62 Mr. J. Y. Johnson on new 
The radiating series of connate or partially free uniserial 
tubular cells are of different lengths ; some begin at the centre 
and extend to the top of the vertical marginal wall, others 
are irregularly shorter. The innermost cells are very short, 
with oblique elliptical mouths, and some of them are free. 
The higher cells towards the margin have circular horizontal 
simple mouths. The walls of the cells and the spaces between 
them are transversely rugose. The margin of the zoarium 
rises steeply from the basal plate, and this boundary wall is 
entirely composed of the mouths of immersed cells to the 
number of four in a vertical series. Ocecia not observed. 
This species is common on shells from deep water. The 
longer axis of the largest specimen I have seen measures 
7 millim., excluding the basal plate, but the majority of my 
specimens are much smaller. In colour the younger ones are 
white, the older brownish. 
Diastopora pulchella, J. Y. Johnson. 
Cells distinct, erect, highest at the centre, gradually shorter 
towards the margin, which is low and thin; disposed quin- 
cuncially ; mouths round, horizontal, simple. No adven- 
titious tubules. Ocecia large, embracing several cells, in- 
flated, semiglobular, finely granular, and punctate. Zoarium 
white hyaline. 
The largest of my few specimens has a diameter of 
3°5 millim. Three of them in beautiful condition are inside 
the valve of a Lima; others are on seaweed. 
Lichenoporide. 
(Discoporellide, Bk.) 
Lichenopora spinata, J. Y. Jolinson. 
Zoarium circular, on a thin calcareous base, elevated, 
almost cylindrical, slightly concave at the centre. Cells 
distinct, uniserial, higher at the inner end, in radiating some- 
what irregular series, long and short, four to six in a series. 
Mouths with four or five spines. In the vertical exterior 
wall are seen the mouths of about six immersed cells piled 
one above another. Central area studded with numerous 
spines and pierced by circular or suboval pores, the latter 
round at one end, angular at the other, the larger pores often 
partially filled up within. Surface of central area finely 
granular and punctate. One or two spines project hori- 
zontally from the lower part of some of the inner cells. 
