162 ARTHUR WILLEY. 
pecting that the single specimen examined by Sluiter was 
merely an individual abnormality.” 
I venture to hope that I have found the solution to this 
enigma in the species about to be described. 
ae 
eS 
LG 
Ne 
Fie. 12.—Group of seven individuals of Styeloides eviscerans, n. sp. 
represented as lying attached to the surface of a fragment of stone. In the 
large individual to the right the digestive tract is indicated in process of 
extrusion through the atrial aperture. a. Anus with frilled margin. 7. In- 
h, Foreign organisms attached 
testine. 47.s. Branchial sac. e. Endostyle. 
to test. 
