276 DISCOVERY REPORTS 



Adocia cucurbitiformis (Kirkpatrick). 



Gellius cucurbitiformis, Kirkpatrick, 1907, p. 288; id., 1908, p. 48, pi. xvii, fig. 5, pi. xxiv, fig. 5. 

 Occurrence. St. 180: Palmer Archipelago, 160-330 m. 

 Distribution. Victoria Land. 



Adocia tremulus (Topsent). 



Gellius tremulus, Topsent, 1916, p. 171 ; /(/., 1917, p. 79, pi. i, fig. 7, pi. vi, fig. 20. 

 Occurrence. St. 175 : South Shetlands, 200 m. 



Remarks. The specimen is quite typical except that no raphides are present. 

 Distribution. Graham Land. 



Adocia tenellus (Topsent). 



Gellius tenellus, Topsent, 1916, p. 171 ; id., 1917, p. 80, pi. vi, fig. 23. 



Occurrence. St. WS 88: Falkland Islands, 96-127 m. 



Remarks. There is a doubt about the locality in this case so that it would be in- 

 advisable to say much concerning the bearing that this specimen may have on the 

 value of the species or its distribution. The specimen itself is massive, with spicules of 

 the same shape and dimensions as those of the holotype of Gellius tenellus, and the 

 skeleton is a unispicular network throughout. 



Distribution. Petermann Islands. 



"Gellius fibulatus." 



Occurrence. St. WS 82: Falkland Islands, 140-144 m. 



Remarks. The specimen recorded under this title is a small massive sponge, of a very 

 friable texture, which reached me in a fragmentary and slightly macerated condition. 

 It appears to belong to Adocia, but of this it is impossible to be sure. The skeleton is a 

 unispicular, occasionally bispicular, network of oxea measuring 0-12 by o-oo8 mm., 

 slightly curved and gradually and evenly pointed towards each end. The sigmata are of 

 the usual type and measure up to 0-05 mm. chord. 



Renter a fibulatus, Schmidt (= Gellius fibulatus, Autt.), is a species of which we know 

 nothing with certainty. The holotype has not been seen since Schmidt first described 

 it, and the original description is hopelessly inadequate. All we know is that its skeleton 

 was composed of oxea and sigmata, but the sizes of these respective spicules are un- 

 known. Since Schinidt first established the species, it has been used by succeeding 

 authors for almost any sponge possessing small oxea and sigmata, so that, in the con- 

 ventional sense, the present sponge belongs to Schmidt's species. 



The only reason for recording such a poorly preserved specimen is that it is from a 

 locality from which we have very few records and there is just the hope that, when the 

 so-called species " Gellius fibulatus" has been correctly split into its component parts, 

 we may be able to determine this particular specimen with certainty. 



