306 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 3 



ering the subcortical layer but more or less arranged in such a way as to 

 leave the middle of the larger inner cells uncovered ; gland cells borne oc- 

 casionally in groups of 4-8 on the middle of the inner face of the large 

 cells next to the cavity of the vesicle, pyriform, about 20 [x long; cysto- 

 carps sparsely scattered over the surface of the vesicle, smooth, hemi- 

 spherical, 600 fi broad, 300 /x high, with a small pore 50 /x in diam. 



Type : D. 561, dredged in 20-40 meters, Agua Verde Bay, Feb. 12, 

 1940. Herb. AHF no. 48. 



This species is in many respects similar to the West Indian Chrysy- 

 menia Enteromorpha, from which it differs in possessing a solid, branched 

 axis, in the less proliferous branching of the vesicles, and in the smooth, 

 hemispherical nature of the cystocarps. 



Botryocladia uvarioides sp. nov. 

 Plate 45, Figs. 8-10; Plate 75, Fig. 1 



Frondes usque ad 22 cm. altae, axi primaria, tereti, solida, ramis lateralibus 

 copiosis sphericis, dense collocatis, saccatis, prorsus totaliter axes investientibus, 

 compositae; vesiculis 2-3 mm. diam.; cellulis glanduliformibus, singillatim aut 

 paucitatibus conglobatis, 10 n, diam. 



Attachment organs unknown ; plants up to 22 cm. high, consisting of 

 a sparingly branched, solid, terete main axis with abundant, close-set lat- 

 eral, spherical saccate branches almost completely covering the solid axis 

 throughout its length; spherical vesicles usually 2-3 mm. in diam., con- 

 sisting of a 3-layered wall enclosing the cavity; the innermost of large, 

 roundish cells 50-90 /x diam.; the subcortex of cells 12-18 \x. diam.; the 

 outer cortical layer of small cells 4-6 ju, diam.; gland cells fairly infre- 

 quent, often occurring singly on the inner surface of the large inner cells, 

 or, when there are two, these not usually attached close together, not un- 

 commonly in groups of 3-5 arising from smaller cells of the inner layer^ 

 small, 10 /i, with a slender attachment; reproduction unknown. 



Type: H. 727 & 598 (Calif. Acad, of Sciences; isotype, AHF no. 

 49), dredged from 40 meters off San Jose del Cabo, August 4, 1932. 



H. 45, dredged in 40 meters, San Lucas Bay, Aug. 4, 1932. 



In some instances the gland cells arise from peculiar stellate cells re- 

 sembling those which B0rgesen figures for Coelarthrum Albertisii (1914, 

 pp. 405-406, figs. 390, 391). 



This species corresponds in size and general appearance with Botryo- 

 cladia occidentalis (B0rg.) Kylin, but differs in the nature of the gland 

 cells and in the close-set arrangement of the spherical vesicles. B. uvaria 

 seems to represent a widespread semitropical type, geographic species or 



