36 INSECUTOR INSCITI^ MENSTRUUS 



as well as by the much longer posterior marginal bristle of the 

 prothorax and the larger eyes, which are broader than their 

 interval. 



Dr. Townsend has kindly given me his notes on this insect, 

 which I quote in full : 



"May 27, 1911. Several large black thrips found in cotton 

 squares at Catacaos. 



"July 8, 1911. Many of this species issued from Catacaos 

 squares of yesterday. 



■'July 29, 1911. All through this month hundreds of this 

 thripid have issued from lots of squares and newly-set bolls 

 from twenty localities in the Rio Piura and Rio Chira valleys. 

 Must cause considerable injur}^ by sucking the sap from the 

 squares. 



"August 6, 1911. Hundreds of this species in tubes of 

 various lots of squares, especially when newly brought in. 

 Very abundant today, for example, in Santa Clara squares of 

 yesterday. Also in Cumbivira squares and newly-set bolls 

 of yesterday." 



Hoplandrothrips russelli, new species. 



Female ( macro pterous). — Length about 2 mm. Color dark 

 blackish brown (almost black) with tarsi, apical portion of 

 fore tibiae, and bases of intermediate antennal segments, yellow. 



Head about 1.5 times as long as wide and about one and 

 three-fourths times as long as prothorax, sides abruptly 

 rounded to eyes and with a slight subbasal constriction, inter- 

 mediate portion parallel, with six large prominent, spinif- 

 erous tubercles ; entire dorsal and lateral surfaces closely 

 and strongly reticulate except along median line, and with a 

 few minute spines ; vertex rounded, slightly produced, over- 

 hanging; postocular bristles alone prominent, two-thirds as 

 long as eyes, expanded at apex. Eyes about one-third as long 

 as head, about equal in width to their interval. Ocelli of 

 posterior pair distinctly in advance of middle of eyes and 

 somewhat larger than the anterior ocellus, which is slightly 

 more distant. Antennae about 1.6 times as long as head, 

 slender ; segment 1 distinctly longer than broad ; 2 about twice 



