ASCARIS DECIPIENS. 



109 



1. ASCARIS DECIPIENS Krabbe, 1878. 



(Figs. 1-22.) 



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



1878, Ascaris decipiens Kuaube, Oversigc K. Daiisko Videnskab. Selskabs Forh., pp. 45-47, iig. 1; 



pi. I, fig. 3; r6sum6 pp. 10-12.— Jagerskiold, 1894, ZooL Jahrb., VH, pp. 452, 467-474, pis. 



XXV, fig. 14, XXVI, 26, XXVIII, 40-41. — Stossicii, 1896, Boll. Soc. adriat. Sci. uat. Tiioste, 



XVII, p. 20. 

 ? 1888, Ascaris hnlhosa Conn, .Jeiiaiscbe Zeitscbr. Natnrw., XXIII, (u. F., XVI), i, 8 Deo., 1888, pp. 



59-64, pi. V, tigs. 29-30.— CoiiB, 1889, Arcb. f. Natnrg., 55 .Tbg., I, p. 150, pi. vii, tigs. 7-8. 

 1894, "Ascaris osculata Rudolpiii," miwdet. in Coll. Leidy, see Stiles & Hassall, Veterinary Mag., 



I, 5, p. 340. 



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

 but witb difforeut outlines, witb bilobed anterior projection, wbich is much more prominent on tbe 

 dorsal tban on tbe ventral lips, and armed In both on its inner surface witb a dentigerons lidge. 

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

 anterior tban toward tbe posterior extremity. Cuticle with 40 to 48 jic transverse cuticular bands, 

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

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

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



Male: 33 to 70'"'" long, by 1 to 1.5™™ thick; tail with lateral alae, 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 leugth, 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 tbe body. Eggs spherical, 48 to 56 //, segment to morula stage in tbe uterus. 



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



Hosts. 



Locality. 



Collector. 



Authority. 



A. For adult. 



Oallorhintis ursiniis 



Oyst02)hora cnstata 



Urignathus harhalus 



Eriijnathus barbatus 



Erignathus barbatus 



Emnetopias stelleri 



Halichoerus grypus 



Macrorhinus angustirostris 



Odobenui: rosmarus 



Fhoca foetida 



Phoca groenlandica 



Phoca groenlandica 



Phoca largha 



Phoca vitulina 



Phoca vitulina 



Phoca vitulina 



Phoca vitulina 



Seal, gen.? sp. ? 



Seal.gea.? sp.? 



Seal, gen.? sp.? 



B. For larva. 



Gadvs macrocephalus 



Theragra chalcogramma . . . 



Bering Sea 



Greenland 



Greenland 



Si)itzbergen 



Specimens from Vien- 

 na Museum. 



Bering Sea 



Bohuslan 



(?) 



Greenland 



Greenland 



Greenland 



Lucas, 1896 



Olrik 



Valil, Olrik.Pfatf . 

 Kiikeuthal 



Lucas, 1896 . 



Specimens from Vien- 

 na Museum. 



Bering Sea 



Greenland 



Sclileswig 



Leipzig 



Specimens from Vien- 

 na Museum. 



Faroe 



Iceland 



Greenland 



Chapman 



Zimmer 



PfaflF 



Mwrch, Molier, Ander- 

 sen, Pfaff. 



Lucas, 1896 



Moroli, ulrik, Pfaff . 



Stiles . 



Miiller 



Steiucke . . 

 Andersen . 



Bering Sea 



Popott' Island . 



Lucas, 1896 . 



Stiles & Haasall, 1899, p. 113. 

 Krabbe, 1878, p. 45. 

 Krabbe, 1878, p. 45. 

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

 Stiles cfe Hassall, 1899, p. 113. 



Stiles & Hassall, 1899, p. 113. 

 Jagerskiold, 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 & Hassall, 1899, p, 113. 

 Krabbe, 1878, p. 45. 

 Kr.abbe, 1878, p. 45. 

 Stiles & Hassall, 1899, p. 113. 

 Stiles & Hassall, 1899, p. 15?. 



Krabbe, 1878, p. 46. 

 Krabbe, 1878, p. 46. 

 Krabbe, 1878, p. 46. 



Stiles & Hassall, 1899, p. 119. 

 Stiles Si. Hassall, 1899, p. 120. 



1 Kecorded as Ascaris bulboea. See p. 111. 



