204 NEW GENERA AND SPECIES OF THYSANOPTERA 



Eupathithrips dentipes sp. n. (PI. VII., figs. 1-4). 



Length 5"2 mm.; breadth of mesothorax i mm. 



Colour uniform, dark reddish-brown ; antennae, tibiae, and 

 tarsi hghter, and apical angles of abdominal segments reddish- 

 yellow. 



Head more or less cylindrical, three times as long as 

 tlie greatest breadth of cheeks, narrower behind eyes, but 

 filling out gradually and narrowing again before base. Cheeks 

 widest at about posterior third, and set with a series of 

 small spine-set warts. Eyes large, finely faceted, bulging 

 laterally and extending decidedly further on the upper than 

 on the underside. Ocelli also large, posterior pair on a line 

 M'ith centre of eyes, close to their margins and on the edge of 

 a slight elevation. Antennce approximate at their bases, set 

 beneath the vertex ; basal joint cylindrical ] second slightly 

 narrowed at base; third to sixth roughly claviform, and seventh 

 and eighth fusiform. Joint four is a little shorter than the 

 third ; fifth four-fifths of fourth, and sixth only one-half of the 

 preceding. The sense-cones offer one of the most striking 

 features of this strongly characterized creature; they are 

 simple, slender, and extremely long, each being two-thirds 

 the length of the segment from which it springs. The highly 

 developed state of these organs is further emphasized by the 

 fact that each of the intermediate antennal joints is much 

 swollen for their reception, and then abruptly reduced before 

 apex, the sense-cones being seated on the frontal face of the 

 widest part. So far as I can make out there are three cones 

 on each of joints three and four, and two only on five and six. 

 Each cone is protected on the outer edge by what appears to 

 be an accessory or secondary sense-organ of similar shape, 

 but slenderer and not quite so long ; these secondary organs 

 may quite possibly be specially modified protective spines, 

 though from the single preparation I have been able to 

 make I am inclined to believe the first-named view to be 

 correct, namely, that they are true sensory filaments of a 

 secondary character. No such organs have, however, 

 previously been described in the Thysanoptera. Each of 



