RESEARCHES IN HELMINTHOLOGY AND PARASITOLOGY. 209 



dotted, black or brown, in bands. The eyes are trianj^ular, with 

 rounded angles, and black. The antennae are nearly double the 

 length of the antennules. The mandibles are furnished with a 

 strong brown tricuspid molar. The caudal plates or telson are tri- 

 angular, with a blunt, slightly emarginate apex, and with a pair of 

 spines each side of the latter. The isopod has been observed by 

 Stimpson at Charleston, S. C, and by Harger at Vineyard Sound, 

 Mass. , but has not previously been reported from the coast of New 

 Jersey. Three isolated specimens of the same were picked up on 

 the shore of Beach Haven the last summer. 



0)1 Bopynis paUcnioncticola. — Prof. L,eidy also presented numerous 

 specimens of the prawn, Palcenionetcs vulgaris, infested with the 

 parasite Bopyrus palcrmoneticola , obtained at Beach Haven, N. J. 

 From about two quarts of the prawn caught for fish-bait upwards of 

 fifty contained the Bopynis. 



[February, 1888. No. 555. See Bibliography.] 



Reputed Tapenvrin in a Cucumber. — Prof. Leid}' stated that sev- 

 eral years ago his colleague in the university, Prof. Wm. Goodell, 

 submitted to his examination a tapeworm which he received from 

 a correspondent, with the label "From the middle of a cucumber 

 preserved in brine. S. E. Robinson, West Union, Iowa, May 29, 

 1876." The specimen appears to be complete, and in its present 

 condition, preserved in alcohol, is about eight inches long. The 

 head is large, spheroid, provided with four small equidistant hemi- 

 spherical bothria, and surmounted by a prominent crown, with a 

 double circle of strong hooks. The neck is a slight constriction, 

 whence the body rapidly widens and again tapers behind. The an- 

 terior segments are transversely linear, with a gradually increasing 

 length and more acute and prominent lateral ends ; the middle seg- 

 ments are about twice the breadth of the length and slightly cam- 

 panulate, and the posterior segments are proportionately longer and 

 narrower. In the latter the uterus is distended with eggs only at 

 their anterior portion. 



The hooks are partially lost on one side of the crown, and it is 

 estimated that there were about 40 or more. 



The head is .875 mm. broad ; the crown of hooks .625 mm. ; the 



neck .8 mm. ; at the middle of the body six segments together are 



I cm. long and 3 5 mm. wide ; the terminal segments are about 4 



mm. long and 2.5 mm. wide. The eggs measure from .032 to 



036 mm. 



14 



