21\) 



thicker than the third segment, which is about two and one-half 

 times as long as wide; second antennal segment about one-half as 

 long as wide, and narrower than the third; third and succeeding 

 joints subequal, gradually tapering to the apex. Sculpture of head 

 and thorax somewhat coarser and less sparse than in the female. 

 Mouth parts and tarsi more yellowish than in the female. IVlandibles 

 obliquely truncate at the apex, with a strong and acute apical tooth, 

 the truncation quadridenticulate, with the inner denticle somewhat 

 produced. Anterior tarsi not appendiculate; middle tibiae not spinose. 



l)(\scribed from eleven females and eig'lit males taken on 

 Oaliu at Diamond Head April, 1916, and four females from 

 Koko Head Is'ovember, 1916, (J. C. Bridwell). 



Type, female and male, and paratjpes in the entomological 

 collection of the B. P, Bishop ]\Insenm of Polynesian Ethnol- 

 ogy and N'atnral History, and paratypes in the anthor's col- 

 lection. 



Closely related to Epyris armafitarsis Kieffer from Tnnis, 

 the excellent description of Avhich (Ann. Mns. Civ. Storia 

 Nat. Genova (3) 1:399, 1904) has been followed in detail here. 

 The principal difference appears to lie in the strnctnre of the 

 mandibles. It is probal)le, however, that there is less differ- 

 ence than appears in the descriptions on aceonnt of the diffi- 

 culty in making- ont the pecidiar structure of these distorted 

 organs. 



Notes on Dictyophorodelphax mirabilis. 



BY J. ('. BRIDWELL. 



Among the Hawaiian insects Dictijoplioyndel pliax niimhilifi 

 Swezey has been of particnlar interest on account of its 

 pecnliar form and limited distribution. Its enormously pro- 

 longed head is a pecnliar development very rare among the 

 Delphacids, and the genus appears to be an endemic develop- 

 ment from the ordinary types of Delphacidae in the Islands. 



]\rr. Swezey has already described the nymphal forms as 

 well as the adults. Hntil recently it had appeared to be con- 

 fined to a single ridge of the Ivoolau mountains, but ^Nfr. Tim- 

 berlake has extended its known range to the ridge op]-)osite its 



Proc. Haw. Ent. Soc. Ill, No. 4, May, 1917. 



