AN AÏTEMPT ÏO REVISE THE FAMILY (( LINGUATULIDAE )) 



7d 



ceplialum, and as I am inclined to agrée with Lohrmann who states 

 that « das Bild ist so abenteueiiich, » I do not propose to disturb 

 this arrangement. The figure of the head however, resembles that 

 of P. gracilis, but there the hooks are two-pronged. 



17. — PoROCEPHALUS PLAïYCEPHALus Lohrmann (1). 

 Synonym. — Pentastomum platycephalum Lohrmann. 



DiAGxosis. — The body of the adult female, nearly cylindrical, 

 greatest diameter sfiortly in front of the hiader end. Head flat, 

 blunt, only slightly smaller than the body. 

 Hooks slender, widely separated from each 

 other, the mouth opening is a distinct oval, 

 the long axis being longitudinal, it is situated 

 between the first pair of hooks. About 70 rings 

 which are scarcely visible. Length 23 mm., 

 breadth 2,8 mm. Hook-glands consist only of 

 two glandular bodies attached to the alimen- 

 tary canal. — Lohrmann (translated). 



Habitat. — Unknown, perhaps in the Alligator. 



Fig. 20. — Porocepha- 

 lus platyceplialus 

 Lohrmann X o- 

 After Lohrmann. 



18. — POROCEPHALIJS SUBULIFERUS 



Leuckart. 



Synonym. — Pentastomum subulifernm 

 Leuckart. 



DiAGNOsis. — « Corpus cylindricum, 

 utrinque clavatum obtusum, annulato- 

 constrictum. Céphalothorax bene distinc- 

 tus, ventre planiusculus. Annuli c. 40, 

 brèves, paullulum prominentes, sligma- 

 tibus in duas séries adeo irregulares 

 dispositis, ut facile nonnumquam très 

 vel quatuor séries adesse credas. Hamuli 

 inaequales, posteriores geminati, ante- 

 riores simpHce majores, fulcro brevissi- 

 mo, lato, incurvato insidentes. Uncinus 



(1) Archiv fur Naturgesch., Jahrg. LV, 1889, 

 p. 336. 



Fig.21. — Porocephalus subu- 

 liferus Leuckart. — Hook 

 X 87. After Leuckart. 



