DUBLIN NATURAL HISTORY SOCIETY. 
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Family.—PHILOUGEHm 
Genus 1.— Trichoniscus {Brandt). 
Genus 2.— Philougria ( Kinahan ). 
Itea {Koch) (in part). 
Telson coxae perparvulae. Pleopoda posteriora nuda, in sinn mar- 
ginis exterioris telson articulata; basis triangularis; ischium appendi- 
culatum, trigone-subulatum; lobus accessorius satis magnus. Anten. 
extern. 3 articulatae. Antenn. extern, pedunculum non lobatum; filamen- 
tum subulatum, 5 articulatum laeve, filo abeuns. Cingulum abdominis 
coxae, primi parvae, 2di, 3tii, 4ti, 5tique lineares. Carapacis frons nec 
mediane nec lateraliter lobatus. Antennarum superiarum cingulum infra 
oculos lobo abeuns. ( Ph . riparia, Ph. rosea, Ph. vivida.) 
1 . —Philougria riparia (Koch, sp.) Plate XXIII., Fig. 1 . 
Corpore laevi, splendido, elliptico. Antenn. intern, parvulis incon- 
spicuis. Antennis externis ut genus. Telson supra pleopod. posterior, 
maxime excavato, truncato-triangulari, apice emarginato. 
Sub musco, frondibus, lapidibusque ubique in locis madidis totam 
per Hiberniam et Angliam, haec species, dispersa esse, videtur, rarius in 
Comitatibus meridionalibus. 
Longitudo, *15 unc. 
2. — Philougria vivida (Koch, sp). 
Corpore laevi, splendido, ovali. Telson truncate-triangulato ; apice 
paene recto, superne prof unde sulcato, non emarginato. 
Colore: fusco subtilissime albide-maculato. 
Sub musco, lapidibusque in collibus ad “Portlaw, Com. Waterford,” 
Hiberniam, non rare inveniam. 
Longitudo, *25 unc. 
3. — Philougria rosea (Koch, sp.). 
Corpore scabro, tuberculato. Oculis minutis. Antennis internis, 
conspicuis, ante frontem extendentibus. Abdominis cingulis, lmo, 2do, 
3tioque, granulatis; 4to, 5toque laevibus. Telson lateribus excavatis, 
apice truncato, recto; caeteris ut Phil, riparia. 
Colore miniaceo-rubro, albido suffuso, autalbo. Longitudo, *15 unc. 
In horto, cellariisque, ad Plymouth, Com. Devon, Angliam, amicus 
meus Car. Spence Bate, F. L. S., hanc speciem observavit, ubi etiam non 
rarius egomet inveni. 
Philougria (Kinahan), Itea (Koch, in part). 
Body flattened; no lateral or median lobes to the front; internal 
antennae three-jointed; external antennae, second articulation rounded, 
unlobed; tige subulate, five-jointed, smooth; posterior pleopods com¬ 
pletely uncovered, articulated in a notch at posterior margin of telson. 
Peduncle (basis) triangular, appendiculate; Ischium trigonal, smooth, 
vol. v.— proc. soc. 2 d 
