PARASITES OF FISHES OF THE WOODS HOLE REGION. 447 



CESTODES. 



5. Siint>olli.rium filicoUe Linton. Cysts on viscera. 4, p. 815. 



6. mti/iifhobothi-him Imlhifer Linton. Cysts on viscera. July 21, 1900. See 4, p. 793. 



7. RJninrliobtithrmm s]jeciosum Lintfin. Cysts on viscera. July 30, 1900. See 4, ]ip. 801-805. 



TREir.\TODES. 



8. GnttieroMvinnm sp. Intestine. [PI. x.x.xiv, tigs. 369-372.] July 21 ami .'iO and .\ujr. 13, 1900; 12 



hosts in all. 

 This is probal)ly a new species near G. arcualnm. Neck ami body crossed liy fine transverse 

 striie, which under high magnification are resolved into transverse rows of exceedingly tine, short, 

 bristle-like spines. Dimensions in millimeters: Length, 2.1; diameter, anterior 0.2, maximum diameter, 

 at about li mm. from anterior end, 0.31; anterior sucker, length 0.14; breadth of acetabulum 0.29, 

 length 0.26; ova, 0.017 and 0.014 in the two principal diameters. In one of the specimens there were 

 ova of two kinds. The smaller had thick shells with dimensions as given above. These were most 

 abundant. In addition to these there were a considerable number of larger oval eggs with thinner 

 shells in the uterus just back of the acetabulum. The dimensions of these in life were 0.028 and 0.024 

 in the two principal diameters. In the preserved specimens the contrast between these ova is not so 

 great as in life. The vitellaria are as in O. (irrmihiin, viz, 16 on each side in two lateral clusters in front 

 of the acetabuhmi. Two sets of comparatively coarse diagonal fibers crossing each other (fig. 370) 

 constitute a conspicuous feature of the body wall in the neck of a stained specimen. 



9. Dialotnitni (Kolli/ci-ria) sp. Cysts in intestinal wall. Aug. 13, 1900. [I'l. xxxiv, tig. .366.] 



Only a few of these cysts were collected, it being supposed from their appt'arance that they 

 contained degenerate connective tissue. All but one consi-sted of but little more than a mass of small 

 ova. Dimensions in millimeters: L<inger diameter of reniform mass 1.74, shorter diameter 1.09; 

 diameter of neck (?),0,13; ova, 0.015 and 0.01 in the two principal diameters. Color, yellow and white 

 intermingled. 



Scomberomorus cavalla, Crro. 



FOCI 11. 



Bones of lish, pen and othiM parts of sipiid in stdniacli. Stoniai-li usually emiity. 



CESTODES. 



1. Siinholhrlinn filicolli' lAnton. 4, p. 818. 



Scomberomorus regalis {('lihiinn rriinh). Kinij-lixli, (Vr>. 



El 1(111. 



Fragments nf smnll lish in stoiiKich. In most ca.ses the stomach was empty. 



CESTllDES. 



.Ml frnni cysts cm viscera. 



1. J:lii/iii'lioltt,l/n-iiiiii s|.. I, p. 794. .Vug. 18, l.S!)9. 



2. Tdriirhi/iirliii.s ti\K 4, p. SOS. 



3. SyiiliolhriKiiiJilicollc \A\iUm. 4, jiji. 811-S18. Aug. 18, 1,899. 



Tetrapterus imperator (Tiirniilirim alhiihii^), Sjii'ar-fisli. 



NEM.\TODES. 



1. Axc<irix iiiciirni Kudnliihi. 



U. S. National Museum collection. Label: '" From rectum <if Tdrapterus, Penikese, B. G. Wilder; 

 August 5." There are twenty-four specimens in the lot, the largest 88 mm. in length and 3 mm. in 

 greatest diameter; diameter of head, 0.4 mm. Nematodes, probably of this species, were obtained 

 from the inte.stine of a spear-fish at Wciods Hole, August 8, 1885, and turned over to B. F. Koons, 

 Mansfield, Conn. 



('ESTOI)ES. 



2. Dihotlirijiin inanuhrijornuhintim. Intestine. I, pp. 456-4.58, pi. i, tigs. 1-4. 2, |.ip. 728-731. 5, p. 429. 



3. TetrarhynchiiK {!). Cysts on intestine. 4, p. 809. 



