397 



Fig. 380. Chrysymenia 

 Enteromorpha Harv. 

 (about natural size). 



The tetrasporangia are produced in the cortical layer and 

 occur scattered over the whole thallus. They are about 20 p broad 

 and cruciately divided (Fig. 379). KUCKUCK gives (1. c., p. 223) 

 a transverse section of the wall with 

 tetrasporangia. 



The cystocarps are likewise found 

 scattered over the surface of the 

 thallus; they are hemispherical pro- 

 minent and have an apical porus. 

 Tetrasporangia and cystocarps oc- 

 curred in the month of March. 



At the islands this species has 

 been found in deep sea only (about 

 12 15 fathoms); according to BER- 

 THOLD*) and KUCKUCK (1. c., p. 218 

 -19) it occurs too in shallow water 

 in the Mediterranean Sea. But it is 

 also found there in deeper water, 

 and RODRIGUEZ**) found it even at a 

 depth of 130 m at the Baleares. 



St. Jan: In many places in the sound between this island and St. Tho- 

 mas and in the sea to the north of St. Jan. 



Geogr. Distrib.: Mediterranean Sea, Morocco. 



4. Chrysymenia Enteromorpha Harvey. 



HARVEY, Nereis Bor.-Americana, Part II, p. 187. F. BORGESEN, 

 W. I. Floridea?, II, p. 185. J. AGARDH, Epicrisis, p. 325. 



Of this fine plant (Fig. 380) I have found a few specimens 

 in deep water. They .reached a length of more than ten cms (in 

 the biggest specimen collected the basal part was absent). As des- 

 cribed by HARVEY, the plant, to begin with, consists of a single sac- 

 cate oblong frond, two three cms. long which at its base tapers 

 into a short stalk ending in a small disc, by means of which the 

 plant is fastened to the substratum. From this primary sac similar, 

 often narrower and longer, secondary sacs are issued in all direc- 

 tions, and these are again ramified in the same way and so on 



*) BERTHOLD, G., Uber die Vertheilung der Algen in Golf von Neapel etc., 

 p. 526. 

 **) RODRIGUEZ, J., Algas de las Baleares, p. 254. 



