HAPLOPHRACtIUM. [ 383 ] 



HELICOSPORIUM. 



Fig. 312. 



Btbl. Hooker, Erit. Junrjermannirp, pi. 

 54 ; Ekart, <S'////. Jim(/. pi. tijz;. 05 ; Eudliclier, 

 Gen. Plant. No. 474-3 ; Gottsclie, Nova 

 Acta, XX. 2G"), pis. 13-20. 



HAPLOPHRAG'MIUM, Reuss. — A 

 sandy Lituoliue Foraminifer, either nauti- 

 loid or crozier-shaped, with simple or coin- 

 pound aperture and undivided chambers. 

 Recent and fossil. 



BiBL. Reuss, Sitzum/ffb. Ak. Wien, xliv. 

 381 ; Brady, Mic. Jn. li. s. xix. 29. 



HAPLdSTI'CHE, Reuss. See Lixu- 



OLA. 



PIAPLOT'RICHUM, 

 Link. — A genus of 3Iu- 

 cediues (Hyphomycetous 

 Fungi), intermediate in 

 structure between Bo- 

 tn/tis and Asperf/illus. 

 The spores are developed 

 from a capitate cell 

 terminating the septate 

 erect fertile filaments 

 (tig. 312). 



BiBL. Corda, Ic. Funn. • , , . ^ 

 Nees Sust Pilze nl 4 . 3^?'°*"''^"™ '•o^''««>- 

 Fries, dm. Ve,/et. m. Magn. 200 chams. 



HLIRPAC'TICUS. See Arpacticus. 



HARPIRHYN'CHUS, Meg.— A genus 

 of Trombidina (Acarina). 



H. nidulans, in the dilated feather-follicles 

 of the lark and green-finch, (Megnin, Paras. 

 243, fig.). 



HAR'TEA, Wright.— A genus of Alcy- 

 onidiidse. 



Polype solitary ; body cylindrical, fixed 

 at the base ; tentacles 8, knobbed at their 

 base ; basal portion of body thickly studded 

 with small star-shaped spicula; base and 

 body of tentacles with long dendritic spi- 

 cula ; mouth centi'al, with 2 lips ; somatic 

 chambers 8. 



H. elegans. Height 3-4". White, br>se 

 dark. West coast of Ireland. 



BiBL. E. S. Wright, Qu. Mic. Jn. 1865, 

 T. 213 (pi.). 



HARVEST-BUG. Trombidixjm au- 

 tmnnale. 



HASSALLIA, Berk. See Sirosiphox. 



HASTERIGERI'NA, Thomson. — De- 

 scribed by Brady as scarcely separable from 

 Globiyerina (W. Thomson, Proc. P. S. xxiv. 

 534 ; H. Brady, Mic. Jn. 3, xix. 79). 



HAUERI'NA, D'Orb. — One of the 

 Miliolidce, growing on one plane, subdis- 

 coidal, and characterized by a cribriform 

 aperture. 



M. cotnjjressa (PI. 23. fig. 8). Fossil in the 



Tertiary beds ; living in tropical sens ; rare 

 on the Jh'itish coast. 



BiBL. Carpenter. Tntrod. For. 81. 



IIAUSTO'RIA.— A term applied to cer- 

 tain short processes springing from the basal 

 fibres of the hyphtie of moidds, while travers- 

 ing the intercellular passages of the host- 

 plants ; they are often expanded at the ends. 

 They penetrate the parenchymatous cell-^, and 

 absorb their contents. They may be readily 

 studied in Ci/stopus. 



BiBL. Brefekl, Schiinmclpilze ; De Bary, 

 Beitriif/c ; Sachs, Bot. 279 (figs.). 



HAVERSIAN CANALS. See Bone. 



HEART.— The muscular fibres of the 

 heart present certain pecuharities. The 

 primitive bundles are more slender than 

 usual ; they frequently anastomose, and 

 contain normally a few minute granules of 

 fat : the transverse striae are also often in- 

 distinct. In disease the fatty matter is often 

 extremely abundant (PI. 38. fig. 14 a), and 

 the strife are more or less obliterated. 



BiBL. KoUiker, Mik. An. ii. ; Forster, 

 Path. An. ; Wedl, Path. Hist. ; Quain, 

 Med. CMr. Tr. 33 ; Rokitansky, Path. An. 



HEDR^OPHY'SA, Kt. = sessile Bicos- 

 oeca. One sp., Jersey. (Kent, Infus. 274). 



HEDWIGTA, Hook.— A geniis of Mos- 

 ses. See Zygodon. 



HEIBER'GIA, Grev.— A genus of Dia- 

 tomaceae. 



Char. Fr. compressed, quadrilateral, cel- 

 lulate, with a punctate surface of the angles, 

 where they probably cohere : valves with 

 one longitudinal and several transverse 

 costae, the longitudinal one terminating at 

 each end in a blank space. 



A. Barbadensis (PI. 52. fig. 4). Barba- 

 does deposit. 



BiBL. Grev. Mic. Trans. 1865, v. 100. 



HELICO'MA, Corda.— A genus of De- 

 matlei (Hyphomycetous Fungi), with the 

 spores curled into a spiral. Berkeley 

 considers the distinction between Helieoma 

 and Helicosporium scarcely tenable, and 

 Fries includes Helieoma Midleri, Corda, 

 under Helicosporium. This plant has been 

 found on dead wood in this comitry. 



BiBii. Corda, Ic. Fung. i. pi. 4. fig. 219; 

 Berkeley and Broome, Ann. N. H. 1851, 

 vii. 98 ; Fries, Sum. Veget. 500. 



liELICOSPO'RIUM, Nees.— A genus of 

 Dematiei (Hyphomycetous Fungi), growing 

 on decayed wood, nearly related to Heli- 

 eoma and Helicotrichum, Helieoma and 

 Helicosporium are described as having erect 

 fertile filaments, Helicotrichum creeping 



