1006 EET. 0. P. OAMBIIIDQE ON NEW [DcC. 15, 



5. On some new and little-known Spiders {Araneidea), 



By the Rev. O. Pickard Gambridge, M.A., F.R.S., &c. 



[Receiyed October 16, 1896.] 



(Plate LTI.) 



The four Spiders described below are from widely separated 

 locatities — Ceylon, Borneo, and South America. For two of them 

 (of the families Myrmecidce and Oasteraeanthiclce) it seems to me 

 that two new genera are needed. Of the other two the females 

 have already been described, but the males, now described and 

 figured, are new. Tlie Spider on which one of the new genera is 

 based — Pri%da (Qasteracanthidce) — is of exceptional interest; it 

 was received by me many years ago from the collection of the late 

 Mr. "Wilson Saunders, with an almost illegible, and to me wholly 

 unintelligible, little ticket attached to it, so that I neither knew 

 the name of the captor nor the locality. Not long since I had an 

 accidental clue to it which on being followed up resulted in these 

 particulars being cleared up, and there is no doubt that this 

 Spider was found at Sarawak by Dr. A. E. "Wallace. It is with 

 much pleasure that I have now conferred upon this singular 

 form the name (so well known and valued by every biologist) of 

 its captor. 



Order AEANEIDEA. 



Gen. nov. AETrcrs (fam. Myrmecidce). 



Cephaloihorax much longer than broad; lateral marginal 

 impressions at the caput slight ; fore margin broadly but slightly 

 roundly truncated. Posterior extremity rather drawn out into 

 a somewliat tapering but truncated covering to the fore part of 

 the connecting pedicle, which last is long, cylindrical, and corneous. 

 Upper convexity moderate, proiile slightly and uniformly curved ; 

 normal grooves and indentations very slight. 



Eyes widely separated, in two transverse curved rows; the 

 anterior row much the shortest and very slightly curved, the 

 convexity of the curves of both rows directed forwards; the 

 posterior row is double the length of the anterior and strongly 

 curved. The four central eyes form a quadrangle broader than 

 long, and its fore side shortest. The four laterals form a very 

 large quadrangle whose relative proportions are similar to those 

 of the central one, and the line formed by the laterals on each 

 side is rather longer than that of the anterior row. The fore- 

 central eyes are largest, the hind-laterals (apparently) the 

 smallest. 



Legs not very long ; rather slender, not very unequal in size, 

 4, 2, 1, 3. Spines few and slender. Tarsal claws 2, with a small 

 claw-tuft on a supernumerary or claw-joint. 



Falpi short, slender ; digital joints as long as, or a little longer 



