390 EBV. 0. p. CAMBEIDGE ON CEYLON SPIDERS. 



consisting chiefly of a largish, oval, corneous lobe ; they have a 

 curved corneous projection at their base on the outer side, and 

 one or two others which project from their extremity. 



As no figures of this species have ever yet been published, I 

 have added a rough sketch or two (PL XIII. figs. 61 to 68), which 

 will perhaps give some idea of its structure and markings. 



This species is closely allied to Tetragnatha quinquelineata 

 (Keyserling) " Beschreib. neuer, u. wenig bekannter Arten aus 

 der Pamilie Orbitelse (Latr.) oder Epeiridse (Sund.)," Sitzungsbe- 

 richte der Isis zu Dresden, 1863, p. 145, pi. 7. figs. 3, 4, 5, 6. 

 The pattern on the abdomen of T. decorata corresponds with 

 that given in fig. 8 of T. 5-striata ; but the form of the abdo- 

 men and the structure of the palpi differ decidedly. Tig. 8, in 

 the same plate, resembles almost exactly the peculiar form of the 

 digital joint of the palpus of T. decorata cS; but the spider to 

 which it belongs (T. ocellata, Keys., fig. 7) has a totally different 

 pattern on the abdomen (which is also of a diff'erent form), and is 

 undoubtedly of a different species : both the species referred to 

 here in Keyserling's work were received from Santa Ee de Bogota 

 (New Granada) ; and it is a remarkable fact that species of the 

 same genus from these two widely separated countries. New 

 Q-ranada and Ceylon, should present such curious specific cross- 

 resemblances, as they may perhaps be not incorrectly termed. 



The present species, T. decorata, having the specific abdominal 

 design of T. 5-Uneata with the palpal structure of T. ocellata, it 

 would be interesting to find out whether or not Bogota produces 

 another species in which the peculiar form of the abdomen in the 

 female of T. decorata is represented. 



Tetragnatha culta, n. sp. PI. XIII. figs. 69 to 75. 



(S adult, length 1^ line; $ adult, 2 J lines. 



cS adult. Cephalothorax short, oval, rounded behind, and laterally com- 

 pressed before ; moderately convex above, with a large and deep de- 

 pression at the thoracic junction ; the other normal furrows and in- 

 dentations are moderately defined ; elypeus low (no higher than the 

 space occupied by the fore and hind central pairs of eyes), and 

 slightly impressed about midway ; colour yellow, faintly tinged with a 

 deeper hue on the caput. 



Eyes eight, small, not very unequal in size, and placed on black spots ; 

 they are in four pairs ; those of the two central pairs form a square of 

 which the fore side is very slightly the shortest ; the eyes of each 

 lateral pair are contiguous, about as far from the hind central eye on 



