ASCAEIS DECIPIENS. 



109 



1. ASCAHIS DECIPIENS Kiabbe, 1878. 



(Figs. 1-22.) 



? 1853, Asoaris similis Baird, see p. 146. 



1878, Ascaris deoipiens Krabbe, Oversigi K. Danske Videnskab. Selskabs Porh., pp. 45-47, fig. 1; 



pi. I, fig. 3; r68nm6 pp. 10-12.— JagerskiCld, 1894, Zool. Jahrb., VII, pp. 452, 467-474, pis. 



XXV, fig. 14, XXVI, 26, XXVIII, 40-41.— Stossich, 1896, Boll. Soc. adrlat. Soi. nat. Trieste, 



XVII, p. 20. 

 ? 1888, Aacaria bulhosa Cobb, Jeuaisclie Zeitscbr. Naturw., XXIII, (n. F., XVI), I, 8 Dec, 1888, pp. 



59-64, pi. V, figs. 29-30.— Cobb, 1889, Arch. f. Naturg., 55 Jhg., I, p. 150, pi. vii, figs. 7-8. 

 1894, " Ascaris osculata Rudolphi," misdet. in Coll. Leidy, see Stilks & Hassall, Veterinary Mag., 



I, 5, p. 340. 



Diagnosis. — Intermediate lips absent ; lateral cervical alae absent; lips of nearly equal diameter, 

 but with different outlines, witb bilobed anterior projection, ■which is much more prominent on the 

 dorsal than on the ventral lips, and armed in both on its inner surface with a dentigerous ridge. 

 Cervical papillae about 0.5 to 1""" from the anterior extremity. Body attenuated more toward the 

 anterior than toward the posterior extremity. Cuticle with 40 to 48 /n transverse cuticular bands, 

 which are provided with much smaller (4 fi) striae. Oesophagus divided into two portions : oesopha- 

 geal caecum may be distinct or incorporated in the second portion of the oesophagus; intestinal 

 caecum present, may be short or long. Excretory pore median, anterior, between the ventral lips. 



Male : 33 to 70""" long, by 1 to 1 .S"""" thick ; tail with lateral ^ae, about 3"'"' long ; 5 to 6 pairs of 

 postanal papillae divided into two groups ; 1, 2, 3 near the tip of the conical tail, 3 larger than 2, 2 

 larger than 1 ; 4, 5, 6 nearer the cloaca, 5 larger than 4 or 6 ; about 60 pairs of praeanal papillae, 

 arranged on each side in single or double row, increasing in size from first to eighth; spicules of 

 nearly equal length, varying from 1.5 to 2.5™"' long. 



Female: 25 to 80""' long by 1 to 2"'™ thick; vulva marked by a transverse ridge in the middle 

 third of the body. Eggs spherical, 48 to 56 /i, segment to morula stage in the uterus. 



Habitat : Stomach and intestine of marine mammals, larvae encysted in marine fish. 



Hosts. 



Locality. 



Collector, 



Authority. 



A. For adult. 



Oallorhinus ursmua 



Oystophora erUtaia 



ErigniathuB ba/rbatus 



Urignathus barbatus 



Erignathui ba/rbatus 



Eumetopias stelleri - . 



Saliehoerus grypuB 



Macrorhinus anguntiroatris. 



Odobenun rosmarus 



Phocafoetida 



Phoea groenlandica 



Phoca groenlandica 



Phoea largha 



Phoca vituUna 



Phoca vitulina , 



Phoca vitulina 



Phoca vituli/iia 



Seal, gen.? sp.? 



Seal,gen.9 sp.? 



Seal, gen.? sp.? 



B. For larva. 



Oadus macrocephahit. 



Theragra chalcograin/ma . . . 



Bering Sea 



Greenland 



Greenland 



Spitzbergen 



Specimens from Vien- 

 na Musenm. 



Bering Sea 



Bohuslan 



(?) 



Greenland 



Greenland 



Greenland 



Lucas, 1896 



Olrik 



Vahl, Olrik, Pfaff . 

 Kiikenthal 



Lucas, 1896 . 



Specimens from Vien- 

 na Museum. 



Bering Sea 



Greenland 



Schleswig 



Leipzig 



Specimens from Vien- 

 na Museum. 



Faroe 



Iceland 



Greenland 



@hapman 



Zimmer 



Pfaff 



Merch, MoUer, Ander- 

 sen, Pfaff. 



Lucas, 1896 



Merch, Olrik, Pfaii . 



Stiles . 



Miiller 



Steincke . . 

 Andersen . 



Bering Sea 



Popoff Island . 



Lucas, 1896 . 



Stiles & Hassall, 1899, p. 113. 

 Krabbe, 1878, p. 45. 

 Krabbe, 1878, p. 45. 

 Cobb, 1888, p. 64 ; 1889, p. 150. ' 

 Stiles & Hassall, 1899, p. 113. 



Stiles Si. Hassall, 1899, p. 113. 

 Jiigerskiold, 1896, p. 467. 

 Stiles & Hassall, 1899, p. 112. 

 Krabbe, 1878, p. 45. 

 Krabbe, 1878, p. 45. 

 Krabbe, 1878, p. 45. 



Stiles & Hassall, 1899, p. 113. 



Stiles & Ha«saU, 1899, p, 113. 

 Krabbe, 1878, p. 45. 

 Krabbe, 1878, p. 45. 

 Stiles & Hassall, 1899, p. 113. 

 Stiles & Hassall, 1899, p. 157. 



Krabbe, 1878, p. 46. 

 Krabbe, 1878, p. 46. 

 Krabbe, 1878, p. 46. 



Stiles & Hassall, 1899, p. 119. 

 Stiles & Hassall, 1899, p. 120. 



' Becorded as Aaoaris bulbota. See p. 111. 



