•448 BULLETIN OF THE UNITED STATES FISH COMMISSION. 



Istiophorus nig^ricans (Hustiophorui gladiug), Sail-fish. 



CESTODES. 



1. Dibothrium manubriforme Linton, l^e under Telrapterus imjMTitlor, Xo. 2. 



Xiphias g-ladius, Siixini-tijih. « 



K<M.>I). 



Fish and squid. 



XEMATOIIES. 



1. AKcaris incurin Rudolphi. Stomach. [PI. iv, fi^^. 2n-.'52.] 



IT. S. National Museum collection; Ca.«co Bay, Me., 1S7.S. United States Fish Commission steamer 

 AlhiilroKx, near station 20111 , IHSS. Woods Hole, Mx«s.,.July 2o, 188.i. Numerous sjiecimens in each lot. 

 Jn the last lot one of the iVmales Miea>'ures 93 mm. in length; the genital aperture is 30 mm. from the 

 anterior end. Some small specimens, 12 mm. in length, are the young of thisspecies. The following 

 note was made at the time of collecting: One of the largest meai-un-d 207 nnn. in length and 3 mm. 

 in diameter. Some of the worms were of a greenish color; smaller ones, with a rerl-brown striin?; very 

 small ones, hair-1)rown; two or three, quite dark lirown. 



CE.STOnF>. 



2. Diliolhrinm pHcdlvm l\\\i\. Intestine. 2, ]ip. "-Ki-ToO, i>l. iii, ligs. l-ti. 5, ]ip. 4.30-431. 7, p. 278. 



3. JihiiiicliohothrhiM iiltniiKilniii Rudolphi. Peritoneum. I, pi>. 80.5-S0<i. pi. Lxv, figs. 8-11. 7, p. 278. 



4. Telriirhiinchtix bici/lur Uartels. Peritoneum and mesentery. 4, i)p. 813-815, pi. L.wiii, figs. l-ti. 



TREM.XTODRS. 



5. Tristomum coccineum Cnv\er. (lills. 6, pp. 50i)-510, pi. \i., fig. it. 7, p. 278. 



6. DiMomiim clavalum Rudolphi. Stomach. 6, pp. .539-.540, ]il. i. in, tigs, S-11. 



('OI'KI'OI)S. 



7. 7V((7ir7i//i//.<./i;;A;.iSteenstrui.. .luly lit, l'.»0(). 



Six specimens of this parasite were found by Mr. C F. Silvester in the frontal sinuses of a sword- 

 fi.sh head which he was dis,«ecting. The.se were females, with egg cas<-s along the sides, helil in )ilace 

 between the dorsal and ventral rows of lateral outgrowths of the body, ami ranging in length from 

 14.."> to 27 nnn. (leneral color white, becoming a very faint salmon on swollen IoIh-s toward anterior 

 en<l; lukly along median line slightly darkened by intestme showing through. F.gg mas,ses dark 

 olive, nimensions of largest s|K'i-imen in millimeters: lyengtii, 27; brcadtli of lioily at aiiterinr lolies, 

 8; at ndddle, 3; at middle including outgniw tlis, lO..^. 



Naucrates ductor, I'ilnl-Jixli. 

 But one specimen e.xaiiiiniil; no ntitozoa fomnl. 7, p. 278. 



Seriola zonata, I'ihil-jish. 



Ft»ol». 



Stomach contents of spi-cinicii examined August Hi, 1S8!I, half digested fish, probably biitlii-lisli. 



XEMATOIIKS. 



1. Asairix inriirin Rudolphi. .'<tnnu»cli. 



Two females, collected .Vugust 16, 1889. DimetLsions of one in millimeters; Length, 22; diameter 

 of he.id 0.19, 1 mm. back of head 0.28, maximum 0.9, 1 nun. from posterior end 0..36, atanalajx-rture 

 0.17; length of head, 0.12; distance from anal aperture to posterior tip, 0.3ti; distance of reproductive 

 aperture from anterior end, h.n. 



CESTODES. 



2. Tdrarhi/nchug bimlcatus Linton. Encysted, stomai'h wall. 4, |)p. 810-811. pi. i.xvi, tigs. 11-15. 



