1 f) 6 TA PE WORMS OF HA RES A AT/) RA BBITS— STILES. vol. xix. 



1881, Ta'tiia rhopalocephaht, Eiehm, Zeitsclir. f. d. ucvs. Xaturwiss.. 3 ser., A'l, y. 200; 



551-562, pi. V, iigs. 1, 7-10, 18, vi, 1. 

 18iU, Atioiilocephula rhopaJocephala (Rieum, 1S81), K. Ulaxchahi). .Mom. Soc. zool. 



France, IV, p. 418. 

 189:^, Andnin jwclinala ([GoEZE, 1782] Zedeh. ISOO). Kaii.mkt. Trait(> de Zool. iiird. et 



agric, 1, p. 283. 

 1895, Andiira rhopulocepliala (Rieiim, 1881), Stiles, Vet. Mag., II, pp. :!13, WU. 



I can liiid no evidence that Goeze (1782) had any single-pored forms 

 before liim when he described his Twnla pectinata. Zeder ' in 1800 rede- 

 seribed what he supposed was Goeze's species, but states tliat the pores 

 were single. Riehm^ in 1881 considered Zeder's species identical with 

 the one now under consideration, and authors have followed him in 

 this opinion. Zeders description appears to me, however, altogether 

 too fragmentary to accept this view as proven; at the same time it is 

 impossible to definitely disprove Riehm's conclusion. Riehm'in 1881 

 was the first to recognize Tmiia rhoiHilocepluda as a distinct form; Lis 

 revised diagnosis^ reads as follows : 



Kopf hakenlos, gross uiul keulenfoiiiiig, mit stark vorspringendeu, miiclitigen 

 Saunuiipfen, scharf abgesetzt gegen deii Halstlieil. Geschli chts<>ffninigcii oinfach iin 

 unteren Viertheil des Proglottideiiraudes gelegcu, meiat durebg.-ingig auf dcrselben 

 Seite. Glieder trapezfonmg, etwa vh&n so breit als lang. Liinge im ansgestrecktcn 

 Zustaiide 60—80 cm., Brcite der reifsten Glieder weuig iiber 5 mm. Wohuthier: 

 Lepua timidus. 



Blanchard'^ in 1891 transferred Riehm's species to the genus Anoplo- 

 cephala, while Raillief^ in 1893 took it as type of the genus Aii(h\i/a. 

 Railliet reverted to Zeder's specific name, but I now adoi)t rhopalo- 

 cephala on the ground that Zeder's pectinata was not proposed as a name 

 for a new species, but Zeder was under the impression that he was 

 redescribing Goeze's form. Andrya rhopalocephala has not yet been 

 recorded for this country. The following statements are based upon 

 Riehm's specimen (Xo. 1484, U.S.iSr.M.), mentioned on p. 155. 



The anlage of the genital canals and female glands appears earlier 

 than the testicles. In the lateral third of the segment on the pore 

 side the undifferentiated anlage of the canals maybe distingui.shed 

 in the distal portion of the segment, and at its median end itbecomes 

 widened to form the anlage of the female glands. The anlage of the 

 canals gradually thickens while the portion destined to form the female 

 glands becomes more or less distinctly separated from it. At a time 

 when this apparent separation takes place, small, quite indistinct, 

 points of chromatophile material appear in the aporose portion of the 

 median field and form the anlagen of the testicles. The segment now 



'Erster Nacbtrag zur Natur. der Eingew., Leipzig, pp. 246-249. 

 ^Stud. an Cestoden, Zeit. ges. Is^at., .S ser., VI, pp. .545-.546, pi. v-vi. 

 '[Untersncbnngen an den Bandwiirmern der Hasen nnd Kanincbeu], Zcitscbr. ges. 

 Natnrw'., ?> ser., VI, p. 200. 



'Studien an Cestoden, Zeitsclir. ges. Natnrw., '.^ ser,, VI, p. 551. 



'^M6ni. Soc. zool. France, IV, p. 448. 



6 Traits de Zool. m6d. et agric., I, p. 283. 



