. Annotationes zoologicae japonenses / Nihon do?butsugaku iho?. 82 HLSAÏO KUWANO. cmj of thein are confluent1, on each side, to a common gill cavity which discharges to the exterior by a common gill-pore2 (Fig. 3, cgp.) ; epithelium of the outer surface of the gill tongues is infolded into the tongue cavity ; synapticula on each side of a tongue-bar is 15-17 in number ; the respiratory and nutritive portions of the oesopha- gus are nearly equal in size ; gonads coextensive with the genital pleurae ; secondary gonads well developed ; postbranchial canal is directly continuous with the respirato
. Annotationes zoologicae japonenses / Nihon do?butsugaku iho?. 82 HLSAÏO KUWANO. cmj of thein are confluent1, on each side, to a common gill cavity which discharges to the exterior by a common gill-pore2 (Fig. 3, cgp.) ; epithelium of the outer surface of the gill tongues is infolded into the tongue cavity ; synapticula on each side of a tongue-bar is 15-17 in number ; the respiratory and nutritive portions of the oesopha- gus are nearly equal in size ; gonads coextensive with the genital pleurae ; secondary gonads well developed ; postbranchial canal is directly continuous with the respiratory por- tion of the oesophagus and its ante- rior end carries the last pairs of the gill-slits8; the proximal origin of the lateral septa passes abruptly over the wall of the postbranchial canal from the gut wall and thence, the origin is again transferred on the epidermis to terminate on with the both origin and the insertion ; in the hepatic region4, the epidermis makes inteisaccular involutions in a remarkable manner5, ciliated Pig 4 grooves are paired and confined into Transverse section through the anal region to the hepatO-abdotuilial region J the *how the circular muscle fibres going rounil the gut waii. grooves appear in their typical form cm/, circular muscle fibres, gc. gut cavity, Imf. . longitudinal muscle fibres, peli, pygochord. Only 111 the hepatlC reglOll, while 1. ) In Glossobalanus hedleyi, the most anterior two are confluent (Hill, 1898, p. 341). 2. ) As far as its situation concerns, the common gill-pores correspond into the most anterior pairs of the gill-pores in other species. 3. ) Though this structure was described in some of the genera Ptychodera Eschscholtz and Glossobalanus Spengel, in the member of the genus Balano ylossas Delle chiaje, it was first recorded by Willey only in B. carnosa (Willey, 1899, p. 254.) 4. ) From my own observation on the living specimens of this species, I may say the vacuolation and bulging out of the epitherial cells lini
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Keywords: ., bookcentury1800, bookcollectionbiod, bookdecade1890, bookyear1897
