1850.] 97 



3. PSNTASTOMUM EURYZONOM, Dieshli 



"S> 



Linguatula Diesingii, Van, Beiieden.; Bull, de I'Acad. Roy. des Sc. de Brux. 

 1848 ; Mem. de I'Acad. de Brux. xv. An. Sc. Nat. 3 ser. xi. 



Pentastomum eur3'zonum, Dies. Syst. Helminth. 



Body cylindroid fusiform, curved, posteriorly subacute. Color yellowish 

 white, opaque. Annulations under 20, with wide intervals. Head plano-con- 

 vex; mouth round. 



Whole length 6 lines ; breadth anteriorly 1 line, of antepenultimate annulua 

 3-5ths of a line. Mouth l-40th 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 Cynocepha- 

 lus porcarius. 



4. Pentastomum proboscideum, Rud. 



Echinorhynchus Crotali, Humboldt. Ansicht d. Natur. 1 Aufl. 



Distoma Crotali, ib. ; Rud. Entoz.hist.il. 



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



Polystoma proboscideum, Riid. Mag. d. Berl. Gesell. Nat. Fr, VI. 



Linguatula proboscidea, Van Beneden, Mem. d' I'Acad. de Brux. xv. 



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



Pentastomum proboscideum, Rud. Synop. ; Humb. Ans. d. Nat. ; Bremser, 

 Icones ; Diesiug, An. d. Wien. Mus. ; Syst. Helminth. I. 



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

 acute. Color yellowish white; integument translucent. Annulations 36, becom- 

 ing indistinct towards the extremities. Head round, mouth round. Male fur- 

 nished with two short projecting papillae just above the mouth ; penis papilla- 

 form, projecting l-4th of a line. 



Length of female 2h to 3i inches, breadth of head 2i lines, narrowest part of 

 body 1 line, just anterior to posterior dilatation, which latter is 3 lines long by 1 J 

 broad. Length of male 1 inch 3 lines to 1 inch 5 lines ; breadth of head \i lines > 

 narrowest part of body h line; breadth of posterior dilatation 3-5ths of a line. 



Habitation and Remarks. I found six females, four males, and a young indi- 

 vidual of this species 4i lines long in the pulmonary cavity of a Boa constrictor. 

 The form of the body in the male and female is the same. 



5. EcHi.NORHYNCHus ovATUs. Body compressed ovate, posteriorly subacute, 

 curved, yellowish white, opaque, presenting 12 to 14 transverse corrugations ; 

 neck distinct, short, cylindrical. Proboscis globular, armed with 6 rows of re- 

 curved booklets. 



Length 2 lines, greatest breadth 1-10 inch, greatest thickness 3-5 line. Pro- 

 boscis i line. 



Habitation. Two individuals were found in the iliac portion of the small 

 intestine of Felis leopardis. 



6. Echinorhynchus tortuosus. Body brownish white, opaque, very much 

 contorted and transversely corrugated, subcompressed, dilated just below the 

 middle, attenuated towards the extremities, most so anteriorly, posteriorly re- 

 curved and obtuse. Neck short. Head subglobular, armed with 4 rows of sim- 

 ple recurved booklets. 



Length 2 inches 8 lines ; greatest breadth 1-7 inch ; greatest thickness 1 line; 

 diameter, 1 line from the neck, 1-5 of a line ; from the posterior extremity 4-5 

 of a line. Proboscis and neck 1-5 line long. 



13 



