10 



Annals of the South African Museum. 



features are characteristic of the late growth phases of the crotchets 

 of Arenicola. The crotchets (Text-Fig. II., B) of one of the Saldanha 

 specimens were also examined and compared directly with those of 

 the type specimen with which they closely agree, the only difference 

 being that, in the former, the angle between the rostrum and shaft 

 is a little wider. 



It is so constantly the case in all species of Arenicola, that the 

 crotchets present in the same neuropodiurn are practically uniform 



5. x HO 

 TEXT-FIGUEE II. 



Arenicola loveni. Two neuropodial crotchets, A from the type specimen, B from a 



Saldanha specimen, x 110. 



in build, that the occurrence of an instance to the contrary is worthy 

 of note. In the fifteenth neuropodiurn of one of the Saldanha speci- 

 mens there are 115 crotchets, among which is one differing from 

 the rest in its more slender form ; it is of the same length and 

 curvature as its fellows, but is only about 28 yu in diameter in the 

 middle of its shaft, whereas the corresponding portion of the neigh- 



