192 ANIMAL PARASITES. 



thological anatomists, on account of its having been confounded 

 with alveolar colloid, will justify us in treating of this subject 

 more in detail hereafter. 



Although it will have been seen that two distinct models may 

 be distinguished in the mode of production of the Echinococci, 

 it is, nevertheless, difficult to find a suitable nomenclature for 

 the two species thus formed. The denominations — 



a. Echino coccus scolicipariens, and 



b. Echinococcus altricipariens, 



may, perhaps, appear the most proper, and I shall employ them 

 in the following pages. 1 



a. Echinococcus scolicipariens = Echinococcus veterinorum: 



of the earlier authors. 



Synon. : Tarnia visceralis socialis granulosa (Goze) ; T. granu- 

 losa (Gmelin) ; Vesicaria granulosa (Schrauk) ; Hydatigena granu- 

 losa (Batsch) ; Hydatis erratica (Blumenbach) ; Polycephalus 

 hominis (Goze) ; Polyc. granulosus (Zeder) ; Polyc. humanus 

 (Zeder) ; Polyc. Echinococcus (Zeder) ; Echinococcus veterinorum 

 (Rudolphi et plurimi autores) ; Echinoc. Giraffce (Gervais) ; 

 Echin. Simice (Rudolphi aliique) ; Echin. granulosus (Rudolphi) ; 

 Echinoc. Infusorium (Leuckart) ; Echinoc. polymorjjhus (Diesiug). 



[Taenia matura : Tcenia minima, ad 3 mill, longo, corpore 3- aut 

 4-articulato ; capite subgloboso, 03 mill, lato ; rostello parvulo, 

 rotundato, 0T25 mill, longo ; osculis suctoriis magnis (0T3 mill.) ; 

 animalis in duplice ordine positis 28 — 36, quorum majores ex 

 Leuckartii mensura 0*045, minores - 038, ex meis mensvris 0034 et 

 0028 habent ; collo longiusculo ; articulis 3 — 4, quorum ultimas 

 toto corpore longior (2 mill, long., 0-6 mill, lat.) est. Utero 

 mediand loculis et stolonibus nee ramis propriis instructd ; ovulis 

 ovalibus, 0-034 long, et 0*030 lat., testa 0-0019 mill, crassd, cavitate 

 interna 0-027 lat. et 0030 long. 



Habitat : In Canis domestici, imprimis hi Ca?iis lanii fortasse 

 etiam in Canis Lupi tubo intestinali.~] 



Scolex quiesceus=Echinococcus veterinorum seu scolicipariens : 

 Vesica minus pellucida, membranacea, in pariete ad 1 — 2 mill. 

 crassa, ex pluribus 0'005 — - 01 mill, crassis lamellis concentricis 



1 See, on this subject, a paper by Professor Huxley " On the Anatomy and Develop- 

 ment of Echinococcus veterinorum" in ' Proceedings of Zoological Society of London,' 

 December 14th, 1852.— Ed. 



