( 19 ) 



joint broadly lobed internally. Tige two-jointed ; articTiIations semi- 

 flattened, hairy. Coxae of first, second, and sixth abdominal rings obso- 

 lete. Abdominal false feet of last pair articulated beneath basal angles 

 of last ring. Peduncle triangtilar, lamellar, three-fourths uncovered. 

 Accessory lobe well-marked, arising from base of peduncle, covered by 

 last ring. Ischium compressed, trigonal, lamellose, acuminate, unco- 

 vered. Accessory filaments curved, trigonal, terminating in a filament 

 nearly completely covered by last abdominal ring. 



Genus 3. — (?) Piattaethtjs {Brandt). 

 Genus 4. — (?) Deto ( Guerin). 



Family.— LIGID^. 

 Genus 1. — Ligia {Brandt). 



Body flattened. Head transverse. Internal antennae inconspicu- 

 ous. External antennae : second joint, peduncle without lobe. Tige 

 multi-articulate ; segments globose, cupped, hairy. Coxae of abdominal 

 rings : first and second small ; third to sixth, well developed. Abdominal 

 false feet articulated in notch at end of last ring, unconcealed. Pedun- 

 cle quadrilateral. Accessory lobe inconspicuous from truncate apex. 

 Ischium somewhat trigonal, scabrous. Accessory appendage as long as 

 ischium, terminating in a filamentous hair. 



Family.— PHILOSCID^. 



Genus 1. — Ligiditjm {Brandt). 

 Genus 2 (?). — Styxonisctjs {Bana). 

 Genus 3 (?). — Titanethes {Schiodte). 



Genus 4. — Philoscia {Latreille). 



Body flattened. Head rounded. Antennal ring arcuate, attaining 

 to, but not surpassing, frontal line. Internal antennae inconspicuous. 

 External antennae, second articulation, rounded without lobe. Tige, 

 three-jointed articulations rounded, hairy, terminating in a filament. 

 Coxae of sixth abdominal ring obsolete, first to fifth narrow, linear. 

 Abdominal false feet, last pair : peduncle quadrilateral, transverse, ar- 

 ticulated to exterior margin of last ring, uncovered. Accessory lobe 

 distinct, attaining apex of peduncle. Ischiimi : base flattened, acumi- 

 nate, almost trigonal, bi-articulate, hairy ; accessory filament falciform, 

 hairy, apex blunt. 



This genus has been misdescribed by all authors except Zadach, who 

 gives a very fair description of it in his monograph, already quoted. 



6.— (?) ScYPHAX {Bana). 

 (Scyphax and Philoscia may form the type of a separate family.) 



