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oponings in the margin of the gonozoo'ciuni lead directly into the two pore- 

 chanihers, the inner wail of which has fi— 8 small, single-pored roselte-piales. 

 As a spine is never separated from the appertaining zooeciuni hy any sophim 

 furnished with rosette-plates, such heing only found on the houndary hetween 

 two bryozoids (or in a terminal zoa-cium), we must set down llie two on'cial valves 

 as kenozo(rcia, and the absence of the two spines is sufhciently explained by the 

 fact, that the two valves leave absolutely no room for them. We have already 

 on a former occasion called atlcnlion lo the fad thai a zoa-cium which is only 

 connected with a single daughter-zoa-cium has only a single pore-cliami)er (3 c), 

 and that the number of pore-chambers answers to the num})er of daughler-zooe- 

 cia. The gonozott'cium with its oa'cium will accordingly correspond with a motlier- 

 zooecium bearing two daughter-zoa'cia and otherwise as we shall see later on, 

 three daughter-zooecia only occur on the lowest or the two lowest axial zocecia 

 of the colony (3 a). The chitinous connection between the gonozo(i>cium and 

 its two valves is also in accordance with what we know from the other indi- 

 viduals of the colony. 



The colonies form fine feathery tufts and take their origin from a system of 

 branched, chitinous tubes covering various algse. Besides the oo-cia-bearing 

 branches we may in a colony distinguish between zooecia of first, second and 

 third order. The zoa?cia of the first order or the axial zooecia form a slightly 

 bent zigzag row, and in every zooecium llie broad, cliitinizcd piece connecting it 

 with the distally situated zooecium is alternately on the right or the left side of 

 the longitudinal axis of the zoa'cium, on the same side as the larger opesiular 

 opening. On the other side is the much narrower connecting belt with the obli- 

 quely, distally directed zooecia of the second order, and from each of these two 

 rows of zooecia of the third order may issue. In each row there may be from 

 two to four zocjecia. The axial zoa-cia are longer than the others, tbc semi-ellipti- 

 cal ridge more angular, the two opesiulae of less unequal size and the two horns 

 less i)ointed and bent inwards a little. The principal difference in the zooecia of 

 the second order and those of the third order is that the two horns of the former 

 are bent inwards as in the axial zooecia. The lowest axial zodcium has most 

 fre(piently a branch on either side, as is also the case now and then in the low- 

 est but one. In a number of the lower axial zofpcia radical fibres proceed from 

 the proximal half of the frontal surface. 



Of this species I have been able to examine a large number of dry colonies 

 from South Africa (Miss Jelly). 



