( 25 ) 



Body flattened, elliptical, perfectly smooth and glistening. Head 

 transversely elliptical, arched in front ; neither lateral nor me£an lobes. 

 Internal antennae three-jointed. External antennae : second joint of 

 peduncle not swollen at base. Tige three-jointed; articulations rounded, 

 tumid, the last terminating in a hair, a long spine at apex of fourth 

 and fifth articulations, all the articulations both of peduncle and tige 

 densely hairy. Coxa) of abdominal rings somewhat linear; abdomen 

 abruptly narrower than seventh cephalothoracic ring. Last ring 

 broadly triangular ; apex acute. Abdominal false feet, last pair, attached 

 to exterior margin of ultimate ring, uncovered. Peduncle somewhat 

 quadrilateraL Ischium trigonal, spinous along edges, fine hairs be- 

 tween spines, with a slender filament at its apex. Accessory appendage 

 not quite half length of ischium rounded, hairy. Accessory lobe tri- 

 angular, distinct, nearly attaining apex of peduncle. 



Colour fulvous, with dark black patches, a dark stripe generally 

 along median line. A pale salmon-coloured variety was brought me by 

 E. Percival "Wright, Esq., jfrom Wexford, which I have found since rather 

 common on Bray Head, county of Wicklow, and occasionally about 

 Donnybrook, county of Dublin. 



Habitat : dry places among leaves, also among sand hills, along sea- 

 shore, under stones ; common near sea. 



Habits : runs rapidly, feigns death, but does not roll into a balL 



Localities : Ireland — Dublin, extremely common ; "Wicklow, Meath, 

 (Wexford and Cork, E. Percival Wright, Esq.), Belfast (A. H. Haliday, 

 Esq.) England — Middlesex, Essex, Kent, common. 



A species which has been much misunderstood, although an ex- 

 tremely common species. 



Family.— ITEAD-S:. 



Genus. — Philougria (<(>t\os v^poi) (mthi). 



1. — Philougria celer (mihi). Plate XXIL, Fig. 1. 



Body semi- flattened, elliptical, perfectly smooth and shining. Head 

 oval, twice as broad as long ; neither lateral nor median lobes extant ; 

 antennal plate attaining to frontal line. Eyes small, oval, situated at 

 posterior angle of head. Internal antennae small, inconspicuous, three 

 ?two ?) jointed. External antennae moderate in length, generally curved, 

 folded in form of (sj ). Peduncle five-jointed, attached to detached 

 segment (epimeral ?) of ring, hence apparently six-jointed. First arti- 

 culation very short, transverse; second, obtusely triangular, longer 

 than first ; third, globular equal to second ; fourth, elongated, slender, 

 sides parallel, equal to second and third conjoined, its exterior superior 

 angle truncate, inner angle ending in a long hollow spine ; fifth, slen- 

 derest, and slightly longer than fourth, sides nearly parallel, internal 

 margin produced into four angular eminences, each of which bears a 

 short spine, external angle terminating in a filament, external border 

 hairy. Tige five-jointed, filamentous ; articulations cylindrical, gradually 



