AN ATÏEMPT TO REVISE THE FAMILY (( LIXGUATULIDAE )) 65 



Habitat. — In the peritoneum of Crocidura [uUginusa, from 

 Burmali. 



7. — PoROCEPHALUS CROTALi Humboldt. 



Synonyms. — A. — Adult Forms. 



Echinorhynchus crotali Humboldt. 



Distoma crotali Humboldt. 



Polystoma proboscideiim Rudolphi. 



Limjuatula proboscidea van Beneden. 



Pentastomum moniliforme Ludwig, Mazza, Mégnin (in parte). 



Linguatula quadriuncinata Meyer. 



Pentastomum imperatoris Macalister. 



Pcntastojmim proboscideum Rudolphi and many others. 



B. — Larval Forms. 

 Pentastomum sub-cylindricum Diesing. 

 Pentastomum clavatum Wyman. 



DiAGNOSis. — « Corpus sub clavatum, retrorsumsensimattenuatum, 

 obtusum , annulato-plicatum , pllcis interdum evanescentibus. 

 Céphalothorax bene distinctus, clavatus, irons rotundata. Annuli, 

 quorum numerus est c. 40, stigmatum ordinibus plerumque 5-6 

 alternatim dispositis perforati. Hamulus validus, uncino bene 

 incurvato, crasse acuminato minutus. Fulcrum latum,longiuscu- 

 lum, optusum. Longitudo feminae usque ad 80 mm., maris ad 

 36 mm. Latitudo anterior fem. 6-7 mm., maris o mm., post. fem. 

 3-0 mm., maris 2 mm. Vix dubito, statum imperfectum hujus 

 speciei esse Pentastomum, quod Diesingius, in rébus helmintholo- 

 gicis peritissimus scrutator, noraine Pent. subcylindrici descripsit 

 et depinxit. Inferior magnitudine (long. 8-16 mm., lat. 2-2,2) forma 

 corporis numeroque annulorum et stigmatum plene congruit cum 

 Pent. proboscideo, neque multum discedit fulcro atque hamulo, cui 

 lamina chitinosa brevis, incurvata, loco hamuli accessorii juncta 

 est ». — Leuckart. 



Diesing mentions a variety (var. coarctatum) which occurs in tw^o 

 species of Coluber, C. Lichtensteini (Drymobius bifossatus) and 

 C. karros (Zamenis harros) (1). 



(1) Sjsleina Heluiinilium, I, I8i3U, p. 212. 

 Archives île l^arasitolocjie, 1, n" 1, 1898. 5 



