144 



THE FUR SEALS OF THE PRHULOF ISLANDS. 



Die Lekannten Foriuen, welcher hier iu Frage komiiieu konnteii, sind Jicarix osciilata, dcci})iens 

 iinil nimilis welcbe vou ilieser Form dmcbaus vc^rschioden .siud, wie aiis Krabbe's neiiester (1878) 

 Darstellung der in Robbeii und Waleu gefundeuen Ascaris-Arteii crsicbtlicb ist. 



No other original observations have been made npon this parasite. 



B. The ventro-lateral lips, said to bear a papilla armed with 6 to 7 small tocth [;=deiitigoiou8 ridge ou 

 a bilobed projectlouf]. 



6. ASCARIS KiJKENTHALII Cobb, 1888. Sp. inq. 



(Figts. 58-04.) 



? 1809, Jscaris simplex RUDOi.nii, see page 121. 



1888, Ascarin KiikenthaUt Couu, .lenaische Zeitschr. f. Naturw., XXIII (u. F. XVI), I, Dec. 8, 1888, pp. 

 44-59, pis. HI, figs. 1-11, iv, 12-30.— Coins, 1889, Arcbiv f. Naturg., 55 .Ilig., I, pp. 149-150, 

 pi. VII, figs. 4-6. — Stossicii, 1896, Holl. Soc, adriatica Sci. nat., XVII, p. 53. 



1894, Axcaris Eiikenthalii Cobb, as probable synonym of A. simplex Rud., JXciERSKioLD, Zool. Jabrb., 

 VII, pp. 474-476. 



Diagnosis. — Intermediate lips absent; lateral cervical alae absent; bead (male) scarcely 0.33""" 

 broad, lips of nearly c(inal size; lobes not miMitioncd; dentigerous ridge not mentioned, but one 

 papilla on each ventro-lateral lip said to bear teeth; dorsal lip bears a symmetrical pair of papillae, 

 the ventro-lateral lips said to jiossess 3 papillae each; an upper one [donble lobed projection?] with 

 6 to 7 teeth, a lower one on which uo teeth were visible, and a very small one about iu the middle of 

 the inner side; cervical pai)illae 1""" from the head. Excretory organ discharges between the 

 ventro-lateral lips. Body attenuated toward both extremities. Transverse cutictilar bands 30 //. 

 OoBophagns composed of two portions; anterior portion 5""" long by 1""" in diamete^ (distal end); 

 posterior portion 2 to 2.5""" long, generally sigmoid; caeca apparently absent. 



Male : 70 to 90'""' long by 2 to 3""" thick ; tail with lateral alae; 7 to 8 pairs of postanal jiapillae; 

 1 to 4 near the tip; 5 to 8 near the cloaca, of which 6 and 7 are donble; about 90 pairs of piaeanal 

 papillae extending about 10"'"' forward from tip of tail; of these 6 to 10 ])air8 of short papillae lie 

 antero-lateral of the cloaca; then follows cophalad on each side a row of longer papillae; ajjparently 

 two median pa])illae immediately in front of the cloaca; left spicuhim (2.3""") slightly larger than 

 the right (1.7'"'"). 



Female: 80 to 100""" long with inaxinuim breadth of 2.5"""; vulva a little anterior to middle of 

 the body. Eggs reach the morula stage in the nterus. 



Habitat : Stomach of marine animals. 



Host. 



Locality. 



Collector. 



Authority. 





Adveot Bay, AVost 

 Spitsibergon. 



Kiikeatlial 



Cobb, 1888, l>. 44 ; 1880, p. 149. 







Stoasicb, 1896, p. 53. 











Historical Eeview. — This species was tlescribed by Cobb, but Jiigerskiold 

 thinks it probably identical with A. simj)lex. In detail the history of the species is as 

 follows : 



Ascaris KulceuthaUi, collected by Xiikenthal, August, 188C, Iroiu the stomach of 

 Beluga leucas {^^Ddphinapterm lencas) iu the Advent Bay (West Spitzbcrgen), was 

 described as a new species by Cobb (1888, pp. 44-59). While his anatomical discus- 

 sion is excellent, he omits some extremely important points of systematic value; 

 apparently he was not ac(iiiainted with Krabbe's work upon the parasites from this 

 host. 



He describes the male (fig. 58) as 70 to 90"'"' long, by 2 to 3"'"' broad: head 

 scarcely 0.33"'"' broad; body attenuate anteriorly, aiul very slightly pointed pos- 

 teriorly; tail is curved and provided with a bursa; the papillae are figured (fig. Gl) 



