OCR Text |
Show 214 ON NEW TRAP-DOOR SPIDERS. [Mar. 5, uphill from Ningpo (P. W. Bassett-Smith, Esq., Surgeon tf(type), ?). Distinguishable from the Javan M. fuliginea Simon (Ann. Soc. Ent. France, 1891, p. 306), which it resembles in colour, in having 3 rows of spines instead of 2 rows on the underside of the protarsi of 1st and 2nd legs, as well as in the greater length of the tarsus of the palp. The British Museum has specimens of M. fuliginea from Ijigombong in Java (E. W. Andrews) and from Singapore (H. N. Ridley). MACROTHELE HOLSTI, sp. n. (Plate XXI. fig. 5.) 8 • Coloured like the Burmese and Javan M. maculata Thorell (Ann. Mus. Genova, xxviii. p. 409. 1890) and the Penang M. seg-mentata Simon (Ann. Soc. Ent. Fr. lxi. p. 284); that is to say, with the abdomen ornamented above with about 5 pairs of oblique transverse pale bands and some pale spots on a darker ground. Eyes practically as in M. fuliginea and M. palpator. Carapace as long as patella and tibia of 1st leg, the fovea having the form rather of a median transverse pit than of a transverse sulcus. Legs : femur of 1st spined internally, patella with about 4 spines ; tibia armed internally and below with about 28 strong spines arranged in irregular series, protarsus with 10 spines in two rows, tarsus with 5 small spines in two rows ; tibia of 2nd leg with 2 internal and 5 inferior, of which 3 are apical, protarsus with 4-2 spines ; tibia of 3rd and 4th with 2 apical spines below. Palp shorter than in M. palpator, the tibia about three times as long as the tarsus, armed above with two bands of spines and 1 long inferior external spine; palpal organ about as long as the tibia and half the width of the carapace, the spine with its basal third thick, its apical two-thirds filiform, lightly sinuous. In two sub-adult females the tarsus of the palp is only as long as the tibia, and the tibiae and protarsi of the anterior legs are spined as in M. fuliginea. Measurements in millimetres.- 3 • Total length 14 ; carapace 7 ; 1st leg 19, 4th leg 22. Hab. Laki-ku-li, Central Formosa (P. A. Hoist). The males of the two species of Macrothele here described may be compared as follows :- a. Palpal organ at least as long as tibia and patella of palp and as width of carapace ; tibia of palp about four times as long as the tarsus, armed above with a single band of close-set spines; tibia of 1st leg armed with about 7 spines below and internally, patella and tibia scarcely spined ; tibia of 2nd leg with 5 long and strong close-set spines, protarsus slightly curved at base ; tibia of 3rd and 4th armed with many strong spines below ... M.palpator. b. Palpal organ only as long as tibia of palp and as half the width of the carapace ; tibia of palp with two bands of spines above, only about three times as long as the tarsus ; tibia of 1st leg armed with about 28 spines, patella and femur spined internally ; tibia of 2nd armed with scattered spines below; protarsus unmodified ; tibia of 3rd and 4th with a pair of apical spines below M. holsti. |