NO. 1105. PROCEEDINGS OF THE NATIONAL MUSEUM. 173 



Wobnort: lu den diinnen Gediirmen des Murmellliiers {Arctomijs martnota Schreb.). 



Aum. Icb traf diese scbiiue Wurmart in dem geuaunten Tbiere, das in den all- 

 gatiiscbeu Alpen oiubeimiscb ist, imd von dem icb ein paar Stiicke am 28 Julius 1797 

 zu uutersucbeu Gelegenbeit belvam, in uusserordentlicber Menge an. In deu Gediivm- 

 en fines iiltern Murmeltbiers faud icb gauze Nester von diesen Wiirmern, so dass 

 ibro Zabl, im Ganzeu genommen, iiber 50 Stiiclie betragen haben muss. Es lagen 

 ibrer mancbmal 5-7 bejsammen, und dehuten den Darmkanal, iudem sie in Knaulen 

 iibcreinander lageu, ungemein aus. 



Icb sab Stiicke von diesen AViirmern, deren bintere Glieder in der Mitte durcli- 

 b")cbert waren ; andere Individuen batten sicli am Hintertbeile durcb die Scblinge 

 gescboben. 



Man siebt von selbst, dass die gcgenwiirtige Art mit dem lauzetfiirmigen Band- 

 wurme' ungemein viele Aebnlicbkeit iiabe, da aucb dieser an deu Riiudern der Glie- 

 der Ivurzo Seitenborsten zu nabeu pllegt; demungeacbtet kann icb micb bey geuauer 

 Vergleicbung nicbt iiberzeugen, dass beide Wiirmer einerley Art seyu. Aucb die 

 Tcenia pcctinata - ist mit dieser Art uabe verwaudt. 



Eudolplii^ in 1814 and 1819, Diesing^ in 1850, and BairdMn 1853, 

 mention Frolich's parasite under Tamiapectinata., accepting Twnia mar- 

 motw as synonym. K. Blaiichard ^ in 1801 was evidently the second 

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

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

 length by 5 to 13 mm. in breadth. Head measured (K55 to 0.G3 mm. 

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

 neck absent; segments varied from 5C // 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 //; bulb of i)yriform body, 23 //. 



Stiles^ 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^ figured the genital organs. 



Kailliet ^ in 1893 took this species as type of his new genus Cteno- 

 tcvnia. 



From writings of Frolich and Blanch ard and from my own studies 

 I propose the following as revised sj^ecific diagnosis : 



Diagnosis. — CiUotcenia marmotw (Frolich, 1802), Stiles & Hassall, 

 1890: 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, Eiugeweidew., p. 377, pi. xxix, fig. 3-12. 

 2Ebendas, p. 363, pi. xxvii, fig. 7-12. 



^Erster Nacbtrag, etc., Ges. Naturf. Freunde Berlin, etc., VI, 1814, j). 108; Ento- 

 zoorum Synopsis, 1819, p. 488. 

 ■•Systema belmiutbum, I, p. 498. 



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

 6M«5m. Soc. zool. France, IV, pp. 444, 461-466, figs. 31-35. 

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



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

 ^Traite de Zool. m6d. et agric, I, p. 278. 



