DAMAECHUS. 169 



145. Atmetochilus atriceps, sp. n. 



Damarchus oatesii, Thorell, Spiders of Burma, p. 2, 1895, in part. 



Eesembling A. fossor, but much smaller, the head higher and 

 wider, its width equal to length of area between fovea and eyes. 

 Sternum as broad as long. First leg without spines on inner side 

 of patella and tibia; the inferior tibial spines long, setiform, not 

 stout as in A. fossor ; protarsus not scopulate to base ; tarsus and 

 protarsus of 2nd leg not scopulate. Apical segment of posterior 

 mamillas a little longer than 2nd segment. 



Measurements in mm. Total length 21, carapace 11*5, 1st leg 

 24, 4th leg 29. 



Loc. Tenasserim (Oates). 



Genus DAMARCHUS, Thorell. 



Damarchus, Thorell, Sv. Vet.-Akad. Handl xxiv, no. 2, p. 14, 1891 ; 

 Simon, Hist. Nat. Araign. i, p. 107, 1892. 



Allied to Atmetochilus, but with the posterior sternal sigilla 

 large and about equally distant from each other and from the 

 lateral margin ; the remaining sigilla marginal ; no central de- 

 pression in the anterior half of the sternum. Male with anterior 

 tibia tipped with a single short spur armed with a long curved 

 spine. Tarsus of palp short and truncate. 



Type, D. worTcmanni, Thorell. 



Distribution. Burma, Malacca, Sumatra. 



146. Damarchus oatesii, Thorell, Spiders of Burma, p. 2, 1895. 



$ . Colour : carapace and legs reddish brown above, paler below ; 

 .abdomen blackish, ornamented above with oblique rows of pale 

 spots. Carapace one-third longer than wide, scarcely longer than 

 protarsus and tarsus of 4th leg, exceeding patella and tibia of 4th 

 or of 1st ; eyes of anterior line straight, medians large, less than 

 half a diameter apart and less than a diameter from the laterals. 

 Tibiae of leys armed with setiform spines ; protarsi with stouter 

 spines. 



c? . Carapace wider and lower than in $ ; legs longer. Tibial 

 apophysis of 1st leg consisting of a process tipped with a long 

 curved spine. Palpal organ with bulb pirif orm ; spine short, 

 slender, filiform, and lightly curved. 



Measurements in mm. $ . Total length 22, carapace 8, 1st 

 leg 18, 4th leg 21. rf . Total length 15, carapace 7'5, 1st leg 20, 

 4th leg 26. 



Loc. Burma : Rangoon, and Double Island in the Moulmein 

 Eiver (Oates). 



