AN ATTEMPT ÏO REVISE THE FAMILY (( LIXGUAïULIDAE )) 



63 



DiAGNOsis. — « Corpus subfusiforme, retrorsum attenuatam, 

 extremitate caudali bifurcatum, annulato-plicalum, aunulis linea- 

 ribus. Caput obtuse triangulare, depressiusculum. Os ovale margine 

 lato calloso apice truncato, inter bothria obtuse triloba (in formam 



Fig. 8. 



Porocephalus bifurcatus Diesing. — A, head X 7 ; B, animal, 

 natural size. After Diesins;. 



coni truncati disposita) situm, hamulis geminatis inaequallbus. 

 Long. fem. 20-22 mm. ; crassities antice 2,2 mm., post. 1, 12 mm. » 

 — Leuckart. 



Habitat. — In the abdominal cavity behind the lungs of Cohtber 

 Lichtenstnni {Drymobius bifossatus), on the mesentery of Coluber 

 flaviventris {Zamenis constrictor) and in the lungs of Boa constrictor 

 and Amphisbseiia flavescens {A. alba). 



Leuckart is of the opinion that thèse spécimens which Diesing 

 described and drew^ were immature young forms. 



There are about 40 rings, in some of the Vienna spécimens, but 

 they could not be counted in ail. 



5. — Porocephalus clavatus Lohrmann (1). 



Synonym. — Pentastomum davatum Lohrmann. 



DiAGiNOsis. — Body of the adult female club-shaped, slighlly 

 flattened on the ventral surface ; gi-eatest width at posterior limit 



(1) Àrcliiv fur Nalurgescli., .lahrg. LV, 1S«'.), p. ;j3(i. 



