1907.] FROM THE CAPE VERDE ISLANDS. 499 



PODOCORYNE ANECHmATA, sp. n, (Plate XXIII. figs. 8, 9, 10.) 



Sparsely scattered upon a small gasteropod sholl [Ceritkimn^ sp.) 

 are the minute individuals of a Podocoryne colony. The nutritive 

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

 nent, cylindrical, flat -topped hypostome, fi-om beneath which arise 

 about nine tentacles, set in two closely approximated whorls. 

 Both spiral filaments and spines are absent. The reproductive 

 polyps, although they are somewhat smaller than the nutritive 

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

 shape, being also club -like and possessing a prominent cylindi'ical 

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

 chitinous tubes, forming wide rectangular meshes, the individual 

 tubes being almost 0"1 mm. in diameter, and being marked late- 

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

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

 coenosarc. 



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 i"elative of P. humilis 

 Hartlaub 1905. The latter form, however, difiers in possessing 

 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. The difierence in the number of tentacles is of 

 little importance, although it is to be noted that here they form 

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

 along the sides of the rhizom strands (vide PI. XXIII. fig. 10) 

 may help to distinguish the present species. 



Locality/. Porto Praya, Santiago, Cape Verde Islands, 5 fathoms; 

 9th August, 1904. 



Family Eudendriid.e. 



EuDENDRiUM RAMosuM Linufeus 1758. 



A single, small, unfascicled 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 number, 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. 



