RESEARCHES IN HELMINTHOLOGY AND PARASITOLOGY. 4 1 



Remarks. — The description is taken from two individuals preserved 

 in alcohol, in the collection of the Academy, presented by Dr. R. 

 Coates, who obtained them, according to the label upon the bottle, 

 from the parietes of the heart of a dog. 



3. Filaria Boer constrictor is. 



Body white, cylindrical ; integument translucent, longitudinally 

 straited, mouth simple, round ; oesophagus cylindrical, opaque, 

 white ; intestine opalescent, cylindrical, tortuous, corrugated, wider 

 than the oesophagus ; anus terminal, round ; generative aperture 

 close to the mouth ; ovaries two, very long and very tortuous. 



Remarks. — The description is taken from two specimens ; one 10 

 inches long by 4-5ths of a line wide, the other 6>^ inches long by 

 3-5ths of an inch wide. In the former the oesophagus is g inches 

 long and i-3d of a line wide, the intestine 13 inches long and 3-5ths 

 of a line wide. 



Habitation. — Found in the areolar tissue, in an irregular or tortu- 

 ous position, between the muscles of the ribs and the integument of 

 a Boa constrictor. 



Note. — In the same Boa constrictor, which was dissected by 

 my friend Dr. Hallowell and myself, we found in the right lung 

 6 females, 4 males, and a very young individual of Pentastomnm 

 proboscideuin, and in the ureters of the kidneys 26 individuals of 

 Distomnm horrid/im. 



[December, 1850. No. 64. See Bibliography.] 



DESCRIPTION OF NEW GENERA OF VERMES. 



Peloscolex. n. g. — Setae in two rows, 6 to 10 in each fasciculus ; 

 podal hooks in two rows, in twos or threes, bifurcated at the free 

 extremity, each annulatiou furnished with a circle of prominent 

 tubercles, with numerous smaller ones. Upper lip hardly project- 

 ing. Girdle not prominent. Blood red. 



I. Peloscolex I'ariegatus. — Body cylindrical, posteriori}- obtuse, 

 anteriorly sub-acute. Setae simple, usually ro in each fasciculus 

 anterior to the girdle, absent in the posterior 22 annulations. Podal 

 hooks anteriorly in threes, divergent, strong, sigmoid, bifurcated 

 at the extremit}^ ; posteriorly in twos, one rudimentary. Each an- 

 nulatiou furnished with a circlet of elevated, rounded tubercles, 

 I -Sooth inch in height, and numerous smaller ones, also arranged 

 in transverse circles. Anterior 3 or 4 annulations reddish ; after 

 these 25 are deep black, except the loth or girdle, which is broad 



