DUBLIN NATXTEAL HI8T0BT 80CIETT. 1 13 



Family.— PHILOUGRID^. 



Genus 1. — T&ichoniscus {Brandt). 



Genus 2. — Philouoria (Kinahan). 

 Itea {Koch) (in part). 



Telson coxcb pcrparvulaB. Pleopoda posteriora nuda, in sinu mar- 

 ginis exterioris telson articulata ; basis triangularis ; ischium appendi- 

 culatum, trigone-subulatum ; lobus accessorius satis magnus. Anten. 

 extern. 3 articulat®. Antenn. extern, pedunculum non lobatum; filamen- 

 tum subulatum, 5 articulatum Iteve, filo abeuns. Cingulum abdominis 

 coxa), primi parvse, 2di, 3tii, 4ti, 5tique lineares. Carapacis fix)n8 nee 

 mediant nee 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 leevi, splendido, eUiptico. Antenn. intern, parvulis incon- 

 spicuis. Antennis extemis ut gernis: Telson supra pleopod. posterior, 

 maxime excavato, truncato-triangulari, apice emarginato. 



Sub musco, frondibus, lapitlibusque ubique in locis madidis totam 

 per Hibemiam et Angliam, ha)c species, dispersa esse, videtur, rarius in 

 Comitatibus meridionalibus. 



Longitude, -15 unc. 



2. — Philovgria vivida {Koch, sp.). 



Corpore laevi, splendido, oiali. Telson truncat^-triangulato ; apice 

 psene recto, superne profunde sulcato, non emarginato. 



Colore : fusco subtilissime albide-maculato. 



Sub musco, lapidibusque in coUibus ad "Portlaw, Com. Waterford,'* 

 Hibemiam, non rare inveniam. 



Longitude, -25 unc. 



3. — Philougria rosea {Kochy sp.). 



Corpore scabro, tuberculato. Oculis minutis. Antennis intemis, 

 conspicuis, ante frontem extendentibus. Abdominis cingulis, Imo, 2do, 

 3tioque, granulatis ; 4to, 5toque Isevibus. Telson lateribus excaratis, 

 apice truncate, recto ; ceteris ut Phil, riparia. 



Colore miniaceo-rubro, albido suffuse, aut albo. Longitude, '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 antenna), 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, 



