674 
DAVID H. TENNENT 
Series III. 
2 days. Multiple left anal rods, (type, fig. 14) 2 per cent. 
3 days. No anal arms, 1 per cent. 
No oral arms, 1 per cent. 
Multiple right anal rods, 1 per cent. 
Uncleft pre-oral region, 1 per cent. 
4 days. Slightly cleft pre-oral region, 5 per cent. 
5 days. Slightly cleft pre-oral region, 7 per cent. 
Series IV. 
2 days. Split left anal arm, 1 per cent. 
5 days. No oral arms, 5 per cent. 
Series V. 
2 days. 
3 days. 
4 days. 
Series VI. 
3 days. 
4 days. 
5 days. 
No right anal arms, 4 per cent. 
No left anal arms, 1 per cent. 
No oral arms, 3 per cent. 
Cleft left anal arm, 1 per cent. 
No anal arms, 1 per cent. 
No left anal arm, 1 per cent. 
No anal arms, 2 per cent. 
No oral arms, 3 per cent. 
No anal arms, 1 per cent. 
One oral arm, 1 per cent. 
Multiple anal rods, 2 per cent. 
Multiple oral rods, 1 per cent. 
Multiple anal rods, 1 per cent. 
Series VII (61 plutei). 
4 days. No anal arm, 1 pluteus. 
One anal arm, 1 pluteus. 
No oral arms, 4 plutei. 
