162 THE FUR SEALS OF THE PRIBILOF ISLANDS. 



Male long de 70""", large de 2'""", 2; i>artie postorieure euiouli-e et muiiie de dciix ailes on mem- 

 branes lateiales, «Hroites, souteuues par liuit a dix papilles a la face vontrale; donx spicules inaiaux^ 

 un peu arqu(5s, larges do 0""", 04, Tun long de 27"'"', I'autre long de 15"'"'. 



Femelle longne de 70 a 100""", large de 2"'™, a 2"'™, 5, a queue conoide tros-courte ; anus a 0""", 2 

 de I'extrpiuite; vulve situce en avant dn milieu (a 25 ou 40'""' de la tete) ; uterus tri's-ample, long de 

 28 a 30""", dirigo en arriere, commeuvaut par une partie presque tiliforuic (vagin), longuo de 5 a 8""", 

 puis devenant cylindri(iuc, large de 1"'"', 8, dans une longueur do 10 a 17'""', et se divisant enfiu en 

 deux branches parallMcs contigui-s, larges de 1""", longues de 7 a 10'""', qui se retr(5cis8ent a la fois 

 pour se continuer chacuue avec Toviducte et Tovaireflliforme correspondant, dont Icsrcplis nombreux 

 occupent toute la partie postdrieurc du corps, a partir de la vulve; ooufs globuleux, lissts, larges de 

 0'"'", 041 a O'""', 043. 



Je docris ainsi des lielminthes asscz nombreux de la collection du Musdiini de Paris, ctiquetes 

 comme trouves par M. Dussumier dans un dauphin, no 5, a I'ouost des iles Maldives, ou 1830, et je ne 

 doute pas qu'ils ne soient identiques avec ceux (lue Kudolphi a dccrits sous ce mome noni comme 

 trouves dans le premier estomac d'un marsouin ( DelphinKn phocwna). 



Van Beuedeu ( 1870, pp. 362, 363) did not cousider Dujardiu's deterjmiuatiou as 

 correct, and proposed to call the worms A. Bussumierii. 



^o one appears to liave restudied the species or to have found it again, but von 

 Linstow (1888, p. 3) agrees with van Beneden that the determination by Dujardiu 

 Is incorrect, and he even doubts whether the worm belongs to the genus Ascaris. 

 Stossich (1894, p. 17), on the other hand, accepts Dujardin's determination as correct. 



In the absence of specimens it is impossible to give a definite opinion upon the 

 form, but we incline to the view that A. Bussumicrii may ])erbaps be identical with 

 A. iypim and that Dujardiu made an error in his decimals in the length of the spicules. 



1). Unidentifiable forms. 



12. ASCARIS DELPHINI Rudolphi, 1819. 



1801, "Ascarides" of Lkbeck, None Schriftou Naturforscli. Freuude Hcrlin, III, p. 281. 



1819, Jscurix dvlphini KuDoi.rui, Eutozoorum synopsis, ]>p. 51, 296. Refers to Leboc's specimens.— 



Dr.iAKDiN, 1845, Hist. Nat. Ifelmmthes, p. 221.— van Bknedkn, 1870, Bull. Acad. Roy. 



I?clgi(iue, 2 ser., XXIX, p. 3.')9. 

 1851, .iscaris delphhii ijangelid DiicsiNd as synonym sub A. simplex, Systoma holminthum, II, p. 



\bo.=Axcari» delphini Rudolphi, 1X19. 

 ?1866, Ascaris lobulala Scii.xeidek, see p. 159. 

 1878, "Ascarix simjAex Rud.," VON LiNSTOw, Compendium der Helminthologie, p. 60, as parasite of 



I'latanista (/ani/etica. 



DlAGNOSLS. — Over an inch long. 



Habitat : Mouth and stomach of dolphin of the Canges. 



Host. 



Platanitta gangetica. 



Locality. 



Collector. 



Near Calcutta Lebeck . 



Authority. 



Lebeck, 1801, p. 281. 



Lebeck (1801, p. 281) found some ascarides in a specimen of "J>t'/p7im«s gangeiicus^^ 

 [ = Platanista (jawjctica) taken in November, 1707, near Calcutta. Regarding the 

 parasites he simply states: " Sowohl in seinem Muiide als Magen, waren viele 

 lebendige uud iiber einen Zoll lange Ascarides— L. wie auch im letztern Nellu-Korner." 



Kudolphi (1819, pj). 54-296) named these worms Ascaris delphini, but did not 

 study them; he suspects that they are identical with Ascaris simplex. Dujardiu 

 (1845, p. 221) simply mentions the worms, while Diesing (1851, p. 155) refers them to 

 A. simplex under the trinomial synonym ^^Ascaris Delphini gangetici,^^ while van 



