摘要
关于鱼类寄生线虫的研究，在国外已有很多人做过，尤其在苏联还有特设的专门机构，进行这方面的研究，其重要性于此可以想见。我国淡水鱼的种类有五百多种，多数都是有经济价值的食用鱼，但有关寄生线虫的研究，以前虽也有不少数学者做过一些，可是与其他国家比起来则显得非常贫乏了。
This paper contains the descriptions and notes of three species of parasitic nematodes in our pond fishes.Anguillicola globiceps Yamaguti,is a very common species found in the swimming bladder of Anguilla japonica.Pingus sinensis Hsü,is living in the intestine and caecum of Ophicephalus argus. Philometra carassii (Ishii),Comb.Nov.,being a parasite in the connective tissue of the caudal fin of Carassius auratus,was originally reported by Ishii as Filaria carassii in Japan.But as this particular parasite is characterized by devoid of lips on its mouth,no partition into muscular and glandular portions of the oesophagus,lacking of cervical papilla and ala,atrophied anus and vulva, almost entire occupation of the body by the uterus,two small ovaries one at each end of the body and viviparous reproduction,it seems to the writer that the worm in question should be reclassified as a Philometra.
