51(5 



INDEX. 



Sponges, on deep-sea, from the At- 

 lantic, 226, 307, 388, 458. 



Stebbing, Eev. T. R. R., on new 

 and little-known ampbipodous 

 Griistacea, 443. 



Stecker, A., on the development of 

 the ova of Chthonius, 197. 



Stelletta, new species of, 403. 



Stenellipsis, new species of, G7. 



Streptelasma, on the structure of, 

 94. 



Suya, new species of, 412. 



Sympedius, characters of the new 

 genus, 65. 



Syncalus, characters of the new 

 genus, 20. 



Tauber, P., on the fecundation of the 

 egg in the common fowl, 3G9, 511. 



Teracolus, new species of, 486. 



Terebratula, new species of, 250. 



Terias, new species of, 485. 



Thallophytes, on some, parasitic 

 within recent Madreporaria, 268. 



Thelyphassa, description of the new 

 genus, 58. 



Themiscyra, new species of, 126. 



Theriodonts in Permian deposits 

 elsewhere than in South Africa, 

 evidences of, 186. 



Thomson, J., on the chief generic 

 types of the palaeozoic Corals, 68. 



Trachvphlreus, new species of, 59. 



Trecul, A., on the capture of Rattle- 

 snakes, and on the association of 

 these serpents with a small Owl 

 and a little Maraiot, 439. 



Trevelyana, new species of, 145. 



Trigonia acutirostra, on the disco- 

 very of, in the living state, 273. 



Tullbergia, characters of the new 

 genus, 324. 



Tychanus, characters of the new 

 genus, 64. 



Ulonotus, new species of, 18. 



Ursus, new species of, 43, 



Vesperugo, new species of, 500. 



Volvox dioicus, on the reproduction 

 of, 274. 



Wallich, Dr. G. C, on deep-sea 

 researches, 78, 359. 



"NVaterhouse, C. O., on new species 

 of Coleoptera from Rodriguez, 105 ; 

 on two new species of Cetoniidse, 

 422. 



"SVilkiuson, C. S., on a collection of 

 geological specimens fi'om New 

 Guinea, &c., 190. 



Williamson, Prof. W. C, on the 

 organization of the fossil plants of 

 the Coal-measures, 268. 



Wood-Mason, J., on a new Rodent 

 fi-om Central Asia, 76 ; on the 

 mode in which the young of the 

 New-Zealand Astacidas attach 

 themselves to the mother, 306 ; 

 on new species of Mautidse, 337, 

 441 ; on the femoral brushes of 

 the Mantidse, 438 ; on the geogra- 

 phical distribution of Schizoce- 

 phala, 439 ; on some remarkable 

 species of Mantidse, 506 ; on a 

 species of lapyx, 511. 



Xanthidium, new species of, 473. 



Xvlodes, characters of the new genus, 

 ll6. 



Xylotoles, new species of, 66. 



Ypthiuia, new species of, 481. 



END OF THE EIGHTEENTH VOLUME. 



PRINTED BY TAYLOR AND FRANCIS, 

 SED LIOX COURT, FLEET STIIEET. 



