150 INSECUTOR INSCITI;^ MENSTRUUS 



Frankliniella tritici (Fitch) ? 



One male, almost certciinly this species, was taken with many speci- 

 mens of F. insularis, at Mayagiiez, Porto Rico, March 4, 1912, by 

 C. W. Hooker, in blossoms of orange. 



Selenothrips Kamy. 



191 1. Selenothrips Kamy (a subgenus of Heliothrips Haliday), Ent. Rundsch., 

 XXVIII. Jahrg.. No. 23, p. 180. 



The name Selenothrips was proposed as a subgenus of Heliothrips, 

 and in it were placed Ph^sopus ruhrocinda Giard and a new species, 

 Heliothrips {Selenothrips) decolor Kamy. I believe the group entitled 

 to generic rank. 



Type : Ph\)sopus rubrocincta Giard, by present designation. 



Selenothrips rubrocinctus (Giard). 



This important insect enemy of the cacao in the West Indies is repre- 

 sented by many specimens of both sexes, with the foUowing data : 



Mayagiiez, Porto Rico, November 21, 1911, C. W. Hooker, on cacao. 

 Mayagiiez, Porto Rico, December 5, 191 1, C. W. Hooker, on cacao; No. 1602. 

 Mayaguez, Porto Rico, April 9, 1912, C. W. Hooker, on mango; No. 1234. 



Heliothrips haemorrhoidalis (Bouche). 



Represented by one female, taken in company with many specimens 

 of Selenothrips rubrocinctus, on cacao, at Mayaguez, Porto Rico, No- 

 vember 21, 191 1, by C W. Hooker. 



Dinurothrips, new genus. 



(^sivd^, wondrous, strange; ovfjd, tail; 6pi^, a wood worm.) 



Body deeply reticulate. Head broader than long, cheeks swollen ; 

 vertex elevated between the eyes in the form of a hump and produced. 

 Eyes protruding, surrounded by a more or less distinct furrow. Ocelli 

 approximate ; anterior ocellus overhanging, directed forward. Antennae 

 8-segmented, very slender (excepting the first two segments) ; sense cones 

 simple; segment 8 long, needle-like. Maxillary palpi 2 -segmented. 

 Prothorax strongly transverse, slightly shorter than head, without long 

 bristles ; lateral margin broadly explanate in anterior half. Wings slender, 

 not reticulated ; forewings strongly recurved at apex and saber-like in 

 form, with two longitudinal veins following near the margins to apex ; a 

 distinct " ring vein " in basal third ; costal spines and those on the two 

 longitudinal veins very short, slender, and inconspicuous; costal fringe 



