摘要
关于带鱼Trichiurus haumela(Forskal)形态学的研究，迄今仅在消化器官和骨骼系统方面有过记载，实际上形态研究对了解鱼类分类位置等有关问题极有参考价值．作者本着上述认识对带鱼的内脏器官进行了较系统的观察，并在此基础上，从形态特征，结构功能与生活习性间的关系方面对带鱼的，分类提出了讨论。
The main part of the present paper is a detailed description of the internal organs of hair tail. The auther found out that at least two structures belonging to digestive system deserve to be noticed for thier phylogenetic significance. On which, the systematic position should be based. First, from the anterior end of the air-bladder, a solid caecal protuberance comes into view as a vestige of the degenerated pneumatic duct. Second at the junction of large intestine and rectum, a valve appears as a round fold extending out from the wall of the intestine. It is no doubt to be idetical to the spiral valve of the class selachii. Considering that both of the structures mentioned above are of primitive characteristics,it seems very clear that the systematic Position of the animal in questionis lower than that we have thought before. Futhermore, it should be emphasized that the intestinal valve of hairtail is similar both to that of Scomber and to that of Scomberomorus. Evidenthy this could be regarded as a new confirmation of strak's and Gregory's hypothesis, that is to say, either of Scomber and Scomberomorus, as both of them are closely related to hairtail, might be the remote ancestor of Trichiuridae.
