94 MR. H. CHARLTON BASTIAN’S MONOGRAPH 
tt Caudal sucker absent. à 
“11. CEPHALOBUS. Série well marked. Head slightly bilobed. Pharyngeal cavity none, 
(Esophagus having rounded swelling posteriorly, containing a simple valvular apparatus, 
gland-opening opposite posterior part of esophagus. Uterus unsymmetrical. 
or small 
Ventral 
Males having caudal ale. 
= 
12. TYLELENCHUS. Spear with trilobed base. (Esophogus having a rounded muscular Swelling about 
its middle. Ventral gland-opening opposite posterior part of esophagus. 
Uterus unsymmetrical, 
Caudal ale narrow, unsupported. 
— 
sr 
-. 
. Ruaspırıs. Strie transverse and longitudinal. Pharyngeal cavity eylindrical. Esophagus having 
elongated swelling at middle, with rounded one at termination, containing a simple valvular ap. 
paratus. Uterus symmetrical, Caudal ale large, supported by rays. 
IT. MARINE. 
Spicules two, equal, solitary, or with one, two, or four accessory pieces. Occasionally a single sup. 
plemental organ in ventral region, above anus. Ventral excretory gland present in all (2). Caudal 
sucker universal. | 
* Integument plain, or with longitudinal markings. (Esophagus embraced by glandular (2) ri 
T Spicules solitary, or with a single posterior median piece. 
. SYMPLOCOSTOMA, Pharyngeal cavity elongated, oval, complex, crossed by lines or bars, and having 
a funnel-shaped body on its inferior aspect. Ocelli present or absent. Spicules long, solitary. 
. OxcHozarmus. Pharyngeal cavity large, oval, provided with three tooth-like projections, Oceli 
none(?). Uterus symmetrical or unsymmetri 
piece. 
ng. 
— 
A 
— 
V 
cal. Spicules solitary, or with a single accessory 
16. EvciELIDIUM. Pharyngeal cavity none LE À 
narrow, with or without a single median access 
"I7. AwTICOMA. Integument having a row of Opposite setze on dorsal and ventral surfaces. Ocelli 
none. Vaginal glands two, equal. Spicules solitary. Supplementary organ small. 
^18. PRANODERMA. Pharyngeal cavity small. 
plementary organ small. 
Ocellus mostly large and single. Spicules long, 
ory portion. 
Ocelli distinct, lateral. Spicules long, solitary. Sup- 
tt Spicules having two equal accessory pieces. 
^19. LePTOsOMA TUM. Pharyngeal cavity none. Ocell; 
eretory glandular organs two, 
small sucker-like prominence, 
^20. Exopuvs, 
distinct, dorsal, occasionally coalescing. Er- 
lateral, opening on either side of head. Supplementary organ à 
Pharyngeal cavity indistinct, surrounded by three separate teeth or jaws. Ocelli not 
distinct from Surrounding pigment. No esophageal ring, and integument with delicate transve 
as well as longitudinal strie. 
eg]; Linnosouos, Pharyngeal cavity cup-shaped. Œsophagus enlarged behind pharynx and also 
at posterior extremity, Œsophageal ring (?). Anal glands large. Accessory pieces recurved. 
* Al the animals belonging to the gen 
ed with a remarkable tenacity of life 
^ The species belonging to the gene 
hine i : rg ales being — 
provided with a supplementary ipiis aving this mark affixed to them are all distinguished by the m 
c Th H . i 
e males of the species belonging to these three Senera present the common character of reflexed accessory piect: 
era having this mark affixed to them have a modification of the ventral 
