1907.] PROM THE CAPE VERDE ISLANDS. 493 



rings ; the remainder, which varies much in length, being smooth 

 or A^ery slightly crumpled. 



The gonosomes, which are present in numbers, agree exactly 

 with AUman's description. 



The colonies here described agree in all but size with beautifully 

 preserved specimens of the species from the Naples Biological 

 Station. 



Locality. St. Vincent, Cape Yerde Islands. Obtained from 

 bottom of a lighter, 30th July, 1904; by diving among coral in 

 2 fathoms of water, 22nd July, 1904; also fine colony in tidal 

 pool, 25th July, 1904. 



Family Tubulariid^b. 

 TuBULARiA HUMiLis Allman 1864. 



A few simple or slightly branched stems varying from 0*5 to 

 4 cm. in height, and 0*5 mm. in diameter, may be referred to this 

 species. The specimens obtained in one dredging are much smaller 

 than those described by Allman, varying from 5 to 12 mm. in 

 height ; but the following points have been relied on in identifi- 

 cation : — simple or slightly branched stems with, here and there, 

 faintly marked transverse rugosities ; delicate, light-yellowj)erisarc; 

 a ccenosarcal collar supporting the hydranth ; small hydranths, 

 1"2 mm. in height, longer than broad, with, in the individuals 

 examined, 17, 13, 11 tentacles in the distal whorl, and 19, 17 in 

 the proximal. The tentacles are iti a state of contraction, and 

 consequently the proximal whorl is only I'S mm. in diameter from 

 tip to tip. 



Gonosome. — In the specimens obtained on the 30th of July 

 gonophores are present in erect clusters borne on short pedicels. 

 In some of the more mature, actinulse can be seen. 



Locality. St. Vincent, Cape Verde Islands. Found gi'owing on 

 the bottom of a lighter on 20th and 30th July, 1904, and by diving 

 among coral in 2 fathoms of water on 22nd July, 1904. 



TuBULARiA SOLITARIA Warren 1906. 



A few solitary individuals, 8 mm. in height, are growing upon 

 a sponge-like layer encrusting a small lamellibranch shell. The 

 individuals are fixed in the layer by a club-like, sometimes branched 

 " root," and are crowned by a distal circle of stout tentacles 13 or 

 14 in number, the lower portions of which are adnate to the 

 hypostome, appearing as strong ridges upon it. The proximal 

 tentacles, which are more slender than the distal, arise from the 

 broadened base of the hydranth in a whorl of about 30, rather 

 more than in Dr. Warren's specimens. Otherwise, the present 

 specimens, with delicate perisarc, distinct endodermal canals in 

 the hydrocaulus, erect blastostyles originating just within the 

 proximal whorl of tentacles and bearing from two to five or six 

 gonophores, agree with the description of the type. 



The gonophores in our specimens are mostly at an early stage, 



