BULLETIN : MUSEUM OF COMPARATIVE ZOOLOGY. 
An eetosolenian form, that Brady has referred to the entosolenian 
L. aspera of Reuss. It is seldom met with in the tropics. 
Pacific. 1201 fathoms; rare. 
L. gracillima SrevENZA. 
L. gracillima Sge., 1862, For. miocün. monotal. Messina, p. 51, Pl. 1, Fig. 37. 
L. gracillima Br., 1884, Chall. Rep., IX. p. 456, Pl. LVI. Figs. 19-28. 
L. gracillima Goiis, 1891, Arct. & Scand. Foramf., Sv. Vet. Ak. Hdl., XXV. 9, 
p. 75, Pl. XIII. Figs. 728-730. 
This form is not seldom met with even in tropical seas, usually associated 
with its striated'allied form, L. distoma PARK. & JONES. 
Pacific. 782-1132 fathoms ; not scarce, 
Caribbean Sea, 420 fathoms; rare. 
L. striata DORs., forma perlucida Montag. 
Vermiculum perlucidum Monraau, 1808, Test. Brit., p. 525, Pl. XIV. Fig. 3. 
L. sulcata Br., 1884 (partly), Chall. Rep., IX. p. 462, Pl. LVII. Figs. 23, 26. 
L. striata f. costata Gos, 1804, Arct. & Scand. Foramf., Sv. Vet. Ak. Hdl., aos V « 0, 
p. 76, Pl. XIII. Fig. 786. 
This eetosolenian form has often been assigned to L. sulcata WALK. & Jac. 
but that species should be ranked in the entosolenian group. It is not com- 
monly met with in the seas of the tropics. 
Pacific. 1132 fathoms ; rare, 
L. marginata Wark.& Bors. 
Serpula marginata Warn, € Borys., 1784, Test. Min,, p. 2, Pl. I. Fig. 7. 
L. marginata BR., 1884, Chall. Rep., IX. p. 476, Pl. LIX. Figs. 21-28. 
L. marginata. Gots, 1894, Arct. & Scand. Foramf., Sv. Vet. Ak. Hdl., XXV. 9, p. 81, 
Pl. XVIII. Figs. 748-751. 
L. marginata assumes in tropical seas relatively immense proportions in 
growth, while it is often associated with pygmy forms. The margin is some- 
times carinate or winged. Brady has presented good figures of such stout forms 
upon which, many rhizopodologists should perhaps be prone to confer a special 
denomination. A. variety with a few spines on the bottom margin is sometimes 
met with. It has received a special name by Schwager (Fissurina staphyllearia, 
1866, For. Kar Nikob., Novara Reise, II. Pl. V. Fig. 24). 
Pacific. 695-1201 fathoms ; not rare. 
Caribbean Sea. 382-1920 fathoms ; not rare. 
L. Orbignyana Sra. var. elongata. 
This form deviates from that of Seguenza in being flask-shaped instead of 
o o 
having a circular contour, Brady has designed such a form between the cir- 
5 p o 
cular ones in the Challeng. Rep., IX. Pl. LIX. Fig. 26. 
Pacific. 1132-1201 fathoms ; not common. 
