272 EEV. 0. p. CAMBllIDGE ON NEW SPIDERS. 



Zahitm very broad, short, rounded at corners of apex, which is 

 rather less broad than base, and very slightly hollowed. 



Falces long ; inserted far back beneath caput, greatly inclined to 

 labium. 



Leffs of first two pairs long ; of two hinder pairs short ; relative 

 length 2, 1, 4, 3 ; but little difference between 2 and 1, and 

 4 and 3, 



JEi/es eight, not very unequal in size ; four in a square at extre- 

 mity of caput, surrounding a small conical prominence; two 

 others on either side of caput are nearly contiguous and 

 slightly obliquely seated on a tubercle. 



Thlaosoma dubium, n. sp. PI. IX. figs. 25-35. 



2 - Length Sg lines. 



Cephalothorax broad, elevated behind and sloping forwards to the eyes, 

 hind slope moderate, narrower in front than behind; caput issues 

 forwards abruptly, to some length, leaving a kind of obtuse shoulder 

 on either side at its junction with thorax ; surface of cephalothorax 

 uneven ; two small somewhat circular humps in a transverse line on 

 hinder i)art of caput, with a longitudinal indentation between them ; 

 a little behind each of these is a deep, curved, longitudinal indentation. 

 Thorax irregularly and thinly covered with tubercular and somewhat 

 spiny granules ; these are most conspicuous in the lines of the above- 

 mentioned humps and indentations. Caput ends in a conical pro- 

 minence at its fore extremity, between the four central eyes. Colour 

 deep chocolate-brown, margins yellowish. 



Eyes 8, small, not very unequal in size ; four form a square at extremity 

 of caput ; the two forming the fore side of square rather largest ; 

 lateral pairs considerably removed from the central four, and the eyes 

 composing each very small, seated slightly obliquely on a tubercle, 

 and occupying about the same general line as the four central 

 eyes. 



Legs. Relative length 2, 1,4,3; those of first two pairs much the longest, 

 but of nearly equal length ; those of the third and fourth pairs much 

 shorter, but also nearly equal to each other in length ; all extend 

 laterally ; femora of first two pairs very large and strong and armed 

 on undersides with a double longitudinal row of short stoutish 

 tubercular spines, some smaller spines also occupy the extreme 

 third portion of the surface on the outer sides of the same joints. 

 Colour of this portion, also of the general joints, and a considerable 

 portion at the extremities of the tibiae, of a deeper brown than the 

 cephalothorax ; the remainder yellow ; the yellow portions of femora 

 have an oblique patch of brown on their outer or fore sides ; and the 

 brown portions at hinder extremity, ,or base, of tibiae have an oblique 



