296 ENTOMOLOGICAL NEWS. [Nov., '04 



occupying about one-half the width of the head. Ocelli wanting. Mouth 

 cone long, extending to mesothorax, tipped with black ; maxillary palpi 

 three segmented. Antennas eight segmented, bases separated by one- 

 half width of basal segment. Length of segments : 34, 59, 89, 68, 76, 119, 

 25, 42. Two basal segments broadest. First segment brown, second and 

 third yellow, base and sides shaded with brown, other segments brown, 

 the fourth being a shade lighter. Spines conspicuous, having become 

 specialized as sense organs on segments three to eight. 



Prothorax about four-fifths length of head, and twice as broad as long, 

 widest in the middle, tapering abruptly to the head, less abruptly poste- 

 riorly. Each anterior angle bears a pair of short, divergently curved 

 spines, one curved spine at each posterior angle. Color dark brown. 

 Meso- and metathorax as long as head, diverging posteriorly, only a 

 little wider than prothorax ; color dark brown ; surface marked with 

 transverse reticulating wrinkles appearing like striae in dorsal view. 

 Wings wanting. Legs about same thickness ; hind pair somewhat longer 

 than the other two. Femora brown, tibiae brown, shading into yellow, 

 tarsi yellow, brown at extreme tip. 



Spines prominent and numerous on tibise, one especially well defined, 

 at the posterior angle of the tibia of the third pair of legs. 



Abdomen about one-half as broad as long ; black, with silky lustre, a 

 transverse row of twelve dark brown spines, regularly spaced, across 

 segments two to seven. One long spine on the lateral margin of 

 each segment ; narrow, dark brown, transverse reticulate wrinkles ap- 

 pearing as striae on first seven segments. Spines on last two segments 

 comparatively short but strong. 



Very common at Berkeley on grass in winter and spring. 

 Female with ovipositor upcurved (yEolothripidae) . ... Caliothrips. 



CALIOTHRIPS nov. gen. 



Entire surface of insect faintly reticulate and coarsely punc- 

 tate with the exception of the tibiae and tarsi. Head slightly 

 wider than long. Ocelli present. Antennae g-segmented, the 

 last three being much shorter and closely joined, the third and 

 fourth segments are equal in length and longer than an)^ of the 

 others. Prothorax a little shorter than the head, without 

 large bristles. 



L,egs long and slender, bearing a stout spine at the base of 

 the posterior tibia, femora unarmed. Wings present, pointed 

 at tip ; anterior wings with strong veins consisting of a ring 

 vein and one longitudinal vein, the longitudinal bearing stout 

 spines almost to the tip. Both wings are thickly set with 



