THE CANADIAN ENTOMOLOGIST. 389 



71. In the Entomologist, 1902, p. 281, I renamed mensor, Champion, 



"naiades" on the ground that Champion's redescription did not 

 agree with White's diagnosis. A specimen from Brazil, recently 

 received, now confirms my former opinion. H. mensor, White, 

 differs from naiades ( = mensor, Champion) as follows : The 

 anteocular part of the head is only one-half longer than the 

 postocuiar part; the labium scarcely extends to the middle of the 

 latter part; the second segment of the antenna; is two and a half 

 times as long as the first, the third is two and a quarter times as 

 long as the second, and two and a seventh as long as the fourth; 

 the pronotum has a distinct (though not distinctly margined) 

 pale line on the pronotum, this line extending a little way onto 

 the head. 



72. Cylindrostethus naiades, sp. nov. 



Allied to C. persephone, Kirkaldy, but the under side is yellowish 

 throughout, except laterally. The upper side is blackish, with a metallic 

 greenish gleam, tending a little to brown on the abdomen ; a fulvous spot 

 on the base of the head, a very narrow fulvous line on the pronotum ; the 

 exterolateral margin of the pleurites, on both sides, narrowly fulvous. 

 The pale vitta on the fore femora is wedge-shaped, and is only basal. 



Length, 14-15 mill. 



Hab.: Malaca, Perak (my coll.). 



73. Cylindrostethus vittipes, Stal. 



Through the kindness of Prof. Aurivillius and Prof. Sjostedt, I have 

 been able to examine Stal's type of this species. It is not a Cylindro- 

 stethus, and is not an adult. 



74. Ptilomera luzonica, sp. nov. 



Apterous $ . Fulvous ; antennae, 4th and apex of 3rd, labial 

 segments, an elongate ovoid spot on 5th basal three-fourths of the 

 mesonotum, the metanotum (except laterally), the 2tid-6th tergites, and 

 down the middle of the 7th— 9th, a lateral line down the fore femora 

 (except at base), fore tibiae and tarsi, hind and middle legs (except cox*e 

 and trochanters), and a lateral stripe on the middle and hind ambulacra, 

 black or blackish, sometimes verging on piceous. Under side, ambulacra, 

 coxae, trochanters, labium, etc., pale luteous. There is scarcely any trace 

 of silvery pubescence laterally on the thorax, and there is no black lateral 

 line, but the poverty of the pubescence may be due to the poor condition 

 of the unique type. The metanotum is divided transversely, but not 

 longitudinally. The hind part of the metanotum is transverse, and nearly 



