ANT-LIKE SPIDERS FROM MALAYA. 



303 



Short Description. 



* 



Prosoma very slight, longer than opisthosoma. Cephalic groove 

 broad and shallow, caput not very much higher than thorax. A 

 strong white wedge not due to hairs at sides of groove. 



Falces nearly horizontal by lower edge. Upper teeth 6, with 

 4 middles much largest. Lower teeth 6, strong, close. Ta of 

 palp = or very slightly > ti. 



Legs 4.1.3.2, with all differences marked. 1st has white c 

 and tr, and 4th white tr larger than c. The anterior legs are 

 light with strong dark side-lines f to ti. p x has 1 spine pair, ti l 

 7 pairs or 6 . 7, m l 2 pairs. Ti 2 has 3 spine pairs, m 2 2. 



Pedicel shortish, with j. very slightly > j.,. 



Opisthosoma has thin wdiite belt at ^ and is widest at | back. 



Notes. — Description based on 4 $ found at Bukit Besar 

 3500 ft., Talum 4000 ft., and Gedong. One of the specimens only 

 (from Bukit Besar) is accompanied by its mimicked ant of species 

 no. 2. The type-specimen is rather lighter than any of the 

 others. Differences from specimen to specimen are very slight. 

 In one tr has a distinct dark exterior marking not visible in the 

 others. The sternum point is rather unusually far from the base 

 of the labium. The cephalic wedge is always very noticeable and 

 serves as a recognition mark. 



This species is in many ways very like Myrmarachne maxillosa, 

 but it may be distinguished without difficulty by general shape of 

 prosoma and opisthosoma, which are less squat, teeth of lower 

 margin, white cephalic wedge, larger pedicel, and shape of 

 sternum, which is pointed instead of undulated between coxaa and 

 constriction of opisthosoma. 



Total lengths 7*8, 7-6, 7*3, 6-2 mm. 



Legs of specimen 6*2 mm. long : — 



1 c + tr 1-0, f 1-9, p + ti2-3, m+ta 1-1 =6'3 



2 c+tr + fl-8, „ 1-9, „ 1-0 =4-7 



3 „ 2-1, „ 1-9, „ 1-8 =5-8 



4 c + tr 1-1, f 2-1, „ 2-5, „ 2'1 =7-8 



Ants accompanying, no, 2. 



$ . Myrmarachne ramosa, sp. n. (Text-fig. 8.) 



Prosoma. — (a) Length == p 3 + ti. 5 + m. 3 -f-ta 3 nearly, slightly > 

 opisthosoma. Caput = thorax. Front wall recurved, hot stepped 

 back to eye 2. Sides straight or very slightly convex, parallel. 

 Back wall straight with well rounded corners. Thorax joined 

 across groove by distinct paralled -sided bridge which appears 

 from above as a sharp constriction, though groove at base is 

 nearly as wide as caput. Thorax swells out at sides to about 3, 

 and then narrows with slightly convex and concave slopes to end 

 which is cut square. 



(6) Front wall of caput nearly vertical but with very slight for- 

 ward batter, top straight sloping very slightly up to eye 4, over 



