DESCRIPTIONS OF PLATES, 303 



PLATE XX. 



ALSO ILLUSTRATIVE OF DR. KINAHAN'S PAPER. 



Fig. 



1 . Philoscia muscorum, much enlarged. The antennae disproportion- 



ately large. 



2. Abdominal false feet ( J ), last pair, a, Peduncle, b, Accessory lobe. 



c, Ischium. /, Accessory appendage. 



3. Fifth and sixth abdominal rings, a, Abdominal false feet. 



4. Back view of head. 



5. Front view of head, a, External antennae. b, Internal antenna?. 



c, Superior margin, third segment. 



6. Internal antennae. 



7. Ligia oceanica, false feet. References as in Philoscia muscorum. 



8. Ultimate abdominal ring of ditto. 



9. Side view of orbit of ditto. 



10. Front view of orbit of head, a, External antennae, b, Eyes. ^Su- 



perior margin of third ring, d, Internal antennae. 



11. Back view of head of Oniscus murarius. e. Frontal line of head. 



c. lateral lobes. 



Vide page 258. 



