ACARI. 
Arachn. 47 
Sarcoptidoe, on the fecondation of, p. 367 ; Trouessart, C.K Soc. Biol. Feb. 
1904. 
Scutovertex schneideri, Borkum Island, p. 92 ; Oudemans, Ent. Ber. Neder- 
land. No. 13, n. sp. 
Sehaia n. gen. (near Pachygnathus), p. 101, S. rosacea^ Holl., p. 102 ; 
Oudemans, t. c. No. 14, n. sp. 
S. rosacea Oud., note on, p. 122, pi. 7, figg. 28-37 ; Oudemans, Tijdschr. 
Ent. 1904. 
Seiulus levis, Bremen, p. 654; Voigts & Oudemans, Zool. Anz. xii, 1904, 
n. sp. 
S. plumosus Oudem., synony. note, p. 276 ; A. Berlese, Eedia i, fasc. ii. 
S. curtipiliLs, Italy, p. 175, S. soleiger, Italy, p. 176; Ribaya C, Riv. Patol. 
Veg. X, n. spp. 
Serrarius longicornis, Italy, p. 252, S. major, Corfu, p. 252 ; A. Berlese, 
Redia i, fasc. ii, p. 252, n. spp. 
Sperchon glandulosus Koenike, note on, p. 246 ; Rina Monti, Rend. 1st. 
Lombard©, Ser. ii, p. xxxvii. 
Sphoerolcelaps n. gen. {Lcelaptidce) type Lcelaps holotyroides, p. 243 ; A. Ber- 
lese, Redia i, fasc. ii. 
Sphoerolcelaps, p. 447, S. holothyroides, p. 448, pi. 20, figg. 180 & 181, S. cal- 
cariger, p. 449, pi. 19, fig. 176, pi. 20, figg. 177 & 178; A. Berlese, 
t. c. 
Sphceroseius n. gen., type S. ecitonis, p. 433, S. edtoriis, p. 433, pi. 18, 
figg. 159 & 160; A. Berlese, t. c. 
Tarsonemidoe, key to subf., p. 75 ; Banks, A treatise on the Acarina. 
Tarsonemus latus, California, p. 55, pi. 2, fig. 3 ; Banks, J. N. York Ent. 
Soc. xii, n. S. 
Tectocepheus minor, Italy, p. 252 ; A. Berlese, Redia i, fasc. ii, n. sp. 
Temdpalpus californicus, California, p. 55, pi. 2, fig. 2 ; Banks, J. N. York 
Ent. Soc. xii, n. sp. 
T. cuneatus, injuries to lemons in Sicily; Cavara & Mollica, Atti Acc. 
Gioen. (4) xvii, Mem. 2, 25 pp., 1 pi. 
Tetranychidce, key to genera, p. 23 ; Banks, A treatise on the Acarina. 
Tetranychoides n. g., p. 54, T. californica, California, p. 54, pi. 2, fig. 1 ; 
Banks, J. N. York Ent. Soc. xii, n. sp. 
Tetranychus telarius, note on, p. 246; A. Tullgren, Ent. Tidskr. 1903. 
Thromhidimn striaticeps, French, pp. 704 & 705, figg. 1-4, T. poriceps, 
French, p. 704, figg. 5-9; F. Heim & 0. Oudemans, C.R. Ac. Sci. 
t. 138, 1904, n. spp. 
T. striaticeps, p. 91, T. poriceps, p. 93 ; Heim & Oudemans, Bull. Soc. ent, 
France 1904, n. spp. 
T. holosericeum L., poriceps Oudm., tectovertix Oudm. and striaticeps Oudm., 
larva, p. 119; Oudemans, Ent. Ber. Nederland. No. 15. 
Thrombus n. gen., p. 91, T. gymnus, Borkum Isl., p. 91; Oudemans, t. c. 
No. 13, n. sp. 
Trachytes lamda, Italy, p. 272 ; A. Berlese, Redia i, fasc. ii, n. sp. 
Trachyuropoda, note on, p. 248, T. wasynanniana, Luxemburg in nidis 
Lasii mixti] A. Berlese, t. c. n. sp. 
T. cristiceps (Cn.), T. imperforata, Italy, p. 271 ; A. Berlese, t. c. n. var. 
T., charact. and key to subgenus, pp. 350 & 351, subgen. Janetiella 
n. subgen., p. 352, key to species, p. 354, T. cristiceps, p. 354, pi. 9, 
figg. 46, 47 & 48, T. coccinea, p. 356, pi. 10, figg. 49 & 50, pi. 11, fig. 72, 
var. sinuata n. var., p. 357, pi. 10, figg. 51 & 52, T. excarata, p. 358, 
pi. 10, figg. 53, 54, 55, 56 & 57, T. laminosa, p. 360, pi. 11, figg. 60, 
61, 62, 63, 64, T. wasmanniana, p. 362, pi. 10, figg. 58 & 59, T. magna, 
p. 363, pi. 9, figg. 41, 42, 43, 44 & 45, T. hostocki, p. 366, pi.' 11, 
figg. 65 & 66, pi. 12, fig. 73, subgen. Leonardiella n. subgen., p. 367, 
T. canestriniana, p. 368, pi. 11, figg. 67, 68 & 69, var. septentrionalis 
