1 



The indication of Sproston (Sproston 1946, pages 2Z5 and 524) on the 

 finding of A. tandani Johnston and Tiegs on Gadopsis species is based on 

 poor acquaintanceship with the work of Hughes (Hughes, 1928) and does 

 not correspond to reality. 



Anchylodiscus because it is described very poorly and requires restudy. 

 Consequently, it is not possible to utilize this case in the question under 

 consideration. Of the four species of Axinoides, one--A. oligoplites 

 (Meserve) Sproston--is indicated from Carangidae, whereas the rest are 

 encountered on Belonidae. Study of the given species indicates that it is 

 relegated to the genus Axinoides erroneously by Sproston and that un- 

 doubtedly it should be transferred to the genus Heteraxine Yamaguti-- 

 H. oligoplites (Meserve) Bychowsky comb. nov. and, running ahead, we 

 shall indicate that the genus Heteraxine basically parasitizes Carangidae. 

 Thus, Axinoides actually is related to a group of genera parasitizing only 

 one family of fishes. 



The finding of the genus Diclidophoropsis on two families of 

 fishes must also be considered untrue. In the examination of the description 

 of D. taschenbergii (Parona and Perugia) Sproston, one can ascertain that 

 the attribution of this species to Diclidophoropsis is doubtful because the 

 structure of the copulatory organ of the typical shape of D. tissieri Gallien 

 sharply differs from the one of D. taschenbergii. The indications by the 

 authors of the presence of two vaginal openings among the latter demands 

 verification .because one can suspect from their drawings that they mistook 

 the terminal part of the excretory system for the vaginal orifice (see 

 Parona and Perugia, 1892, page 95, and Table 11, Figure 4). We suppose that 

 the transfer of the species D. taschenbergii from the genus Choricotyle, 

 which was made by Sproston, (Sproston, 1946) is not supported by the facts 

 and Diclidophoropsis must be considered as a genus which occurs only on 

 one family of fishes. 



The comparison of the morphology of two species of Murray- 

 trema which were discovered on hosts of two different families leads us to 

 the division of this genus into two. Precisely the last circumstance forces 

 us to examine these two species more attentively. The presence of three 

 unarticulated (?) middle plates of the attaching armature of the disc is a 

 characteristic sign of the genus established by Price (Price, 1937b). This 

 sign, however, is insufficiently convincing without special analysis of the 

 correlations of middle plates with the nniddle hooks. Thus we see that the 

 right and left pairs of the middle hooks of M. robustum (Murray) are linked 

 with the corresponding one of the lateral dorsal connecting plates and the p. 254 

 middle (ventral) is linked with the latter just as takes place among all 

 Diplectanidae. For the second species--M. copulatum Mueller--it is 

 characteristic that the three connecting plates are located and articulate 



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