ig8 NEW GENERA AND SPECIES OF THYSANOPTERA 



Abdomen broad and flat, only twice the length of head and 

 nearly twice as broad as the pterothorax ; almost parallel from 

 the third to the sixth segment, and from thence curving smoothly 

 to base of tube, the ninth segment being very small. Tube 

 less than a third the length of head. Spines on abdomen very 

 small and inconspicuous, longest from the sixth segment, the 

 longest and stoutest springing from the apex of the ninth 

 segment. Terminal hairs of tube short. Distinct traces of 

 wing-retaining spines, though the species is apterous. The 

 dorsal surface of each abdominal segment is strongly reticu- 

 late, the strongest network showing at the base of each. 



Type — British Museum (ex coll. Pascoe). 



Hab. — Two unlabelled specimens.* 



Leurothrips linearis sp. n. 



Length 2*4 mm. ; breadth of mesothorax 0*45 mm. ; greatest 

 breadth of abdomen o"52 mm. 



General structure as in the preceding species. 



Colour coal black; tarsi brownish-black; antennal joints 

 (except the basal joint) yellow. 



Head short, only twice the length of prothorax, and not 

 twice as long as its breadth at base. Eyes rather small. 

 Antennce as in Z. alboinaculata, not quite one and one-half 

 times the length of head ; third joint only one quarter longer 

 than the two basal joints together, and also one and one 

 quarter times as long as the fourth joint ; fifth two-thirds of 

 fourth and about one-sixth shorter than the sixth, and equal 

 to the penultimate and apical joints together; apical joint 

 very small. 



Prothorax Avider than head ; mid-lateral, posterior- and 

 anterior-marginal spines and spines at angles strong, those 

 at posterior angles being especially long. Pterothorax nearly 

 square, being very slightly broader than long ; mesosternum 

 more than twice the width of head at base, sides parallel ; 

 metasternum not so broad, and with sides evenly rounded. 



* There arc five specimens referable to this species in the Dublin 

 Museum, labelled "Algeria, J\ifpon." 



