. Annotationes zoologicae japonenses / Nihon do?butsugaku iho?. 390 MASANOSUKE TA : third annulets of the right antenna taken together. Unlike a normal annulet, it is somewhat narrowed in the middle a;id swollen at both ends, and is slightly bent mesially in the distal parts. The third annulet is somewhat flattened and is about as long as the fourth, fifth and sixth annulets of the right antenna taken together. Its proximal, somewhat en- larged end is bent mesially ; the distal parts are davate. Due to the curvature of this and the preceeding annulet, the entire antenna takes a directi
. Annotationes zoologicae japonenses / Nihon do?butsugaku iho?. 390 MASANOSUKE TA : third annulets of the right antenna taken together. Unlike a normal annulet, it is somewhat narrowed in the middle a;id swollen at both ends, and is slightly bent mesially in the distal parts. The third annulet is somewhat flattened and is about as long as the fourth, fifth and sixth annulets of the right antenna taken together. Its proximal, somewhat en- larged end is bent mesially ; the distal parts are davate. Due to the curvature of this and the preceeding annulet, the entire antenna takes a direction bent to the right. The last annulet is the largest, being as long as the five successive annulets from the seventh of the ri"ht antenna taken togedier. It is some- Fig l what flattened like the preceeding one, but shows no enlargement at the proximal end. There can be no doubt of that being the last segment, since there exists no trace of injury at the extreme tip. Among the papers regarding structural anomalies of myriapods, we find a number of cases of polymery of the legs, such as those described by SILVESTRI (1897), BRÖLMANN (1884), and LÉGER and DUBOSQ (1903). A case of abnormality of the gonopod was described by BröLMANN ( 1916). As to abnormality of antenna in the group, the specimen here noted seems to be the first case put on record. It is difficult to decide in the specimen whether the abnormality is due to regeneration or is congenital. It is true that in the myriapods homomorphosis is commonly met with, not only in the legs, but also in the anal appendages. New PORTS observed the same phenomenon in his experiments with the antenna; of Juins. However, I am inclined to think that the case described above is not one of regeneration, and that on the ground that the first annulet or the basal joint of the ab- normal antenna is larger than the corresponding annulet of the other. Please note that these images are extracted from scanned page images that may have
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Keywords: ., bookcentury1800, bookcollectionbiod, bookdecade1890, bookyear1897
