4r)4 m'LLFTIX OK THK FXITEl) STATES FISH COMMISSION. 



from whii'h, ii|ion liirtlicr |in'tisuie, :i larval rtsitf^lo { /lliiin<liiili<illiriiiiii s|i. ) nmlil In- <il)taiiu'<l. Kinty 

 ■ >f these cysts were <V)iiiite<l in a space 4 inin. S4|iian*. 



Similar coiiilitions wert- iil)si'rve<l in a Imtter-fisli linnifrlit tu tm- liy Mr. K. K. Ty/.zer, Aiij;iist 17, 

 UHK), ami in aiiutlier examineil the f<>lli«\viii<; ilay. 



In these cases enormuns iiiiml>ers of cysts were sin-n in the miis<'les. They were most alinmlant 

 on the ventr.il side of the verteliral coluniii, hetweeii the sulivertelinil spines. They were al.^o si-attereil 

 tlirim|.'h the ilorsal re-^rion, lyinj; ileep anion<r ami near the ilorsal verlelinil spines. The cysts are 

 small, oval, aliont 1 mm. in length ami somewhat -K'ss in shorter cliaineter. One me:isiireil 1..'5 mm. in 

 leiv/tli ami 0.S7 mm. in iliamet<-i-. The conlaineil lihuitocyst iiieasnreil (L.^T ami O.ti" mm. in the two 

 principal .liameters. Dimensions of the larva in millimeters: lAMii;tli. 0.7; iHithria nearly circnlar, ().:i 

 in diameter; diameter of neck, (1.1. Coiilractilc Imlhs vc-ry short, 

 (i. Ttlriirlii/tii'liiix. Cyst." on periloncnm. I, p. St19. Some of Ihe.se" may U-loni.' to the ■.'cmi- 

 lthiiii<liiihiillirhiin. 



7. TiliiiiliiiDrhiix rriiiiimix Henedeii. See I, pp. .sll-slL', p|. iwii. liirs. l-.s, July L'7, PHMI; sc\cral 



oil viscera. 



8. I.iinnl iTxtiith's (Sriilij- jxiliiiiinrjilni.t lliijardiii). I'Vee in intestine See I, ]ip. 7S'.t-7!l"_'. I'omid in 



suiniiii^rs of 1S9<» and IHIMI 

 !l. J>iliiilliriiiiii oiiyH.tliitinii Kudolphi. Sept. 1, I'.ilMl. \ liw small spi'cimi'ns, the lonj^^-st less tlian 

 10 mm. in length; heail about I mm. loiijr and «.:! mm. or less in width. VtTV active. .Toints 

 narrow and irre<^ular. Immature. 



•iia:M AToims. 



10. Il'nttoiiiitiii (/iilosiini sp. nov. [I'l. .\xviii, lijr. ;il5-.'U7.] 



Appeinliculale di.stoines, apparently new. July 2t>, l,S9!l; Hi siK?ciinens obtained from a lot of 

 4 linlter-fisli. liutter-flsh were examined on .-eventeen different oci-asioiLS in ISilS from July 17 to 

 August 2(). Dimensions of livins; specimens, sliglitly compressed, in millimeters: Leiifitli, 10; niaxiinuin 

 diameter median, 1.14; length of appendix, 3.6; diameter of anterior sucker t!).36, of acetabulum 0.:>S; 

 distani'e between snckei-s. 0.1; diameter of testes 0.47. of ovary 0.2S; ova. 0.017 and 0.010 in the two 

 principal diameters. 



Body slender; neck tubular, slightly arcuate; neck ami :interior part of body crossed by line 

 lines, which produce asliari)ly serrati^ outline; oral sucker nearly globular; mouth slightly subtermiiial, 

 with longitudinal opening; pharynx tubular, almost ;t^ long as the oral sucker; lesophagus none; 

 intestinal rami extending into the appendix, which is long and .slender; genital aperture on ventral 

 border of mouth; acetabulum nearly globular, its iliauieter not differing much from that of the oral 

 sucker; seminal vesicle some distance behind ai'etabulum, followed jiosteriorly by the two smallish 

 suljglobular te.stes, which lie end to end; ovary globular, a short distance beliind the testes; vitellaria 

 about the miiMIe of the Ixidy, behind the testes, tubular, as many as six tubules showing in se<-tions; 

 uterus voluminous, its folds extending into the appendix; ova numerous, small. I)iniensii>ns of a 

 specimen mounted in glycerine, in millimeters: lA-ngth, 7.5; oral suc-ker, length 0.:!(), brt'adth 0..S6; 

 pharviix, lengtli O.X{, breailth 0.18; acetabulum, length 0.32, breadth 0.33; distani-e from anterior end 

 to aci-tabnlum, 0.87; distance between acetabuhim and testes, 1; distance between te.«te.s and ovary. 

 O.l'.l; diameter, of neck 0.;if>, miildle of body 0.05, posterior 0.15, of anterior testis 0.28, of posterior 

 testis 0.25, of ovary 0.23; ova, tl.017 an<l 0.010 in the two princii>al diametei-s. 



The alcoholic specimens show at least one im|Mirtant variation from the living worm, viz, in ilie 

 relative size of the suckers. In one the .suckers were of equal size, in another the acetabulum wa.s 

 les.s, and in another the anterior sucker was larger but of less transverse diameter than the acetabnhnn. 

 The vitellaria are tulnilar, showing as many as ."ix distinct masses in transverse sections of the Ixnly. 



11. /liiltiiiiiim i'l). [PI. XXXII, lig. 3-i3.] 



Mention is here made of a few small distomes which reipiirc further study before a specific name 

 can be iussigned to them. Specimens were fnuml on July 24 and .\iigust 14 ami 2.3, l.stiil, which were 

 small, oval, tninslncent, bluish-white, and .«pinose. Dimensions of a living specimen in millimeters: 

 Length, 0.78; diameter of oral sucker, 0.064; of ventral sucker, 0.057. 



These specimens suggest /). jiifriforme. Others collected July 26 and -Vugust 2, 15, 20, and 23, 1899, 

 resemble these, but the habit of the b(Kly is much more slender. [Tig. .3.53.] S<jine of the.se suggested 

 J)!.ili>miim sp. from the scup [7, )>. 21I6, pi. xxxix, lig. 72], and IHiliiiiiiiin s]i. from the puffer [O, pp. 

 .537-.538, pi. i.iii, figs. 1,2]. Spines can not always be made out on the.-^.' forms. 



