214 NEW GENERA AND SPECIES OF THYSANOPTERA 



C(?/(?wr coal-black ; fore-tibiae and tarsi dark brown; third 

 joint of antennae yellow, tipped with brown ; basal halves of 

 joints four and five yellow. 



Head as in /. assiinilis ; post-ocular spines short ; antennae 

 not quite one and one-half times the length of head ; joints 

 three to five mildly claviform ; six to eight fusiform. Third 

 joint three and a half times the length of second ; fourth two- 

 thirds of third; fifth but slightly shorter than fourth; sixth 

 very slightly shorter than fifth, and a little shorter than the 

 two apical joints together. Spines at posterior angles of pro- 

 thorax not long ; those on all femora short and slender, with 

 the exception of a few very long bristles on outer edges. 

 Wings coriaceous, strong, only reaching to seventh abdominal 

 segment. Pterothorax two and one-half times the width of 

 head, and almost square. 



Abdomen only slightly broader than pterothorax, tapering 

 very gradually to tube from the third segment. Tube gradually 

 narrowing from base to apex. Abdominal hairs and spines 

 decidedly weaker than in /. assiinilis. >. 



Type — One female in British Museum. - 



Hab. — Chontales, Nicaragua. ' 



Idolothrips foveicollis sp. n. (PI. VII. ; fig. 12). 



?. Length 7-8 mm. ; breadth of mesothorax 0*9 mm. 



Colour black ; tibiae and tarsi brownish ; stems of antennal 

 joints three to five yellowish-brown. 



Head cylindrical, two and one-half times as long as wide, 

 narrowed behind eyes, and widened slightly before constriction 

 at base ; vertex produced shortly beyond eyes. Cheeks set with 

 a few long spines and several shorter ones. Eyes rather large 

 and finely faceted, bulging very slightly. Post-ocular spines 

 exceptionally long, and placed much further behind eyes than 

 is usual. Ocelli large, posterior pair near to inner margins of 

 eyes and above the mid-line ; anterior ocellus near vertex, and 

 protected by a pair of strong spines. Antennce inserted at 

 extreme apex of head and separated at base ; long and slender, 

 one and three-quarter times the length of head. Joints three to 



