GIO 



armed with a tlouble row of about 800 minute liooklets, of two 

 ditferent sizes, tlie larger and smaller alternating, the larger 

 hooks 11 fi (Krabbe), 16 /i (Crety); smaller hooks 8 /i (Krabbe), 

 12 li (Crety). In the earlier stages (see below T. pluriuncina'ta) 

 the suckers are armed with 6-S concentric rows of instable 

 hooks which vary in size, but of simila/r form. Soickers small, 

 0.186mm to 0.196mni in diameter. Neck present, thin. Anterior 

 segments 0.195mm broad by 0.40mm long (after Crety, 1890, p. 2, 

 the figures should undoubtedly be reversed); middle segments 

 2mmi to 3mm broad by 1mm long; posterior segments 1.5mm long 

 by 2.omm broad. Genital pores irregularly alternate in about 

 the middle of the lateral margin. Male genitalia: In posterior 

 portion of segment; testicles 15-20 in number, 45 ^ in diameter, 

 distributed regularly in median field; the common vas deferens 

 takes origin in about the middle of the segment, medium por- 

 tion more or less sirmple, lateral portion convoluted; upon enter- 

 ing the cirrus pouch it swells into a vesicula seminalis, 53 f. 

 long by 39 u broad, distinct only in the younger segrnents; cir- 

 rus covered with extremely minute spines, visible only with an 

 immersion lense. Female genitalia: In anterior portion of seg- 

 ment. Ovary median near anterior margin, at first transverse, 

 in the older segments it becomes globose and occasionally ir- 

 regularly divided into two lateral halves, connected by a me- 

 dian portion which leads into the oviduct; in middle proglottids 

 transverse diameter of ovary 0.186mm; oviduct short, runs dis- 

 tally: vitellogene gland distal of ovary, in youngest segments 

 appears as a globular sac next to ovary, in older segments 

 further removed from it and much smaller than it, occasionally 

 divided; vitelloduct runs from middle of vitellogene gland prox- 

 imally; shell gland very small, situated between ovary and 

 vitellogene gland; vagina swells into a receptaculm seminis 58 

 II by 39 fi near the ovary; uterus forms rapidly, suppresses 

 genital glands, eggs arranged 4-6 or more in egg capsules. Ova 

 2S II by 24 n: hooks of oncosphere 11 /< to 17 ^ (Krabbe). 3 /i 

 to 4 /i (Crety), oncosphere 11 n. 



Type specimen; Berlin museum. 



Life history: Unknown. 



Host: Migratory quail (Coturnix coturnix) by Rudolphi and 

 Crety; (C. dactylisonans) by Ninni [Stossich"]. 



Geographical distribution: Italy, by Rudolphi. Crety. and 

 Minni. 



Blanchard (1S91B, p. 434) looks upon Crety's Taenia pUiriun- 

 cinata as synonymous with D. circumvallata. Crety's descrip- 

 tion of T. pluriunrinata is as follows: 



