Cteniform Spiders of Ceylon, Burmah, &e. 335 
“ Vulva ex area subtrapezoidi pallide fusca constanti, que 
costas duas longitudinales parallelas nigras ostendit.” 
If this diagnosis fully describes the vulva, its form is quite 
simple, and certainly agrees with none of the species before 
me from Borneo, 
1891. Ctenustrabifer, Thor., Karsch, Berl. ent. Zeitschr. xxxvi. 
2, p. 295, Taf. xi. figs. 18 & 184. Tabrobane, Ceylon. 
(PRLV: fig. 145 
Without actually seeing the types, one cannot pronounce 
on the identity of this species with certainty. That it is not 
identical with trabifer, Thor., as Dr. Thorell himself pointed 
out, admits of no doubt, since Thorell’s own identifications of 
the latter are before me. At the same time, I have before me 
examples of two distinct species from Ceylon in the neigh- 
bourhood of Tabrobane (g and ?). One of these presents 
a form of vulva similar in general outline to that of Karsch’s 
figure ; but either the drawing is not executed with sufficient 
minuteness of detail, or it depicts the vulva of a different 
species. In either case it would require a new name, and I 
am rather inclined to expect that it will prove identical with 
C. ceylonensis, sp. n., described below. 
Karsch’s figure and the vulva of ceylonensis belong to 
quite a different type from that to which trabifer, Thorellit, 
Flowert, valvularis, pulvinatus, &c. belong. The vulva 
reminds one rather of that of some species of Huropean Lycosa. 
1891-92. Ctenus pulvinatus, Thor. 9 ad., 17 mm. Ann. 
Mus. Genov. ser. 2 a, vol. x1. (xxxi.) p. 1389. Sarawak, 
Borneo (Doria & Beccart). 
2. Tib. i. and ii. 5 pair. Protarsi 1. and i. 3 pair spines 
beneath. Tub. i. and iv. 1—1—1 above. 
Measurements.—Tot. len. 17 mm., carap. 93, ant. marg. 
4°25; legs 1. 23, 11. 21°5, iii. 19, iv. 27°5; pat.+tib. iv. 8°75. 
Vulva. “ Non multum a vulva C. valvularis differt. K lamina 
magna subtransversa, fortiter elevata, pene plana, nitida, 
secundum medium late et leviter impressa, etc.” 
I have little doubt that the forms described below as 
C. sarawakensis and Hoset are quite distinct from either 
valvularis (cf. Pl. IV. fig. 16) or pulvinatus, Thor.; though 
the indistinctly annulated femora and tibie of 11. and iv. are 
common to the four species, Hoset, sarawakensis, pulvinatus 
(sec. Thor.), and valvularis (sec. Thor.), and indeed to all the 
eastern forms which have come before me to a greater or less 
extent, except denticulatus. 
