1907.] FROM THE CAPE VlillDE ISLANDS. [53] 



PODOCORTXE ANECHINATA, sp. n. (Plate XXIII. figs. 8, 9, 10.) 



Sparsely scattered u] on a small ga.steropod shell (Ceriihium'i sp.) 

 are the niiniite individuals of a Podocoryne colony. The nutritive 

 individuals are club-.shaped, only 0-9 mm. in height, with a promi- 

 nent, cylindrical, fiat-topped hypo.stome, from beneath which arise 

 about nine tentacles, set in two closely a))j)roximated whorls. 

 Both spiral filaments aijd spines are absent. The reproductive 

 polyps, although they are somewhat smaller than the nutritive 

 witli about seven well-developed tentacles, resemble the latter in 

 shape, being also club-like and posse.ssing a )iromiuent cylindrical 

 hypostome. The basal expansion is formed of a single laver of 

 chitinous tubes, forming wide rectangular me.shes, the individual 

 tubes being almost O'l mm. in diameter, and l)eing marked late- 

 rally by minute honey-yellow dots, thickenings of the chitinous 

 wall. The whole expansion is covered by a thin layer of 

 cronosarc. 



Gonosome. — The sexual stage consists of free-swimming medu- 

 soids which arise in considerable numbers (as many as nine being 

 present on one individual) from the median portion of the repro- 

 ductive polyp. They are borne on well-defined peduncles. During 

 the earlier stages the tentacles appear as four blunt knobs, but 

 these develop considerably ere the medusoid is set free. Sexual 

 products could not be distinguished in the medusoid buds. 



The species here described is a near relative of P. hmnilis 

 Hartlaub 1905. The latter form, however, dift'ors in posse.ssing 

 a minute conical hypostome, small smooth spines, and a medusoid 

 bud which is not mentioned as developing well-formed tentacles 

 ere it is set free. Tlie difierence in the number of tentacles is of 

 little importance, although it is to be note<l that here they foi-ni 

 two closely-set whorls, but the chitinous thickenings which occur 

 along the sides of the rhizom stiands {ride PL XXIfl. fig. 10) 

 mav help to distinguish the present species. 



Locality. Porto Prava. Santiago, Cape Ycrde Islands, 5 fathoms; 

 9th August, 1904. 



Family E u D E X D n 1 1 D .t:. 



EUDENDRIUM KAMOSUM LinnaMis 1758. 



A single, small, unfasciclcd colony .about 4 cm. high. The 

 branches and branchlets are strictly alternate, and the minute 

 structure, except that the rings at the bases of the main branches 

 are generally fewer in numlier, agrees closely with Hincks's figures 

 (1868, pi. 13). The hydranths are well preserved and there were, 

 in the examples counted, 23 or 24 tentacles surrounding a very 

 distinct trumpet-shaped hypostome. 



Gonophores not present. 



Locality. Porto Praya, Santiago, 10 fathoms; 12th August, 

 1904. 



499 



