BRITISH ASSOCIATION. 275 



Family.— PHILOSCIDA 



Genus 1. — Ligidium (Brandt). 

 Genus 2 (?). — Stylontsctjs (Dana). 

 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. Ischium : 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. 



5. — (?) Scyphax (Dana). 

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



Family.— ITEADJE. 



Genus 1. — (?) Teichontsctts (Brandt). 

 Genus 2. — (?) Itea (Koch, in part). 



Genus 3. — (?) Philotjoeia 



Body flattened. Head round ; no median or lateral lobes. Internal 

 antennae inconspicuous, three-jointed. External antennae : second joint 

 round, not lobed. Tige subulate, five-jointed; smooth. Coxae of first 

 abdominal ring small and inconspicuous ; second to fifth, narrow, linear, 

 well marked ; sixth, nearly obsolete. Abdominal false feet : last pair 

 completely uncovered. Peduncle somewhat triangular, articulated in 

 notch at posterior margin of last joint. Ischium trigonal, subulate, 

 smooth, terminating in a filament. Accessory lobe well marked, spring- 

 ing from side of, and nearly attaining, extremity of apex of peduncle. 

 Accessory filament long, subulate, filamentous, smooth. 



This genus is very closely allied to Itea, which is described by 

 Zadach as having the exterior margin of the peduncle of the abdominal 

 false feet free lateral processes of the front ; present beneath the supe- 

 rior frontal margin above the base of the antennae ; the internal an- 

 tennae one- jointed. Characters, if correctly given, sufficient to constitute 

 the above a genus. 



Some, perhaps, will be inclined to substitute the term genus for 

 family in the above Table, making sub-genera of most of the genera. 



