XXIV 



LIST OF PLATES. 



TO FACE 

 PAGE 



PLATE 



I. — CEcistes umhella No. 1 1 



II. — ConocMlus volvox 



III. — Limits of Microscopic Vision 



IV.^— New Sense-organs iu Insects ,• 



\.—Dactylocalyx Stutchhuryi{Sollas) No. 2 122 



VI.- „ „ .. .. 



VII. — Spicules of Dactylocahjx pumiceus 

 VIII.' — Spicules of Dactylocalyx pumiceus and D. Stutchburyi 



1^ 

 122 

 122 



IX. — Teg eocr anus latus No. 3 225 



, X. — Nothrus theleproctus, Tegeocranus elongatus „ 225 



XI. — Tegeocranus coriaceus, T. lahyrinthicus, and Sciitovertex sculptus „ 225 

 XII. — Diagrams exhibiting the Path of a Kay through ToUes' ^ 



Immersion Objective „ 269 



' iDevelopment and Retrogression of the Fat-Cell ,. .. No. 4 353 



XV. — Hcteropora pelUculata, Operculum of Myriozoum suhgracile, 

 Operculum of Cellepora, Cellepora sp., Hcteropora cervicornis 



D'Orb. .. ,. ■ „ 390 



XVI. — Halosphcera, a New Genus of Unicellular Algaj „ 458 



XVII. — Alectona Millari n. sp No. 5 493 



XVIIa. — Bhaphidotheca affinis n. sp., Aphrosina informis nov. gen. et sp. „ 500 



XVIII. — Notommata Wcrneckii, and its Galls on Vaucheria terrestris .. „ 530 



XIX. — Corrosion as a Hiatological Method „ 612 



XX. — Cothurnia corrugata No. 6 653 



XXI. — New Species of Diatomaceae from the Caspian Sea . . . . „ 677 



^^jj-~JMorphology of Vegetable Tissues No. 7 801 



^-^-y' \Anatom.y oi Leptodora hyalina „ 825 



XXVI. — Monobia confluens „ 901 



