June, I9I5-] HoOD AND WiLLIAMS : NeW ThYSANOPTERA. 123 



brown along oviter surface. Ninth abdominal segment not provided with two 

 pairs of chitinous dorsal projections. 



Otherwise similar to .female. 



Measurements of a male paratype : Length 0.948 mm. ; head, length 

 0.130 mm., width o.iiS mm.; prothorax, length 0.132 mm., width 0.162 mm.; 

 mesothorax, width 0.168 mm.; metathorax, width 0.163 mm.; abdomen, width 

 0.180 mm. 



Described from 3 macropterous females and 9 apterous males, 

 collected from grass at Orlando, Florida, November 5 and 8, 1914, 

 by C. B. Williams. 



This species is closely allied to Brcgmatothrips vennstus Hood, 

 differing from it in the more slender form of the body, the longer 

 head, and the differently colored and proportionately shorter antennae. 

 Specimens of the Javanese B. biiierz'is (Kobtis) are not available for 

 comparison. 



Merothrips fusciceps new species. ("Plate VIL, figs. 1-4.) 



Female (macropterous). — Length about i mm. Color pale grayish brown, 

 slightly more yellowish by reflected light ; head and antennae, except for 

 second segment, darker; legs and second antennal segment grayish yellow; 

 wings pale brown. 



Head distinctly striate behind, 1.5 times as wide as long, broadest across 

 the eyes; cheeks short and almost parallel; vertex rounded, with a pair of 

 bristles longer than the first two antennal segments just anterior and mesad 

 to the posterior ocelli ; three pairs of small bristles between the eyes. Eyes 

 large, three times as long as their distance from posterior margin of head, 

 extending a little further back on the ventral surface ; interval between the 

 eyes about one and one-third times their width. Ocelli present, the anterior 

 directed almost straight forward, the two posterior widely separated, placed 

 at and contiguous with the front margin of the eye ; ocellar pigment dark 

 reddish brown. Antennae almost three times the length of head, arising from 

 its lower surface ; segment i about half hidden in dorsal view by the overhang- 

 ing vertex, short, cylindrical ; 2 longer and very slightly wider than i ; 3 and 

 4 irregularly elliptical, with a transversely elongated, transparent sense area 

 on the outer anterior margin ; 5 small, subcircular ; 6 and 7 subelliptical and 

 almost equal in length ; 8 tapering from the posterior third to a blunt point. 

 Color grayish brown, except for segment 2 which is more transparent grayish 

 yellow. Mouth cone rounded, about .84 as long as basal width ; maxillary 



