434 BULLETIN OF THK UNITED STATES FISH COMMISSION. 



2. Ec)ieneibolhrium sp. [PI. xxvi, figg. 285-288.] From a specimen taken by the schooner Gramp^ts 



July 29, 1899, off Gay Head in 6-t fathom.". Specimens coUecterl by Mr. J. A. Ptewartson. 

 Specimens small, not exceedinj; 10 mm. l^cn^th of heail of one which measured 7.5 mm. 

 was 0.38 and the breadth 0.43 mm. The hothria were contracted by the formalin, in which tluv had 

 bw>n jilacefl, and their real structure is ditlicult to make out. Upon superficial view they api>ear to Ix' 

 divided into five loculi, by transverse cogtie. A single bothrium was separated an<l plac«l in ai-etic 

 acid, and showed a structure much like that found in R. mliiiiiivm (5, pp. 441-442, ]il. xx.\iii, lit;. 5); 

 that is, nine or ten Irx'uli arranged around a central spaie. In one specimen the l>othria weredi.'^tiiictly 

 in pairs, which corresponded to the Hal surface of the body. In their contracteil condition the bothria 

 are attached by their posterior ends and project forward; their borders are finely crenulate; slightly 

 tumid immediately behind the head, but evidently capable of elongation, and may apix^r very 

 different under varying conditions; transversely striate, striie merging quickly into divisions betwe<>n 

 segments. Strobiles clavate. |iosterior edges of segments slightly projecting, ^[ature segments not 

 seen. A cylimlrical myzorhynehus with a terminal ai>erturc was seen in one specimen, projecting a 

 little in front of the anterior edges of the bothria. 



3. Acaiitholxithriiim jiauium Linton. .Inly 29, 189iJ; 1. See under />((.'<i/((/i.< «;i(/-«r(i, No. 11. 



4. Jihynehoholhriinn agile Linton. 5, p. 451, pi. xx.xiv, figs. 12-15. 7, p. 275. 



5. lihi/tichfihiilhriiiiii hnjiarlspive Linton. July 29, ISH9; numerous. The siiecimens in this lot are 



variable, but the character of the hooks is that of this species. The si/.e is smaller than those 



upon wliii-h the s|H'cies was founded. See under Rnjn iriiiaeen, No. 4. 

 (i. Tdnirlii/iifliiiK r'lliKstiif: IMiUm. 7,\t. l'7l>. See imder /)</.«/';/« <<)//r»n(, No. 18. 

 7. /{Iiiiiirliiil'iitliriiiiii. Cysts. July 29, 1S9!I: tnim stomach wall between MUici:sa and subniuco.'ia, alMPUt 



2 mm. in length. The hooks .seen through sheath suggest U. I(iiniisj,i,i< (SS, pp. s:!.">-S37, pi. xi, 



figs. 18-20). 



TUE.M.\roOI->. 



.S. I>ixtitmiiin nmrrnciiliili- l)ii-sing. .hdy 2!l, 1S99; ;; and fragment from stomach. Tin- two largest 

 specimens measure 1I)..t mm. in length and 2 nun. and 3.4 mm., resjiectively, in breadth. 



Chimsera affinis. 



NKMATOllh^. 



1. ,l.vc//W.s rittiiiiihitn Tiudolphi. 



One male, length 22 mm.; fr.igment of female, length 34 mm.; maxiinnin diaiiieli'r about middle. 

 1.5 mm.: collecteil by S. K. Meek, KiMlon Market, New York, October, 18.S(i. 



Bhinoptera bonasus ( Hhiiinfli ni iinndrllnhii), Cdii-hdsiiI Rnii. 



VI Ml I I. 



The following material has lieeii noli'd; .\dductor mn.-cle.s of clam, opi niila of .-iome ga.-^teropod 

 mollusk (Imridliiif) jiacked together like ;i pile of saucers, a small lobster, fragments of crabs, and 

 other Crustacea. 



Cl.>iTonKS. 



.\ll from sjiiral valve. 



1. I\lii)i(liothrhim miiriihiiitiii l.inlon. tj. pp. 771-77.5, pi. v, ligs. 3-5. 



2. Erhfririhotliriiiiii sp. [PI. xxvi, tigs. 2S3. 2.S4.] Near !■'. 'ijfim- Olsson. 1S!I>I, .\ug. ; 3 small s|K^ci- 



mens; from ray taken by the steamer /•V.v/i Jlniik. 

 These worms do not excccil 10 nnn. in length. They differ from No. 2 under MiiVhiIhiUs fniiiiiivillii 

 in the more ])edicellale charaiter of bothria and le.s-' definite locidi on s;ime. The my/.orhynchns, 

 insteail i>f being cylindrical, is conical when extended; when ri'tracteil the head looks like /•■'. 

 taridhlli; only much smaller. Dimensions of a specimen in millimeters: Length, 7.5; length of both - 

 rinm, 0..30; breadth of heail, 0.50; breadth of bothrium, 0. 17; diameter of myzorhynehus, at ba.«e 0.07, 

 at apex 0.04; diameter of body just behind head, 0.09; hist segment (irregular length), 0.73; greatest 

 breailth, anterior, 0.23; lea.st breadth, jxisterior, 0.12; penultimate .•segment, length 0.38, breadth 0.29. 



3. 'J'liliicijjhnliiiii jiiiiiiiw Linton. 2, pp. S(M>-809, \i\. ix, tigs. 5-9. 



4. Rhiinchoholltriiuii hrfri.ti>iiif Linton. 5, pp. 450-451, jil. xxxiv. ligs. 9-11. 



5. Rlijinchobothriinn injile Linton. 5, p. 451, pi. xxxiv, figs. 12-15. 



6. Telrarhynchug Tobustus lAxiton. 5, p. 452. See also under /)'/.si/i/'iVr, /i/riov/. No. IS. 



