68 Mr. S. Hirst on 7icw Tlarvest-men 



inner side also ; tlie apical spine on tlie outer side is either 

 quite obsolete or absent. 



Legs long. Their femora are furnished with very minute 

 granules ; femur of tirst leg without any processes. Patellse 

 of posterior legs with two or three minute granules at the 

 distal end above. Apparently there is no scopula on the 

 tarsi of the posterior legs and their claws are without teeth. 

 Tarsal segments 1 , ?, 7, 7. 



Colour. — Body and appendages brown; the eminence in 

 the centre of the abdominal part of the scutum is white ; 

 segments of scutum also seemingly faintly outlined in white. 

 Patellaj and tlie distal ends of the femora and of the tibiae of 

 the legs blackish. 



Measurements in mm. — Length of trunk 2*5, of first leg 

 16-2.5, of second (*?), of third 21, of fourth 31. 



Matei-ial. — Four specimens collected by Rose Lloyd in the 

 Higher Potaro River District, British Guiana. 



Ihalonius quadriguttatus, sp. n. (PI. I. figs. 3, 3 a.) 



Scutum convex, and it is a little shorter than the tibia of 

 the third leg. There are three pairs of thorns on its surface. 

 Those of the first pair are long and they are situated at about 

 a third of the length of the scutum from its anterior margin. 

 They are followed at a short distance by the thorns of the 

 second pair, which are quite short. The thorns of the third 

 pair are long ; they are placed at some distance in front of 

 the posterior margin and are separated from it by a trans- 

 verse groove. Some distance in front of this last pair of thorns 

 there is a pair of little granules and then a transverse series 

 of about four granules. A similar series is also present on 

 the last area of the scutum. [I think that the first pair of 

 thorns is placed on a part of the surface of the scutum 

 corresponding to the hinder half of the cephalothoracic part, 

 and that the second pair belongs to the first abdominal area ; 

 the last pair of thorns belongs, without doubt, to the fourth 

 abdominal area of the scutum. Owing to the absence of all 

 of the transverse grooves, except the last one, it is difficult 

 to be certain about this, however.] The distance which 

 separates the eyes from one another is about twice that which 

 separates them from the lateral margin. Each eye is placed 

 on a very slight elevation and a little arch-like structure, 

 carrying a little pointed granule on its dorsal surface, joins 

 each of these two elevations to the anterior margin of tlie 

 scutum. 



