The annals and magazine of natural history : zoology, botany, and geology . verselywhere it expands to cover thehydranth. The colour of thehydranth is pink, turning towhite at the tip of the hypo-stome. The tentacles aretranslucent white ; the coeno-sarc pink to scarlet. Gonosome.—The gonophoresare sporosacs. They are globu-lar and arise from the hydro-rhiza, to which they are at-tached by a slender are invested by achitinous covering which iscontinuous with the is a short blunt spadix,in the outer layer of which the gametes are matured. The gonophore resembles in s
The annals and magazine of natural history : zoology, botany, and geology . verselywhere it expands to cover thehydranth. The colour of thehydranth is pink, turning towhite at the tip of the hypo-stome. The tentacles aretranslucent white ; the coeno-sarc pink to scarlet. Gonosome.—The gonophoresare sporosacs. They are globu-lar and arise from the hydro-rhiza, to which they are at-tached by a slender are invested by achitinous covering which iscontinuous with the is a short blunt spadix,in the outer layer of which the gametes are matured. The gonophore resembles in structure that of Garveiawwfa/2Sj as figured by Allmau (Gyninoblastic Hydroids, 44). The colour of the gonophore is translucent white; thespadix is brick-red ; the gametes pink. Wrightia coccinea was taken by Wright at Inch Garvie,Firth of Forth, on the roots of Laminaria saccharina, and bythe writer at Hunterston Perch, near Fairlie, Firth of Clyde,in 12 fath., on Tuhularia, and in Castle Bay, Little Cumbrae,in 15-20 fath., also on Tuhularia. It is common where it. Wrightia coccinea. On the Generic Position of Bensons Helix hyba. 55 does occur. I obtaincl my specimens in May and June, andthey bore numerous gonophores. In studying Wriglida and the allied genera one cannot helpnoticing their resemblance to Calyptoblasts. The familyBougaiiivilliidse, to which they belong, is practically aloneamong Gymnoblastea in possessing a single verticil of filiformtentacles surrounding a conical hypostome. All the Calypto-blasts have this conical hy[)Ostome and single verticil offiliform tentacles. Further, many of the genera of Bougain-villiidoe have quite a distinct protective cup for the hydranth,resembling greatly the hydrothecaof theCalyptoblast. Indoed,were it not for the fact that these genera are classified withthe Gymnoblastea, their protective cups would receive thename of hydrothccge. Ihese facts point to the conclusion that a close relationshipexists between the family Boug
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