. Bulletin - United States National Museum. Science. a. Fig. 300.—Dispharynx nasi ta. Head and tail of male. After Dujakdin, 1845 Female 5 to 9 mm. long, or 9 to 10 mm. according to Schlegel. Tail end conical, or, according to Schlegel, awl-shaped. Vulva in anterior portion of body, according to Schlegel; some writers say that vulva is in posterior portion; this species has been confused with D. spiralis in some cases and some writers would unite the two as D. nasuta, Eggs thick-shelled. Life history.—Unknown; Piana reported a life history involving intermediate stages in the sow-bug, PorceUio
. Bulletin - United States National Museum. Science. a. Fig. 300.—Dispharynx nasi ta. Head and tail of male. After Dujakdin, 1845 Female 5 to 9 mm. long, or 9 to 10 mm. according to Schlegel. Tail end conical, or, according to Schlegel, awl-shaped. Vulva in anterior portion of body, according to Schlegel; some writers say that vulva is in posterior portion; this species has been confused with D. spiralis in some cases and some writers would unite the two as D. nasuta, Eggs thick-shelled. Life history.—Unknown; Piana reported a life history involving intermediate stages in the sow-bug, PorceUio laevis, but later writers believe he was dealing with D. spiralis. The 2 species may have very similar life histories. Distribution.—North America (United States), South America, Africa (Belgian Congo), Australia, and Guam. The records of this worm from various localities are believed by Kailliet to be records of D. spiralis (p. 238). Both species need reconsideration before one may undertake to give their distribution with any certainty. DISPHARYNX SPIRALIS (Molin, 1858) Skrjabin, 191fib /Synonyms.—Dispharagus spiralis Molin, 1858; Dispharagus nasu- tus of Piana, 1897; Dispharagus spiralis columbae Bridre, 1910; Acuaria spiralis (Molin, 1858) Railliet, Henry, and Sisoff, Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States National Museum; Smithsonian Institution; United States. Dept. of the Interior. Washington : Smithsonian Institution Press, [etc. ]; for sale by the Supt. of Docs. , U. S. Govt Print. Off.
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