. Guide leaflet. FIG. 24—THE STOLON-BEARING SPONGE {Siphonochalina stolonifera Whitfield)A peculiar adaptation of the branching habit. Siphonochalina.—This is closely related to the precedinggenus, but consists of a group of tube-like individuals varyingin form, and with spongin of somewhat paper-like genus is represented by several species, of which Siphono-chalina stolonifera Whitfield is the most remarkable. This beau-tiful sponge is illustrated in the above cut of the type~ consists of a number of tubes with crown-like summits, growing [30]. [3i. *}. 25-—THE TRUMPET
. Guide leaflet. FIG. 24—THE STOLON-BEARING SPONGE {Siphonochalina stolonifera Whitfield)A peculiar adaptation of the branching habit. Siphonochalina.—This is closely related to the precedinggenus, but consists of a group of tube-like individuals varyingin form, and with spongin of somewhat paper-like genus is represented by several species, of which Siphono-chalina stolonifera Whitfield is the most remarkable. This beau-tiful sponge is illustrated in the above cut of the type~ consists of a number of tubes with crown-like summits, growing [30]. [3i. *}. 25-—THE TRUMPET SPONQE ( Tuba pliciftrn 246 THE AMERICAN MUSEUM JOURNAL from a common base, and connected with each other by root-likestolons, which form the attachments to the rocks on which theygrow. The texture of the skeleton is very fine and smooth. Tuba.—The genus Tuba is represented by two species and T. plicifera. These are more or less trumpet-shapedas the name implies. The specimen illustrated on page 245 isespecially fine. The Horny Sponges (order Monoceratida) includes the spongeswhose skeletons are entirely made of the spongin most typical and most important of these are the commercial
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectnatural, bookyear1901
