,50 MRS. LKONOKA J. WILSMORE ON SOME 



Gonads (PI. 5. fig. 13, ^5.). — The specimen was a female. The gonads, 

 which were carried by the six pairs o£ perfect mesenteries, almost filled the 

 coelenteron. Transversely they extended from the oesophagns to the body- 

 wall, passing into the spaces between the imperfect mesenteries, longi- 

 tudinally, from the level of the mouth to a little above the pedal disc. The 

 immense number of ova present were in different stages of growth. 



Phellia capitata. (Pis. 5, 6. figs. 14-19.) 



Form (PI. 5. fig- 14). — Single, fixed ; capitulum slightly swollen ; base 

 much broader, there being a gradual increase from the centre of the column 

 to the pedal disc, which expands broadly beyond the column-wall ; surface 

 of the scapus irregularly pitted and gritty with fine sand ; on the capitulum 

 the sand very sparse and the irregularities of the surface arranged in deep 

 transverse grooves ; the greater part of the capitulum and the scapus 

 beneath the sand-grains covered with thick yellow mucus, in which small 

 objects are embedded ; the small distal portion of the capitulum delicate, 

 free from mucus and sand, quite smooth and light sand-coloured. In the 

 specimen examined this portion pressed outwards forms a ridge protruding- 

 round the anterior end of the polyp between the transverse grooves of the 

 lower capitulum and the expanded tentacles (PI. 6. figs. 15, 16, 19, d.cap.). 

 Tentacles (PI. 5. fig. 14, PI. 6. figs. 15, IG) short, slightly annulated, in two 

 cycles, the inner the larger ; .39 present, and a space about equal to one-eighth 

 the circumference of the disc, which is devoid of tentacles, has several minute 

 buds at long intervals. The oesophagus is extruded together with masses of 

 the o-onads (PI. 5. fig- 14, a's.,gs.); owing to the attachment of the perfect 

 mesenteries to the inner wall of the ossophagus this organ is slightly lobed in 

 extension ; its lower border is deeply grooved transversely. There is no 

 indication of a siphonoglyphe. 



Colour. — Brown in spirit, owing to minute dark brown pigment spots 

 which cover the surface to the edge of the light-coloured naked distal parts 

 of capitulum. 



Dimensions. — Height 13 mm. ; average diameter 5 mm., diameter at pedal 

 disc 9 mm. 



Locality. — Collected by Professor Hill in 1894 ; on the Pacific Ocean 

 beach opposite Creel Bay, Broken Bay, New South Wales. 



This species is named Phellia capitata on account of the peculiar swollen 

 heads of the longitudinal retractor muscles of the mesenteries. 



Column-wall (PL 6. figs. 15, 17). — The column-wall, narrow below, owes 

 its greater width distally to the inclusion of a wide mesoglcBal sphincter 

 (PL 6. fig. 15, spli.\ Its surface is very irregular, but the sand-grains with 

 which it is covered do not penetrate into the deeper indentations. They 

 adhere chiefly to the surface of the yellow abundant mucus, and are 



