m 
AN ACCOUNT OF SOMK HELMINTHES COLLECTED IN THE SUDAN 
Rchino- 
rhynchits 
segmentatiis 
character is the arrangement of the genital papillio. In this species tliere are no papill® 
situated eitlier at the side of or anterior to the cuticular ring of the ventral sucker. Between 
this and the cloaca, and lying within the external range of these two structures, are three pairs 
of sessile papillae. The last pair lie just in front of the angles of the cloaca. 
Of post-anal papillae there are seven pairs ; two ventral, in line with the pre-anals and 
sessile ; five external, large, fleshy and supporting the cuticular expansions. The first pair 
of sessile ventral papillaj are small, and are situated immediately behind the angles of the 
cloaca; the second pair lie at the base of the third set of externals. The five pairs of 
external post-anal papill;e decrease in size and importance from before backwards. The 
most anterior lie almost ad-anally, and are by far the most conspicuous. The second and 
third pair are equidistant from the first pair, from one another, and from the succeeding 
fourth and fifth pairs, which a>’e very small, slender, and lie close together. The spicules 
are two in number, they are of equal size, long and slender, with slightly sickle-shaped curve 
at their distal extremity. They measure 0'9 mm. in length. 
In the female the genital pore lies almost exactly in the middle of the body. The 
vagina passes first of all forwards from the genital opening, and after a very short distance 
bends backwards, dividing into the two genital tubules which fill the bulk of the body cavity 
by their windings. The worm is oviparous, the eggs are 0’06 mm. xO'041 mm. in size, have 
thick clear hyaline shells and contain morula. 
In the female the anus opens 0’6 mm. from the tip of the tail. 
The only other detail of interest I need mention here is the presence of many large 
granular cells in the body cavity. They are very noticeable in many lletcrahis, but I can 
offer no explanation of their purpose. They do not come under observation in the closely 
allied genus Ascaris. 
Family, Stkongylid® 
Genus, Kalicephalus, Molin 
Kcdicophabus, sp. 
Psammopkis sibilans. Intestine. White Nile. 
P. sibilans is probably the host of a new species of Kalicephalus, a genus founded by 
Molin in 18G1 for certain bursate forms from South America, and since regarded by many 
as belonging to the genus Strongijlm. There can be no doubt from the mouth armature 
of the species described by Molin that the forms he examined belong to a properly separate 
genus, and that the specimens from Psammophis sibilans obtained by Dr. Wenyon are quite 
rightly to be placed under that group; but there does not appear in the descriptions given 
by Molin of the several original species of the genus sufficient detail to indicate upon what 
characters the differentiation of the species is to be made, and until such details are forthcoming 
regarding the species already named it is impossible to state exactly that the parasites now 
examined do not tally with one or other of them, although the difference in host and in 
geographical distribution renders it very likely that the forms described by Molin are 
specifically distinct. 
Ac.iNTHOCErHALA 
Genus, Echinorhynchus 
Ecliinorhynchus seguicntatus, Marval, 1902 
Guinea fowl. Numida ptilorhyncha. Intestine. White Nile. 
This species has been recently described and figured in the Archives de Parasitologic, 
Vol. V., p. 412, etc., in a paper, “ Etude sur quelques Ecbinorhyn(|ues d'Oiseaux,” by 
L. du Marval. To the naked eye the specimens bear a very close resemblance to Cestodes, 
owing to the transverse markings of the surface of the body. 
