NEMALEON. 



[ 535 



NEPHB03ELMIS. 



includes the following Sphcerice of the 

 British Flora cinnabar ina, coccinea, ochra- 

 cea, aurantia, rosella, citrina, Peziza, san- 

 guinea, epispliceria, &c. ; and several new 

 species are described by Messrs. Berkeley 

 and Broome. 



BIBL. Fries, Sum. Veg. 387 ; Berk. & 

 Broome, Ann. N. H. 2 ser. xiii. 467 ; Cooke's 

 Handb. 780. 



NEMA'LEON, Targioni. A genus of 

 Cryptoneniiaceae (Florideous Algae), con- 

 taining two British species, one, N. mukifi- 

 dum, not uncommon on shells and stones 

 near low-water mark. Its frond consists of 

 a somewhat cartilaginous, simple or once or 

 twice dichotomous cord, 3 to 6" high and 

 1 to 2" in diameter, of a dull purple colour. 

 The cord consists of a dense axis formed of 

 interlaced longitudinal filaments, clothed 

 with horizontal, dichotomously-branched 

 filaments, moniliform and coloured towards 

 the circumference of the cord. The fruit 

 consists of : -favellidia, consisting of glo- 

 bular masses of spores attached singly to 

 the filaments of the periphery, with a tri- 

 chogyne (PI. 4. fig. 12 c) ; and collections 

 of antheridia, consisting of minute hyaline 

 cells seated on the peripheral filaments, but 

 discharging spermatozoids (PI. 4. fig. 12 b). 



BIBL. Harv. Mar. Alg. 153, pi. 21 B, 

 Phyc. Br. pi. 36 : Derbes and Solier, Ann. 

 Sci. Nat. 3 ser. 'xiv. 274, pi. 35 j Thuret, 

 ibid. 4 ser. iii. 21. 



NEMAS'PORA, Fries. A supposed ge- 

 nus of Melanconiei (Coniomycetous Fungi), 

 the species of which present two forms, one 

 bearing minute conidia (Nemaspora), the 

 other spores (Zi&erfeZfo, Desmaz.), and which 

 probably also will be found to exhibit an 

 asciferous form. N. crocea, Pers., is common | 

 on beech trees, N. Rosce on roses aud lilacs. 

 They are at first minute gelatinous masses 

 of conidia, coherent into a nucleus under 

 the epidermis, devoid of a perithecium ; the 



rres finally exude as a gelatinous tendril ; 

 spores are curved and of an orange- 

 colour. Nemaspora consists really of sper- 

 mogonous fruits, and Libertella of stylospo- 

 rous fruits of Asconiycetous genera. 



BIBL. Berk. Br. Fl. ii. pt. 2. 355 ; Fries, 

 Sum. Veg. 413 ; Desmaz. Ann. Sc. Nat. 1 

 ser. xix. 269. 



NEMATHE'CIA. Wart-like collections 

 of vertical filaments found on the surface of 

 the fronds of the Cryptonemiaceae (FLO- 

 RIDE^). 



NEOTTIOS'PORA, Desmaz. Agenus of 

 Sphaeronemei(Stylosporous Fungi), remark- I 



able from the fusiform spores being fur- 

 nished with three or four terminal threads. 

 N. caricum grows upon deid leaves of 

 sedges, bursting from beneath the epidermis 

 by a circular black orifice, from which an 

 orange-coloured (sometimes olive-coloured) 

 gelatinous mass of spores escapes in the 

 form of a cirrhus. Diameter of conceptacles 

 about 1-80". 



BIBL. Desmazieres, Ann. Sc. Nat. 2 ser. 

 xix. 346; Berk. & Broome, Ann. N. H. 

 2 ser. xiii. 379. 



NE'PA, Linn. A genus of Hemipterous 

 Insects. 



N. cinerea, the common water-scorpion, 

 is of a dirty brown colour, the body broad 

 and flat, with two long terminal respiratory 

 tubes ; anterior pair of legs stout and greatly 

 elbowed, posterior formed for crawling and 

 not swimming. 



PI. 33. fig. 26 represents the trophi. The 

 labium (i) is three-jointed, with two small 

 lobes between the second and third joints ; 

 the four setae (mandibles and maxillae) are 

 furnished with teeth, directed towards the 

 free end (and not as shown in the figure) ; 

 the lingua or tongue (*) is trifid at the 

 apex. 



The lateral tracheae are dilated opposite 

 the thorax to form two internal respiratory 

 sacs. The eggs are oval, and with seven 

 reflexed filaments at one end. 



BIBL. Westwood, Intr. ; Dufour, Hcmip- 

 teres. 



NEPEN'THES, L. A genus of Nepen- 

 thaceas (Dicotyledonous Plants), in which 

 the spiral vessels have four parallel fibres 

 (see SPIRAL STRUCTURES). 



NEPHROCY'TIUM, Nag. A genus of 

 Paknellaceae ; consisting of 4-16 minute 

 renifbrm green cells, enclosed in an ample 

 envelope. 2 species ; in ditches and boggy 

 pools. (Rab. Fl. Alg. 52; JS T ag. Einzell. 

 Alg. 79.) 



NEPHRO'DIUM, Rich. A genus of 

 Aspidieae (Polypodiaceous Ferns, fig. 224. 

 p. 320). A very large number of species, 

 cosmopolitan. "Brit. sp. : N. Ftiix-mas, 

 Thelypteris, Oreopteris (montnnum), rigi- 

 dum, cristatum, spimdosum (dilatatum), and 

 eemula. 



NEPHRO'LEPIS, Schott A genus of 

 Aspidieae (Polypodiaceous Ferns). 7 spe- 

 cies, tropical. (Hooker, Syn. 300.) 



NEPHRO'MIUM, Nyl. A genus of 

 Lichenaceous Lichens. Three species; rare. 

 (Leighton, B. Lick. Fl. 99.) 

 NEPHROSEL'MIS, Stein. A genus of 



