76 ME. E. A. WALF0ED ON BKTOZOA FBOM [Feb. 1 894, 



Var. a.— VI. II. fig. 5. 

 Young, amphora-shaped. 



Zooecia : upper lip arched, with pore, recessed ovoid aperture, 

 lower labial pore, short side-processes, sessile mural avicularium, 

 Ovicell supra-oral, proceeding from the back of the zocecium. 

 Ovicell-sacs not known. Upon the front wall of certain zooecia is 

 traced a large scar. 



Peegensia jugata, sp. nov. (PI. II. figs. 9, 10 ; PI. IV. figs. 6-13, 

 18-21.) 



Zoarial length 5*0 mm., zoarial width 1*0 mm. ; zooecial width 

 0*12 to 0'15 mm.; mouth O06 mm. 



Zoarium dumb-bell shaped, axial tube protruding at each end. 

 Zooecia diverging from the constricted central part in apparently 

 linear series or in spiral, often irregular lines (PI. II. figs. 9, 10). 



Zooecia tubular, tapering, or compressed, some placed sideways 

 upon the zoarium, frequently with long exsert parts : (1) PI. IV. 

 figs. 7, 10, 11, conoidal, compressed, placed sideways upon the 

 zoarium, front having a long transverse opening below and other 

 openings above, with tubules ; summit open, with tubules : (2) PL IV. 

 fig. 12, compressed, mouth ovoid, with lobed superior and ovoid in- 

 ferior openings ; ovicell at the back : (3) PI. IV. fig. 9, mouth ovately 

 triangular ; upper lip arched, with pore, lower lip straight, with 

 pore. Clusters of tubuli occur between the zooecia (PI. IV. fig. 6). 



Ovicell-sacs (PI. IV. figs. 8, 20) common, inflations of the zoarial 

 surface or cells, enveloping several zooecia, generally glohose : upper 

 surface often flat, the whole pierced and slashed with zooecial and 

 other openings. 



Zoarial surface punctate with protruding pores, wrinlded where 

 the zooecia are few, the whole covered by an outer film pierced with 

 fine pores. 



The longitudinal section (PI. II. fig. 10) illustrates the divergent 

 growth of the zooecia from the central part and around the axial 

 tube. In the piriform central cell at the base are numerous reddish- 

 brown, globular, crystalline bodies (PI. IV. fig. 19). The axial tube 

 also contains some reddish-brown crystals. Sections cut partly 

 through and viewed as opaque objects are great aids in zooecial study, 

 and illustrate well the mode of growth (PI. IV. fig. 21). Some 

 details can often be seen by staining the specimen. 



Peegensia jtjgata, var. bi-gibbosa, nov. (PI. II. fig. 11 ; PL IV. 

 figs. 14, 15.) 



Same form as P. jugata, with slightly stouter zooecia. Primary 

 aperture coarctate (Pi. IV. fig. 14) with ovoid peristomial aperture ; 

 avicularium on the side of the zocecium : ovicell-sacs cordate, or 

 in the form of irregular cells or swellings (PL IV. fig. 15). 



Peegensia galeata, sp. nov. (PL III. figs. 19, 20, 25-33.) 



Zoarial width 1-3 mm. ; zooecial length 1*0 mm., zooecial width 

 0-1 mm. j mouth 0*09 mm. 



