NO. 1105. PROCEEDINGS OF THE NATIONAL MUSEUM. 173 



Wolmort: In den diinnen Gedurmen des Murmeltbiers (Arctomys marmota Scbreb.). 



Anm. Icli traf diese scbone Wurmart in dem genannten Thiere, das in den all- 

 gauischeu Alpen einbeimiscb ist, und von dem icb ein paar Stiicke am 28 Julius 1797 

 zu untersucben Gelegenbeit bekam, in ausserordentlicber Menge an. In den Gedilrm- 

 en ernes iiltern Murmeltbiers fand icb ganze Nester von diesen Wurmern, so dass 

 ibrc Zabl, im Ganzeu genommen, iiber 50 Stiicke betragen haben muss. Es lagen 

 ibrer niancbmal 5-7 beysammen, und debnten den Darnikanal, indem sie in Knaulen 

 iibereiuander lagen, ungemein aus. 



Icb sab Stiicke von diesen Wiirmern, deren bintere Glieder in der Mitte durch- 

 locbert waren : andere Individuen batten sich am Hintertbeile durcb die Scblin<-e 



7 O 



gescboben. 



Man siebt von selbst, dass die gegenwartige Art mit dem lanzetfdrmigen Baud- 

 wurme 1 ungemein viele Aebnlicbkeit babe, da aucb dieser an den Randern der Glie- 

 der kurze Seitenborsten zu naben pflegt ; demungeacbtet kanu icb mich bey genauer 

 Vergleichung uicbt iiberzeugen, dass beide Wiirmer eiuerley Art seyn. Aucb die 

 Tcenia pcctinata- ist mit dieser Art nabe verwandt. 



Eudolplii 3 in 1814 and 1819, Diesing 4 in 1850, and Baird 5 in 1853, 

 mention Frolich's parasite under Tcenia pectinata, accepting Tcenia mar- 

 motcu as synonym. E. Blanchard 6 in 1891 was evidently the second 

 zoologist to find this species; he found 214 worms in four marmots at 

 Briancon, in September, 1887. The specimens attained 112 mm. in 

 length by 5 to 13 mm. in breadth. Head measured 0.55 to 0.63 mm. 

 long by 0.80 to 0.84 mm. broad ; suckers globular, 120 ^ in diameter; 

 neck absent; segments varied from 56 ^ to 0.75 mm. in length; genital 

 pores double and opposite, in posterior half of lateral margin. Blanch- 

 ard described a subcuticular excretory system, with two lateral longi- 

 tudinal canals, connected by a transverse canal with the canals of the 

 opposite side. Ova measured 48 to 60 yu; bulb of pyriform body, 23 /*. 



Stiles 7 in 1893 found that the dorsal canal lies between the ventral 

 canal and nerve, and that the genital canals run dorsally of the longi- 

 tudinal canals and nerves. He was unable to find Blanchard's acces- 

 sory excretory system. Later he 8 figured the genital organs. 



Railliet 9 in 1893 took this species as type of his new genus Cteno- 

 tcenia. 



From writings of Frolich and Blanchard and from my own studies 

 I propose the following as revised specific diagnosis: 



Diagnosis. Cittotcenia marmotw (Frolich, 1802), Stiles & Hassall, 

 1896: Strobila attains 112 mm. (perhaps more) in length by 5 to 13 mm. 

 in breadth. Head, 0.8 mm. broad by 0.5 to 0.6 mm. long ; hooks absent ; 



1 Goeze, Eingeweidew., p. 377, pi. xxix, fig. 3-12. 

 3 Ebeudas, p. 363, pi. xxvn, fig. 7-12. 



3 Erster Nacbtrag, etc., Ges. Naturf. Freunde Berlin, etc., VI, 1814, p. 108; Ento- 

 zoorum Synopsis, 1819, p. 488. 

 4 Systema belmintbum, I, p. 498. 



6 Cat. Specs. Entozoa or Intestinal Worms, Coll. Brit. Mus., p. 78. 

 6 Mem. Soc. zool. France, IV, pp. 444, 461-466, figs. 31-35. 

 7 Cent. f. Bakt. u. Paras., XIII, pp. '449-450, fig. 9. 



8 Stiles & Hassall, 1893, Bull. 4, Bureau of Animal Industry, p. 71, pi. vn, figs. 6-7. 

 9 Traite de Zool. me'd. et agric., I, p. 278. 



