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Show 430 UTRIOULARIA OLANDESrriN A. CHAP. XVII. being directed to the same side ; the two longer ones being central, and the two shorter ones on the outside. The plants were collected in the middle of July; and the contents of five bladders, which from their opacity seemed full of prey, were examined. The first contained no less than twenty-four minute fresh-water crustaceans, most of them consisting of empty shells, or including only a few drops of red oily matter; the second contained twenty; the third, fifteen ; tho fourth, ten, some of them being rather larger than usua1; and the £fth, which seemed stuffed quite full, contained only seven but five of these were of unusually large size. The prey: therefore, judging from these five bladders, consists exclusively of fresh-water crustaceans, most of which appeared to be distinct species from those found in the bladders of the two former species. In one bladder the quadrifids in contact with a decaying mass contained numerous spheres of granular matter, which slowly changed their forms and positions. U TRIOULARIA OLANDESTIN A. This North American species, which is aquatic like the three foregoing ones, has been described by Mrs. rrreat, of New J ersey, whose excellent observations have already been largely quoted. I have not as yet seen any full description by her of the structure of the bladder, but it appears to be lined with quadrifid processes. A vast number of captured animals were found within the bladders; some being crustaceans, but the greater number delicate, elongated larvre, I suppose of Culicidre. On some stems, "fully nine out of every ton bladders contained these larvre or their remains." The larvre "showed signs of life from twenty-four to thirty-six hours after being imprisoned," and then perished. CHAP. XVIII. UTRIOULARIA MONTANA. 431 CHAPTER XVIII. UTRICULARIA (continued). Utricula1·i:x montana - Description of th bl -ld h . e au ers on tho subter-ranean c It r 1dz o· mes -t Prey captured by the bladde r. of P1 a nts under u ure an ma s ate of nature-Absorption by tho quad ·'fid cesse. s and glan d ~-T u b ers servm. g as reservoirs for nw ateprr-o- V: arwus other species of U tricularia- Polypompholyx - Gonlisoa different natur.e of the trap for capturing prey- Diversified methods by whiCh plants are nourished. U TR~OULARIA MONT AN A.-This species inhabits the tr~pical. parts of South America, and is said to be epi~hytic; but, judging from the state of the roots (::hizomes) of some dried specimens from the herbarium at Kew, it likewise lives in earth, probably in crevices of rocks. In English hoth~ uses it is grown in peaty soiL Lady Dorothy Nevill was so kind as to give me a fine plant, and I received another from Dr. Hooker. The leaves are entire, instead of being much divided as . ' In the foregoing aquatic • FIG. 26. species. They are elongated, (Utricularia montana.) about 1~ inch in breadth Rhizome swollen into a tuber· the . ' branches bearing minute bladder;· of .and furnished with a dis- natural size. ' tinct f~otstalk. The plant produces numerous colourless rhizomes, as thin as threads, which bear minute bladders, and occasionally swell into tubers, as will |