CONTENTS. xm 



PAGE 



Gautieu, Ol. — Observations on Caterpillars of Cahhage-white Caterpillars .. .. :>02 



Keys. James H. — Maritime Coleoptera 303 



Carpenter, George H., & F. J. S. Toi.hKUViSpirades of Bijpoderma JShujcfot .. S03 



Plough, Harold H. — Temperature and Crossing-over in Drosophila :;03 



McEwEN, R. S. — Reactions of Drosophila to Light and Gravity 303 



Sanford, Eldon W. — Digestion in Coclro'irli. 304 



'NvTTAhh, G. R. v.— Pathological Effects of Phthirus pubis 304 



Carpenter, George H. — Collembola of Ahor Expedition 304 



TiLLYARD, R. 3.— Caudal Gills of Larvx of Zi/gopterid Dragonflies (2 figs.) . . . . 304 



Rabaud, E. — Reflex Immobilization in Arthrojiods 372 



„ — Rule of Ganglia in Immobiiization 373 



WhkkIjER, W.M.— Study of Ant Larva: {2 Hgs.) 373 



PiCTET, Arnold — Dimorphic Colourimi in Lepidopiera 374 



Reeves, Edna M. — Inheritance of Extra BriMes in Drosophila 375 



Shelford, Victor E. — Coloration of Tiger-beetles 375 



Cameron, A. E. — Leaf-eating Crane-fly 376 



Bacot, A. — Viability of Mosquito-eggs 376 



Cameron, A. E.,& R. C. Tkeherne— T/te Pear r/m>s 376 



Cdllen, Anna M. — Rectal Tracheatiou of Dragon-fly Larva 376 



Jamieson, Janet P. — Rectal Trachex of Dragon-fly Larra 377 



Carroll, Mitchel — Hind-gut and Rectal Tracheae in Dragon-fly\Larta 377 



BoDiNE, Joseph H. — Experiments on Respiration in Larval Dragon-flies .. .. 377 



Machida, J. — Spermatogenesis of an Orthopteron 377 



Steven, H. M. — Biology of Chermes 378 



Brindley, H. H. — Notes on Earwigs 378 



Nuttall, G. H. F. — Biology of Phthirus pubis 378 



;S. Myriopoda. 



Carl, J. — New Spirostreptidx 195 



Brolemann, Henry W. — Peculiar Variation in Brachydesmus .. ..' 305 



5. Arachnida. 



Berland, Jeanne — Alteration of Instinct in Spider 57 



Jordan, H. E. — Cardiac and Skeletal Muscle of Scorpnon 57 



Williamson, W. — Rare Hydracarid 57 



Hirst, Stanley — New Parasitic Acari 57 



Jordan, H. E. — Leg-muscle of Sea-spider 57 



Wilson, Edmond B. — Chondriosomes of Scorpion, Spermatozoa 195 



Stendall, J. A. Sidney — Ulster Spiders 195 



Badoock, H. D. — Ant-like Spiders 195 



Walter, C. — Swiss Halacaridm 195 



Soar, Charles D. — Fly dracarina of Epping Forest 306 



Williamson, AV., & Charles D. Soar— Le?)ert/a *e/re< Walter 306 



DE Beauchamp, P. — New Pentastomid from a Eish 306 



Faust, Ernest Cauroll — Notes on Mussd-mite 379 



Tkouessart, E. L. — Mange Mites 379 



Reichenow, Ed. — Intracellular Digestion in an Acarid 379 



Teodora, G. — Mites as Disease-carriers 379 



Berlese, A. — New Earrest Mite 380 



