NO. 1105. PROCEEDINGS OF THE NATIONAL MUSEUM. 165 



or less lanceolate, attaining 24 to 220 mm. in length by G to 11 mm. in 

 breadth, and containing 80 to 400 segments. Head about 1 mm. broad 

 by 1 mm. long; suckers round. Neck absent. Proximal segments 

 increase rapidly in breadth; middle segments the broadest; distal 

 segments decrease gradually to 5 min. in breadth, with more or less 

 crenate and imbricate posterior edge, and measure 0.5 to 0.76 mm. long. 

 Genital pores irregularly alternate in about the middle of the lateral 

 margin; genital cloaca and organs developed in fortieth segment; eggs 

 in uterus in fiftieth segment. Male organs : Cirrus large; cirrus-pouch 

 muscular; testicles occupy chiefly the anterior portion of the segments 

 extending the entire breadth of the median field. Female organs: 

 Vagina distal to cirrus-pouch; receptaculum seminis elongate; vagina 

 and receptaculum together extend about one-third across the segment; 

 ovary very broad, extending nearly or quite to the aporose submedian 

 line; shell-gland and vitollegene gland about in the porose submedian 

 line; uterus tubular, transverse with proximal and distal pouches. 

 Eggs 25 yw in diameter. Topography of nerves and canals'? 



Host : Flying Lemur ( Galeopitliecus volans), collected by Hubrecht in 

 In India. 



Type: 1 *. Deposited in Amsterdam. Technique of type 1 ? 



BERTIA AMERICANA (Stiles, 1895), Stiles, 1896. 

 (Plate X, figs. 1-10.) 



1855, ? Tcenia laticephala, LEIDY, Proc. Acad. Nat. Sci. Phila., VII (1854-1855), Decem- 

 ber, 1855, p. 443. 

 1895, Andrya americana, STILES, Vet. Mag., Phila., II, June, p. 344. Aug. 28, 1895. 



Leidy has given a short description of a tapeworm (Tcenia laticephala] 

 from the Canada Porcupine which agrees in some characters with the 

 form I described (Andrya americana) from the yellow-haired Porcupine. 

 I am unable to find Leidy's types, but it seems to me very questionable 

 whether the two parasites are identical. Leidy's description, which in 

 a measure recalls the genus Davainea, reads as follows : 



T^NIA LATICEPHALA, Leidy. Head large; acetabula opposite, very prominent, 

 large, hemispherical; mouth slightly prominent, unarmed. Neck short. Anterior 

 segments of the body short, oblong square; posteriorly square. Generative aper- 

 tures marginal, alternate. Protruding penes, elongate conical. Length of one speci- 

 men 9 inches, greatest breadth f of a line. Breadth of head i a line ; of neck a line. 



Hob. The small intestine of Hystrix dorsata. 



B. americana was described in the preliminary note to the pres- 

 ent revision as an Andrya, but a comparison of Meyner's excellent 

 anatomical description of B. mucronata, and of his cotype, with the 

 form under discussion shows that the American species is more 

 closely related to B. mucronata than to A. rhopalocephala; on this 

 account A. americana is transferred in the present paper to the genus 

 Bertia. 



Several specimens of tapeworms were sent to the collection of the 



