206 Oil Crustacea from the Firth of Forth. 



was taken ; it inhabited a tube a little longer than itself, 

 tormecl of hne black mud bound together with some kind of 

 glutinous substance. 



Petalomera decUvis, G. O. Sars. 



This little Cumacean was taken in the Firth of Forth some 

 time ago, but not identified at the time. The Rev. T. R R 

 Stebbing, M.A., to whom we are indebted for the name's of 

 these three species, states that Petalomera dedims "has 

 probably not yet been recorded as British." 



EXPLANATION OF THE PLATES. 

 Plate XV. 



Lichomolgus agilis, sp, n. 



Adult female, seen from above. Maj^n. 46-7 diam 



Anterior antennae. Magn. 190 diam. 



Posterior antennae. Magn. 127 diam 



First segment of body. Magn. 80 diam. a, rostrum • b ante 



rmSr'''fi'\7\°"' '^' r'''''"' ^"*^""*; '' mandible; 



/, maxilla • g, first foot-jaw ; h, second foot-jaw ; i first feet 



Rostrum (r) ; siphon {s). Magn. 9o diam. ^ ' ' ""^ 



Mandible ; maxilla («). Magn. 460 diam. 



Anterior foot-jaw. Magn. 460 diam 



Posterior foot-jaw of male. Magn. 253 diam 



Posterior foot-jaw of female. Magn. 253 diam 



-foot of first pair. Magn. 100 diam 



Foot of fourtJi pair. Magn. 190 diam. 



Foot of fifth pair. Magn. 380 diam. 



Abdomen of female. Magn. 80 diam. 



Abdomen of male. Magn. 80 diam. 



Plate XVL 



? Enter ocola eruca, Norman. 

 ^t 9 it'll ?™''l'' '"'" f""" ^^^''^- ^J«g°- 16-6 diam. 



'^g. 3. Adult female, seen from above. Magn. 345 diam 

 ±ig. 4. Anterior antennaj. Magn. 345 diam 

 ^g. 5. Posterior antenna. Magn. 247 diam. 

 ±ig. 6. Mandibles. Magn. 247 diam. 

 ^g. 7 Anterior foot-jaw. Magn. 690 diam. 

 ^tg. 8. Posterior foot-jaw. Magn. 345 diam 

 Iig. 9. Foot of first pair. Magn. 190 diam. 

 ttg. 10. Foot of fourth pair. Magn. 190 diam 

 Fig. 11. Abdomen of female. Magn. 40 diam 



