Bull. U. S. F. C. 1899. (To (ace page 492 | 



Plate XXVI. 







282 



<? 6 T -V - 







-■■■ •■^-V^oSo 



285 



^C^88 





» 3 /„ -V As«J. ■ 



a^t.^a 



06 <»"<»V»'S»ST'»iii''«4l' ' 



' ' (^^ 

 - V' .7/3 op 



252. 7^'»m sp. continued. Section of mucous membrane of intestine 



with head of parasite. x300. m. Lining of pit and pUi^ 

 between bolhria. structureless; b, bothria covered with tine 

 spines; mm. mucous membrane. 



253. Erbencibothrinmi'p. Oear E. ci^^'/ir Olsson) from intastine of Rhi- 



unplcrahomif^its: front view of head. x65. 

 'JSl. Lateral view of head of another specimen, x 65. 

 i;k>-287. Echein:it}Othrinm i>\i. from MyliobatisfreminvUIei: lateral view 



of heads of different individuals, x 65. 

 288. Plan of locuU on bolhrium. x 65. 



289. CaUiobofhrium rfittcUtatKtn Rudolphi. from Mustelus rantV; ripe 

 .segment with five apertures for discharge of ova. (i. Flat sur- 

 face of segment; b. marginal view. 



2y0. PumtH'nia 7ti€(lusia Linton, irora Dnst/nt/s rmirurn, strobile; life. 

 X ItiO. 



291. Posterior segments: life. •: 300. 



292. PhDrehbnthri.itm frilonilntum sp. nov. from Carr/iariDuit obi^rurus; 



single bothrium, showing characteristic trilocular border. 

 X 100. 



293. Arantltobothrium coronatum Rudolphi, from Hajala-ri^. Lateral 



view of scolex. X 65. 



