PAKASITKS OF FISHES OF THE WOODS HOLE REGION. 459 



spennatozoa, whii-li were in active motion. Small masses of yolk, smaller than the germ cell, were 

 also seen entering the mold. The distome noted in 7, p. 296, pi. \xxix, tig. 72, is a elosel)- related 

 form. See also Xo. .'-! nnder f,iiiiin-( ji/mliix l:rri(/(iliis. 



12. IHsliiiiiiiii) <i/ip(iir}icul(ilinii lindcilphi. 7, ]>. 2Si), jil. wxvi. figs. 25, 2li. Oni' specimi'ii I'nniid in 



this host Ang. 9, ISilVI. 

 V.i. (r'hihultir i-i/xls hi kiilitt'i/s. 7, pp. 2S0, ;iol. Tliese arc iirntiahh' ^]t]i' to ]tsorosi)erms. 



HilVNCnoBDUI.I.IJU. 



14. I'uHliihdella rajtiix Verrill. 7, p. 2X0. .Si. c nnder Pirriilirlillii/s ih nliilii.'!, No. 23. 



Archosarg-us probatocephalus, Slirr/ishnnl. 



\iA\riii>cKi'n.\i..\. 

 1. lu'hinorhynclnis proteus Westrund). 



Several specimens enveloped in C(jnnective tissue cyst« from peritonenm of a lish from t'hesapeake 

 Bay. Collected by S. E. Meek, Fulton Market, New York, August 30, 1.SS6. Several of the cysts 

 coiitaineil degenerate connective tissue of a waxy consistency. The specimens were adult, the female.^ 

 containing the fusiform end)ryos characteristic of the species. One of the longer si>ecimens mea,sured 

 10. .5 mm. in length. 



Cynoscion regalis, ,Sijiiiii'(i(/iii-, HV<ii--yi.s7/. 



I'OOD. 



Oidy large s])ecimeng were exanuned. The food is tish and squids; shrimps and amphipods 

 found in a few case-s. From the stomach of a specimen of average size, about is inches in length, 

 examined July 31, 1900, there were taken two menhaden, each 9 inches long, one Ijutter-tish, 4-5 inclies 

 long, and one sipiiil, 7 inches in length. X specimen exandned on .\ugust 1, length 20 indies, had a 

 menhaden 11 inches long in its stomach. 



AC.\NTlIOCEPn .\ L A . 



1. Kchinorhiinrlma aagUtifir Linton. On viscera. I, pji. 49.'^— 490, pi. vi, tigs. 1, 2. 3, pp. .^.■^.">-.^3(i, pi. 



Lix, fig. 80. 



2. Ei'lnnorlii/nrhnx pr(jli:uK Weftruu\]>. Intestine. I , pp. 496— 197, jil. vi, figs. 3-."i. JI, pp. ."ilo-riiis. pi. 



i,x, figs. 8.5-88. 7, pp. 280-281. 

 Found three times in 1899 and twice in 1900. Heads jierforating intestinal walls as in /.'umis 

 liri,„liis. [PI. II, figs. 12, 13.] 



3. Echinorhynchus priMis Radolphi. 3, pp. ."iMD-.'iMl. [.l. i.vi, tigs. 31-38. 



One found on viscera July 2.5, 190il. While the worm wa.s living it was observed everting and 

 inverting both the proboscis and the anterior end of the body. These movements were rapid, especially 

 those of the probo.scis. 



NEM.VroDES. 



4. TiiinKiUiir ueiiiiUiKh's. [PI. x, figs. 107-109.] 7, |)p. 280-2S1. 



On many occasions and in different summers I have found immature nematodes encapsuled in 

 the mesentery and on the viscera. They were found in practically all the squeteague (92) examined 

 in the summers of 1899 and 1900. These agree in the main with those found in the blue-fish, scup, and 

 othi'rs. The largest specimens measured 17 mm. in length. A rudimentary three-lobed structure of the 

 head could be made out in some by examination underpressure in acetic acid. .V diverticulum of 

 the intestine near the liase of the a'sophagus was observed in several of tlie siiecimens. Dimensions 

 of specimen figured in millimeters: Length, 10; <liameter, 1 mm. from anterior end 0.24, 1 nun. from 

 posterior end 0.22, maximum (at anterior fourth) 0.3, at anal aperture 0.08; distance of anal aperture 

 from posterior end, 0.12. Length of cBSophagus, in a specimen 14 mm. in length, 3 nun. 



CESTODES. 



5. Larnil irstodcs {Scoli'.f ]X)hiiiiijrpln(sT>n}nri\in). Free in gall Madder and cystic duct. I, pp. 4.">3— i.54, 



pi. VI, figs. 6-9. 4, pp. 789-792, pi. i.xi, figs. 4-15. 7, pp. 280-281. 

 Found almost invariably in fish examined in 1899 and 1900; also free in iidesline of scpieteague. 

 These are always smaller than those from the cystic duct. 



