ON THE AJNJGUILLULID^. 141 



5, E. Grubii. 



Grube, Ausflug nach Triest und dem Quarnero, 1861. — Eberth, Unters. iiber Nemat., p. 22. 



17. ANTICOMA', Bastian. 



Odontobius, Eberth. 



Gen. Char. Body tapering at extremities. Caudal sucker rather small ; sucker-tubes 

 undeveloped. Integument plain ; short rows of opposite setae on lateral aspects of 

 anterior extremity ; also cephalic setse, and others more or less scattered over pos- 

 terior part of body of males ; papillae absent. Pharyngeal cavity none. (Esophagus 

 not distinctly muscular, widening posteriorly, surrounded by ring near its middle. 

 Intestine mostly covered with rather pale granules having a tessellated arrange- 

 ment. Vulva about middle of body. Uterus bifid. Spicules two, curved. Accessory 

 piece wanting. Supplementary organ small, simple, tubular. Ocelli absent. Vaginal 

 glands two, pyriform, equal ; anal two, medium-sized, nucleated. Excretory ventral 

 gland opening opposite anterior of oesophagus. Lateral canals narrow, cellular. 

 Movements moderately active. 



1. A. Eberthi, n. sp. (Plate XI. figs. 143-145.) 

 Female, length J", breadth ywg"- 



External Characters. — Body whitish, slender, tapering considerably at extremities, 

 especially at posterior, which is filiform. Head bluntly rounded, provided with a circlet 

 of 6-8 well-marked setae, whilst laterally, at a distance of e^" from anterior extremity, 

 on each side, there is a row of 5 or 6 setae extending at right angles from body. Integu- 

 ment plain. 



(Esophagus ^th of total length, gradually widening posteriorly, embraced by ring near 

 its middle. Intestine well covered with light-coloured tessellated fat-particles. Anus 

 ■^" from posterior extremity. Vulva considerably anterior to middle of body, yo" from 

 anterior extremity. Uterus bifid ; segments symmetrical. Anal glands two. Excretory 

 ventral duct opening opposite termination of anterior ^rd of oesophagus. 



Male, length \", breadth ^^". 



Posterior extremity having a well-marked row of setae in mid-abdominal region, above 

 and below anus. Anus tss" from posterior extremity. Spicules curved, pointed, en- 

 larged at upper extremities. Supplementary organ g-g-5" above anal cleft, oblique, simple, 

 tubular, rgW" long. . 



Hab. About the roots of Corallina officinalis, tide-pools, Palmouth. 



2. A. LiMALis, n. sp. (Plate XI. figs. 146-148.) 

 Female, length ys", breadth 2^". 



External Characters. — Body whitish, tapering considerably anteriorly, and also at 

 posterior extremity, which is rather long and filiform. Head slightly rounded, provided 



' avrioi, opposite, and ko/^jj, hair, on account of the opposite rows of setae on the lateral aspects of the cervical 

 region. 



