146 



THE FtJE SEALS OP THE PRIBILOF ISLANDS. 



Cobb's second (1889, pp. 149, 150) article is for tlie most part a repriut of page 44 

 of his first article. 



Jagerskiold (1894, pp. 474-476) calls attention to the resemblance of A. Kukenihalii 

 to A. simplex; he inclines decidedly to the view that the two forms are identical, but 

 in the absence of specimens of A. Kukenthalii for comparison he reserves judgment. 

 Stossich (1896, p. 53) cites A. Kukenthalii as a distinct species, gives a condensed 

 diagnosis taken from Cobb's description, and adds Phoca harbata as a host. This new 

 host, for which Stossich does not give his authority, is probably an error, and might 

 have occurred while referring to Cobb's second article. 



Prom the above review it will be clear that, A. KUhenthalii bears a close resem- 

 blance to A. simplex; we agree with Jagerskiold that the two forms are probably 

 identical; in fact, we think there can be scarcely any doubt regarding this point. 

 Cobb's median symmetrical papillaj of the dorsal lip would correspond to the small 

 anterior bilobed projection of A. simplex, as his figure (see fig. 62) shows; the armed 

 papilla of each ventral lip would correspond to dentigerous ridge of the ventral lips of 



Fig. 63. 



A. simplex; the other essential characters are practically the same in both forms. Not 

 having specimens of either A. simplex or A. Kiikenthalii, however, we follow Jagerskiold 

 in retaining the species as distinct, hoping that theoriginals of A. Kiikenthalii maybe 

 found and reexamined. 



C. Data concerning the dentigerous ridge wanting. 



7. ASCARIS SIMIIiIS, Baird, 1853. Sp. inq. 



(Figs. 65-69.) 



1853, Asoaris similis, Baikd, Catalogue Entozoa Brit. Mus., p. 19,pl. i, figs. la-d. — Baird, 1853, Proc. Zool. 

 Soc. London, Part XXI, p. 18. — Baird, 1855, Ann. and Mag. Nat. Hist., 2 ser., XV, pp. 69, 70. — 

 DiBSlNG, 1860, Sitzungsber. Akad. Wiss. Wien, XLII, no. 28, p. 656.— VON LiNSTOW, 1878, 

 Compendium der Helminthologie, p. 44. — Stossich, 1896, Boll. Soc. adriatica Sci. nat. Trieste, 

 XVII, p. 63. 



Diagnosis. — Intermediate lips absent ; lips of about equal size, slightly projecting beyond the 

 margin; dentigerous ridge (?); body attenuated more toward anterior thskn toward poBterior extrem- 

 ity, which is thick, round, and obtuse ; wing extending along the whole length and becoming thicker 

 and stronger at inferior extremity; cuticle with fine transverse striie. , 



Male (female?): About BO™"' long by 2""" broad; straight to within a short distance of tail, 

 which is inflected; of a whitish cblor. 



