20 Proceedings of the Royal Society of Victoria. 



The ooecia of this species (C longicollis) I have in two distinct 

 forms. All my specimens, except one, show a form similar to 

 Fig. 14, which is drawn from the most perfect one. The ocecium 

 is adnate on a geminate pair, or rather triplet ; it is globose, 

 covered with tubercles, which are more raised on the periphery 

 than in the central portion. The zocecia are of the form of 

 Fig. 24, PI. II. (Monograph), and, in addition, the upper one has 

 two small tubular spines, very similar to some of the recent 

 Claviporellse. The other form (Fig. 15) is that of the variety 

 named by Dr. Macgillivray angusta. The ocecium is globose, 

 with an avicularium on its summit ; it is quite smooth, and there 

 are only two zocecia in the internode. There is a pore on each 

 side, a little below the thyrostome, in the lower or primary 

 zocecium. Now that the ocecium is found, and is so diflferent 

 from that of Fig. 14, I assign specific rank to this variety. 



Localities. — Clavipotrlla longicollis, Moorabool. (T. S. Hall). 

 CI. atigusta, Muddy Creek. (T. S. Hall). 



I have several specimens of ocecia of C. longicollis, but only 

 one of C. angusta. 



Calpidium mopningtoniensis, n. sp. (PI. II., 

 Figs. 17 and 18). 



Zocecium elongate, with five fenestra;. Lateral processes 

 narrow, flattened on the sides, with large conical avicularia in 

 the upper angles. Thyrostome arched above, with a curved, 

 i-aised extension of the outer peristome above and at the sides 

 similar to the hoods of C ornatuni and C. ponderosum, very 

 prominent at the sides, but not so fully developed at the top ; 

 inner peristome (thyrostome) slightly thickened. The lower lip 

 is broken away. 



Z(?m//V_y.— Balcombe Bay, Morningtou. (T. S. Hall). A 

 single specimen. 



This genus has not hitherto been found fossil. The lower 

 lip being broken, it is impossible to say if the tliyrostome is 

 chlithridiate, as it is in the two recent species. 



Fig. 18 is a sketch of as much of the side as could l)e seen by 

 tiltino- the slide. "" 



