58 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 2 



Egg 0.168 mm. in length by 0.064 mm. in width with one polar fila- 

 ment 0.292 mm. in length. 



Comparisons. There is some doubt that the species described 

 in this paper differs from MacCallum's. The main point of differ- 

 ence seems to be the number of posterior suckers of the haptor, 

 which number forty in T. croceus and only twenty-eight in T. para- 

 doxica. However, since only one specimen and the anterior part of 

 another were studied and MacCallum had only a few of his species, 

 the variation is not well known. For this reason T. paradoxica is 

 proposed as a provisional species. 



T. paradoxica is named for the fact that it appears most peculiar 

 in that most of the body proper functions as a haptor. 



Genus: Axine Abildgaard, 1794 



The following species of Axine have been described to date: 



A. aberrans Goto, 1894 on Belone schismatorhynchus . 



A. belones Abild., 1794 on Belone acus. 



A. carangis MacCal., 1918 on Caranx hippos. 



A. heterocerca Goto, 1894 on Seriola quinqueradiata. 



A. triangularis Goto, 1894 on Anthias schlegelii. 



Axine oligoplitis, new species 

 (Plate 8, figs. 44-47) 



Host: Oligoplites saurus (Bloch and Schneider) 



Location: Gills 



Locality: San Francisco, Ecuador 



Number: 4 



Body small, triangular, 1.820 to 1.950 mm. in length by 0.305 

 to 0.322 mm. in greatest width just anterior to ovary. Posterior 

 haptor triangular with sixteen to eighteen suckers on short side and 

 forty to forty-two on long side. Posterior suckers 0.024 to 0.036 

 mm in length by 0.044 mm. in width. Chitinous framework (fig. 45) 

 consists of two pairs of lateral pieces which are slender and widely 

 open behind, a central median piece which is also slender and bifur- 

 cated at both ends, and a slender pointed spine distal to lateral 

 paired pieces imbedded in lateral wall. Mouth ventral and sub- 

 terminal. Anterior suckers relatively far apart, elliptical, broader 



