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Show 25. JDyareyops andrewsi (a) and Blakistoma aurea (b -e )................. 132 2G. Selenotholus foelschei 27. Dekana di.v ersi.c olor . ................................................................................................................................... 1 °»Q 28. Dog, showing the opposing hair-streams of the chest................. 148 29. Dog, showing the whorl (A) on the gluteal region and hair-streams on the extensor aspect of the thigh ........................ 1^0 30. Domestic Ox (young): opposing hair-streams and whorls, seen from above ............................................................................ 31. Domestic Horse, showing the hair-streams, feathering, and whorls ................................................................................... 32. Lower surface of hand of Hapalemur yriseus, J ........................ 1^9 33. Palmar surface of hand and forearm of Hapalemur gnseus, 2 • • 160 34. Palmar surface of hand and forearm of Hapalemur griseus, 2 • • 101 35. Transverse section through arm-gland of Hapalemur yriseus. . .. 162 36. Ccelomic pouches of Pheretima posthuma................................... 165 37. Imperfectly developed ccelomic pouches of Pheretima posthuma . 166 38. Transverse section through body-wall and underlying coelomic pouches of Pheretima posthuma.............................................. 167 39. Longitudinal section through body-wall and underlying coelomic pouch of Pheretima posthuma .............................................. 168 40. Nervous system of the A ran etc and of the Pedipalpi of the family Theliphonidce ........................................................................ 170 41. Mouth-parts of the Thelyphonidce (Mastigoproctus giganteus) . . 173 42. Mouth-parts of the Pedipalpi of the families Thelyphonidce, Phrynidre, and of the Pseudoscorpiones (Chernetes) ............. 177 43. Mouth-parts of the Scorpiones and of the Aranese of the family Lycosidce ............................................................................... ..180 44. Alimentary system of the prosoma of the Thelyphonidce............. .183 45. Alimentary system of the prosoma of one of the Phrynidce___ 186 46. Ventral view of anterior segments of Polytoreutus kenyaensis . . 192 47. Ventral view of anterior segments of an individual of Polytoreutus kenyaensis, with shorter perigenital area..................... 192 48. Ventral view of anterior segments of Polytoreutus montis-kenyce. 192 49. Ventral view of genital segments of Polytoreutus montis-kenyce. 195 50. Longitudinal section through genital segments of Polytoreutus montis-kenyce ......................................................... ^gg 51. Longitudinal section through genital segments of Polytoreutus kenyaensis............................................... ^9g 52. Longitudinal section through the spermathecal sac and the adjacent region of Polytoreutus kenyaensis........................ .. i>01 53. Spermatophoral case of Polytoreutus kenyaensis..................... 202 54. Section through apex of spermatophoral case of Polytoreutus kenyaensis................................. 55. Persian Ibex.................................... ..................... 56. Praecaudal and anterior caudal vertebrae, with epipleurals, of Balistes aculeatus............................. 2gg 57. Right half (inner side) of pectoral arches of (A) Diodon punctu-latus and (B) Batistes verrucosus.......................... 291 XX Page |