488 BULLETIX OF THK INITED STATES FISH COMMISSION. 



lateral ahi- exteml aljout 2 iiiiii. back <if hcail anil are about one-tenth mm. broad at the widest part. 

 Postanal refiion short, conical. Dimensions of one of the specimens in niillimclers: l-eiitfth, 37; 

 diameter of hesid O.IS, maxinuim of body 0.5, 1 mm. from i)osterior end 0.4.5, at aiuil aperture 0. IS: 

 distance of anal aperture from iwsterior end, 0.15; length of (ueophagus, 3.5. 



4. Iininalure iiematotles {Ascariji). [PI. xv, figs. 185-187.] 



A. From intestine. Numerous examples of imiiiatiire nematoiles were found in the intestine of 

 a goose-lish August 30, 1887. Body of nearly uniform diameter, ta|)ering nearly equally to each en<l; 

 greate.-'t diameter a little in front of middle; body cros.-'ed with regular transverse strise. Dimensions 

 in millimeters: Lengtli, 8; diameter 1 nnn. back of head 0.36, 1 mm. from (Kisterior end 0.28, at anal 

 aperture 0.11 ; distance of anal ajjerture from jiosterior end, 0.22; length of (esophagus, 1.5. 



B. Kncapsuled in peritoneum, over viscera generally, and sometimes on wall of body cavity [pi. 

 XIV, ligs. 179, ISO]; often in great numlx'rs. I have record of three finds of these worms, ,Iuly and 

 August. In the U. S. National Museum collection th(?re are 11 lots frcmi this ho.«t, nearly all collected 

 by Mr. Vinal X. Kdwards. In most ca.'^es the specimens are of various size." up to 45 nnn. and 48 mm. 

 in length. In the larger specimens the posterior ends are more abruptly jiointed than m the .^mailer, 

 suggesting .1. iiicreKreiiti. Bodies cros.sed by fine transverse stri;e. The worms are usually coiled in a 

 helix or flat coil, and sometimes are surrounded with a brown, waxy secretion of degenerate connective 

 tissue in the capsule. In one lot a few were seen to be i)euetrating the walls of the stomach. In one 

 of the lots three immature females were found in which tlie upper lip corresponds with Schneider's 

 figure of Ascarin rigi<l<i Rudolphi. The body is slender, tapering for a short ilistance at each end, 

 crossed by exceedingly delicate transverse stria-, which are about 0.(X)3 mm. apart. Dimensions in 

 millimetei-s: Length, 18; diameter of hea<l 0.12, of boily 0.33, at anal apertureO.il; distance of anal 

 aperture from posterior end, 0.15. 



5. Curullamis globosus Ze<ler. [PI. xvii, fig. 205.] 



A single specimen, a male from the intestine of a gooso-fish, agrees with those from the cod, 

 which I have referred to this species. See inider fldilim rnlliirian. No. 3. Dimensions, in millimeters: 

 Length, 12; diameterof head 0.3, maxinuim of body near base of o'sophagus 0.3; length of lesophagns, 

 1..55; length i>f copulatory spines, 1; axial diameter ofifbursa, 0.38. 



c^?roi)Es. 



0. Ltirriil ceslodes (i^colex j>iiltimorphux Dujardin). Free in intestine. I. p. 4.54, pi. vi, figs. 8, i). 4, 

 p. 789, etc. 7, p. 284. Found also Aug. 5 an.l 18, 1S99, and Aug. 20, 1900. On latter date 

 numerous, with two red pigment patches in neck. 



7. JilijiiiilioUi'Jiriian imjiitwpiiif hinton. Encysted. 4, p. 800, pi. i.xiv, fig. 12. 



8. lilninclioljnlhriiim speciuxiiiii Linton. Encysted. See 4, p. 801, etc. 7, p. 284. Found Aug. 18, 



1899, in cysts on intestine. « 



9. Tflmrhytichui (!) . Cysts. 4, p. 809. 



