32 RESEARCHES IN HELMINTHOLOGY AND PARASITOLOCiY. 



Linguatula Diesmgii, Van Beneden. ; Bull, de I'Acad. Roy. des 

 Sc. de Briix., 1848 ; Mem. de I'Acad. de Brux. XV. An. Sc. Nat. 

 3 ser. XI. 



Pcntastomuni eiiryzonum, Dies, Syst. Helminth. 



Body cylindriod fusiform, curved, posteriorly subacute. Color 

 yellowish white, opaque. Annulations under 20, with wide inter- 

 vals. Head plano-convex ; mouth round. 



Whole length 6 lines ; breadth anteriorly i line of antepenulti- 

 mate annulus 3-5ths of a line. Mouth i-4oth of an inch. 



Habitation . — I found five individuals of this species, enclosed in 

 C-shaped cysts, upon the surface of the liver beneath the peritoneum, 

 in a half-grown Cynocephalus porcarius. 



4. PcntasioDium ProboscideuDi , Rud. 



Ec/ii)ior/iy)ic/nis Crotali, Humboldt. Ansicht d. Natur. i Aufi. 



Distoina Crotali, ib. ; Rud. Entoz. hist. II. 



Porocephalus Civtali, Humb. Recueil d'Obs. de Zool. 



Polystonia proboscideuni, Rud. Mag. d. Berl. Gesell. Nat. Fr. VI. 



Linguatula pioboscidca, Van Beneden, Mem, de I'Acad. de Brux. 

 XV. 



Linguatula clavata, Wyman. Jour., Bost., Nat. Hist. Soc. Vol. V. 



Pentastomuni proboscideuni, Rud. Synop. ; Humb. Ans. d. Nat. 

 Bremser, Icones ; Diesing, An. d. Wien. Mus. ; Syst. Helminth. I. 



Body sub-clavate, broadest anteriorly, recurved, posteriorly dilated 

 ovate, subacute. Color yellowish white ; integument translucent. 

 Annulations 36, becoming indistinct toward the extremities. Head 

 round, mouth round. Male furnished with two short projecting 

 papilkt just above the mouth ; penis papillaform, projecting i-4th 

 of a line. 



Length of female 2^^ to 3}^ inches ; breadth of head 2jj lines; 

 narrowest part of body i line, just anterior to posterior dilatation, 

 which latter is 3 lines long by i >^ broad. Length of male i inch 

 3 lines to i inch 5 lines ; breadth of head i j-^ lines ; narrowest part 

 of body y^ line ; breadth of posterior dilatation 3-5th of a line. 



Habitation and Remarks. — I found six females, four males, and a 

 young individual of this species 4^2 lines long in the pulmonary 

 cavity of a boaconstrictor. The form of the body in the male and 

 female is the same. 



5. Echinorhynclius Ovatiis. — Body compressed ovate, posteriorly 

 subacute, cured, yellowish white, opaque, presenting 12 to 14 trans- 

 verse corrugations ; neck distinct, short, cylindrical. Proboscis 

 globular, armed with six rows of recurved booklets. 



