352 ON A COLLECTION OF ECHIURIDS, WITH AX ATTEMPT TO 



Species 28. Thalassema sorbillans. Lampert. 



Lampert. Zeitschr. wiss. Zool. Vol. xxxix. 1883, p. 340. 



Length of body averages 44 cm. Length of proboscis, 21 cm. The body is markedly 

 pointed both behind and in front. 



Colour not mentioned. 



Papillae on the posterior end. Skin thin. 



Longitudinal muscles, 13 bundles. 



Nephridia, three pairs, with spirally twisted inner ends. The anterior pair open 

 in front of the ventral hooks. 



Anal trees, large and brown, with funnels clearly visible under the microscope. A 

 small diverticulum is present on the rectum. 



Locality. Philippines. 



Species 29. Thalassema stulrfmanni. Fischer. 



Fischer. Jahrb. Hamburg. Anstalt, ixth year, Pt. II. 1891, p. 82. 

 Fischer. Abh. Ver. Hamburg, Vol. XIII. 1895, p. 20. 



Length of body averages 2 cm. Length of proboscis, 0'5 cm. 



Colour, light grayish-brown. 



Papillae, larger posteriorly where they are most closely crowded together. 



Longitudinal muscles, 15 — 16 bundles. 



Nephridia, three pairs. 



Anal trees, half as long as body, with manifest funnels. 



Locality. Zanzibar, Bueni Riff; Pangani, Ras iluhesa. 



Species 30. Thalassema vegrande. Lampert. 



Lampert. Zeitschr. wiss. Zool. Vol. xxxix. 1883, p. 341. 

 Shipley. P. Zool. Soc. London, 1898, p. 472 



Length of body, 3*5 cm. Greatest diameter, 1"4 cm. Proboscis absent or possibly 

 lost, but no trace of its having existed is found. 



Colour unknown. 



Papillae scattered over the whole body, larger and more numerous posteriorly. 

 Skin very thin and papery. 



Longitudinal muscles, continuous. 



Nephridia, three pairs. All open behind the ventral hooks. Their internal openings 

 are spirally twisted. 



Anal trees, long, brown and thin, stated to be without funnels. (?) 



Locality. Philippines. Rotuma. 



