1862,] DR. L. PFEIFFER ON NEW CYCLOSTOMACEA. I 15 



6. Tetrarhynchus auADRiPAPiLLOsus, Baird. 



Head of considerable size ; bothria large, rotundate-oval. Neck 

 long, slender, terminating in an enlarged body enclosed in a sheath, 

 which gives off at its lower part four papillse disposed in such a 

 manner as to interlock with each other and form a terminating coni- 

 cal point. 



Length of whole animal about 3 J lines. 



Hab. Taken from the liver of Alejpoeephalus, sp., at Madeira. 

 {Mus. Brit.) 



For these three species of Tetrarhynchus I am indebted to J. Yate 

 Johnson, Esq., C. M. Z. S. 



7. BoTHRiocEPHALUs (Tetrabothrium) junceus, Baird. 



Bothria four, attached to the head by their face, large and some- 

 what auriculiform. Head elliptical. Neck slender ; first segments 

 very fine, gradually becoming broader, but in no part exceeding half 

 a line in breadth. Apertures of genital organs unilateral. 



Length upwards of 4^ inches ; breadth of neck y^th of a line ; 

 broadest segments about \ a line. 



Hab. Intestines of the King-Vulture {Sarcorhamphus papa). 

 (Mus. Brit.). 



For this species I am indebted to Mr. E. Gerrard. 



4. Descriptions of Eight New Species of Cyclostomacea, 

 FROM THE Collection of H. Cuming, Esq. By Dr. L. 

 Pfeiffer. 



(Plate XII.) 



1. Rhiostoma hainesi, Pfr. (PI. XII. fig. 8). T. late umbili- 

 cata, depressa, solida, distincte et conferte striata, sub epider- 

 mide obscura fuscula, fiammulis angustis castaneis variegata ; 

 spira parum elevata, vertice minuto, corneo ; anfr. 5, depresso- 

 rotundati, idtimus infra peripheriam castatieo unifaseiatus, an- 

 tice longe solutus et dejlexus, a sutura ad tubulum longe recur- 

 vatum carinatus, ante tubulum introrsum apertus, extus leviter 

 incisus ; apertura obliqua, circularis ; perist. subduplicatum, 

 album, margine sinistra incrassato, dextro expanse, piano, pa- 

 tente. Operc. cyathiforme, extus planum, anguste spiratum, 

 marginibus anfractuum elevatis, membranosis. 



Diam. maj. 35, min. 25, alt. 12-14 mill. Ap. diam. 11-12 mill. 

 Hab. Camboja {M. Mouhot). 



2. Rhiostoma simflicilabre, Pfr. (PI. XII. fig. 7). T. late 

 umbilicata, depressa, solidula, leviter et confertissime striatula, 

 sub epidermide nitida lutescens, elegantissime et subtiliter cas- 

 taneo fiammulata ; spira breviter conoidea, vertice minuto, ob- 

 tusiusculo ; anfr. 5, depresso-rotundati, ultimus infra periphe- 

 riam castaneo unifaseiatus, antice longe solutus et deflexus, a 

 sutura usque ad tubulum recurvatum carinatus ; apertura 

 diagonalis, subcircidaris, intus ccerulescenti-margaritacea ; 



