and thinks that a coppinia may 
appear later. I do not think, however, that Bedot is right in 
his supposition. It is a well-known faet that a Coppinia may often 
J ) 86. Pietet (46) regards Rebella cylindrata Markt., H. contorta 
Markt., and R. scandens Bale as identical with R. cylindrica v. Lend.. 
and Billard thinks that the same is the case with H. calcarata 
Ag., but be adds the following remark: “Comme Pietet le fait juste- 
ment remarquer on ne pourra étre complétement fixe sur l’identité 
de toutes ces formes que lorsqu’on aura trouvé et comparé leurs 
gonosomes (11, p. 17). The gonothecae of H. contorta seem to be 
very different from those of H. calcarata and H. cylindrica, tig*ured 
by Agassiz and Pietet. Their (PI. Y, figs. 16, 17) distal end is 
divided into 4 6 triangular areas, which no doubt correspond to as 
many opercular valves. The gonothecae of H. scandens Bale (8, pi. 
XIII, fig. 18) seem to show a similar structure. 
2 ) 3 . 
3 ) 5. 
4 ) 15 a. 
6 ) 45, p. 946. 
6 ) 47, p. 21, pi. Y. 
7 ) 45 a. 
8 ) 18, p. 155. 
