. Bulletin - United States National Museum. Science. BRYOZOA OF THE PHILIPPINE REGION 129 VELUMELLA PHILIPPINESIS, new species Plate 13, figs. 1-4 Description.—The zoarium encrusts shells. The zooecia are dis- tinct, united by their mural rim, elongated, rectangular; the mural rim is thick, salient, flat, with sharp or fringed termen; the cryptocyst is deep, somewhat concave, raised toward the opesium, smooth or sometimes granulated. The opesium is semielliptical, very little elongated; the proximal border is very little convex and bears two small lateral symmetrical and very regular indentati
. Bulletin - United States National Museum. Science. BRYOZOA OF THE PHILIPPINE REGION 129 VELUMELLA PHILIPPINESIS, new species Plate 13, figs. 1-4 Description.—The zoarium encrusts shells. The zooecia are dis- tinct, united by their mural rim, elongated, rectangular; the mural rim is thick, salient, flat, with sharp or fringed termen; the cryptocyst is deep, somewhat concave, raised toward the opesium, smooth or sometimes granulated. The opesium is semielliptical, very little elongated; the proximal border is very little convex and bears two small lateral symmetrical and very regular indentations. The ovicell is endozooecial. The onychocellarium is primoserial, as large as a rx r\ ^ D E F C G H Fig. 31.— VelumeUa philippinensis, new species, and also other species A. Mandible of onychocellarium, X 85. B. Much chitinized operculum, X 85. Around each opercular valve there is a chitinous peristome supported on the zooecial mural rim. C. Opercular valve, nonchitinized, X85. D, E. Dacry- onella trapezoides, new species. Large and small opercular valves, X85. F. Micropora rimulata, new species. Operculum, X85. G, H. Cupularia umbellata DeFrance, 1823. G. Seta of vibraculum, X85. H. Opercular valve, X85. zooecium; its beak is narrow or rounded; its opesium is median, oval, with the point below. Measurements.— Opesium jho = mm. Zooecia fZ2 = mm. (small zooecia) [lo = mm. (small) \lz = mm. Opesium J^o = mm. Zooecia[Z2 = (large zooecia)lZo = mm. (large) \lz = mm. Opesium of fTio = Onychocel-[Zon = mm. onychocellarium 1^2 = mm. larium jZ<m = mm. Structure.—The opercular valve is bordered by a sclerite which fits into an exterior sclerite attached to the ectocyst. It is absolutely similar to that in Onychocella. It is sometimes strongly chitinized and has the opaque aspect of our Figure 2. The rachis of the onychocellarium is bordered inferiority by a double sclerite; the interior sclerite
Size: 1510px × 1654px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorun, bookcentury1800, bookdecade1870, booksubjectscience