AN ATTEMPT TO REVISE THE FAMILY « LINGUAïULIDAE )) 



73 



27 without counting (lie terminal joint, and Mazza figures 28 ; 

 nevertiieless the latter considers P. moniliformis as a synonym of 

 P. crotali which lias 40 rings. According to Diesing the position of 

 the mouth is relative to the hooks, différent in the two forms being 

 behind the inner pair in P. moniliformis and betv^^een them in 

 P. crotali. I was at lîrst inclined to consider this species as a form 

 of P. armillatus (they are found in the same host), but P. armillatus 

 lias but 19 or 20 rings. The moniliform appearance of the rings 

 evidently dépends on the state of contraction the parasite is in 

 when killed. The outline of Diesing's spécimen differs from that of 

 Mazza's. 



Some spécimens taken from the lungs of a Python reticulatus at 

 Tring, for which I am indebted to thekindnessof MrC. N. Rothschild, 

 resembled in their body P. annulatus, but they hâve no neck and 

 the shape of the head and mouth is différent. 



15. — POROCEPHALUS NAJAE-SPUTATRICIS Lcuckart. 



Synonym. — Pentastomum najae sputatricis Leuckart. 



DiAGNOSis. — « Corpus in statu imperfecto cylindricum, retror 

 sum attenuatum, postice acuminatum. Cé- 

 phalothorax minime distinguendus, fronte 

 rotundatus. Annuli circa 50 brevissimi, 

 serrulati , duobus ordinibus stigmatum 

 alternatim dispositis perforati. Harauli ge- 

 minati inaequales, altero (accessorio) subu- 

 lato, altero (principali) unciforini, fulcro 

 lato, breviusculo , rotundato insidentes , 

 anteriores posterioribus paulo majores. 

 Uncinorum curvatura ad basin approximat 

 apice paene recto. Longitudo = 4,5 mm., 

 latitudo maxima = 0,6 mai. 



» Status evolutus hucusque incognitus. » 

 — Leuckart. 



Fig. 18. — Porncephalvs 

 najne -sputatricis 

 Leuckart. — Hook X 

 175. After Leuckart. 



Habitat. — Encapsuled in the abdominal muscles and peritoneum 



of Naja sputatrix (Naja tripudians). 



