40 A. E. Verrill — Additions to the Fauna of the Bermudas. 



The anus is a conspicuous transverse slit, on a slightly raised or 

 thickened brownish area, covered with radial grooves. The nephri- 

 dial pores are very distinctly transversely bilabiate ; they are sepa- 

 rated by about seven longitudinal miiscular bands, and are situated 

 on the eighth muscular band in front of the anal pore. 



The color in life is brownish flesh-color, or light yellowish brown. 

 In formalin it is dull, pale yellowish brown, a little darker on the 

 posterior end and at the base of the proboscis, as well as around the 

 anal pore ; the surface has a glistening appearance. 



One specimen is somewhat darker, being covered with fine dark 

 brown specks, which form alternately lighter and darker, very 

 narrow stripes on the body, two narrow dark lines being situated on 

 each longitudinal muscular band. 



The internal anatomy has not yet been studied sufiiciently to 

 determine positively whether this be identical with the European 

 S. nudus, which has been reported also from Florida. 



Sand flats of Long Bird Island, in deep burrows, April, 1901. 



Physcosoma, sp. 



A large species, 150 to iTo"^'" long, and about 8 to 10™'^ in diame- 

 ter, when expanded. 



It Avas translucent flesh-color, finely specked with yellowish brown. 

 The two long and large segmental organs showed through the integ- 

 ument as purplish folded tubes 20 to 30"^™ long. 



There are 20 wide muscular bands ; scA^en on each side between 

 the anal and nephridial pores and six between the two latter. The 

 surface is covered with fine granule-like elevations ; around the 

 posterior end is a wide zone of larger, crowded, low, yellow, rounded 

 verrucse, not chitinous ; a similar zone surrounds the base of the 

 proboscis. On the inner surface of the longitudinal muscles are 

 scattered, oblong, low, verruciform bodies, about .5""' long. The 

 intestine is long and large, forming about 45 spiral turns. The 

 transverse muscles form thin narrow bands or lines, very near 

 together. 



Thalassema Baronii Greef. 



Thalassema Baronii Greef, Acta Ac. Germ., xli, p. 151, 1879. Shipley in 

 Willey's Zobl. Eesults, part iii, p. 745, pi. xxxiii, figs. 1 and 7, 1899 ; Proc. 

 Zool. Soc. Loudon, 1899, p. 55. Selenka, Challenger Voy., Zool., xiii, p. 1. 



Plate V. Figure 9. 



rLmm 



Length, in life, in extension, 50 to 65"'", diameter 12 to 15' 

 but the form is verv chanoeable. The color of the bodv was bluish- 



