Hcbard — Dcniiapfera and OrtJiof'tcra of Ilaz^'aii 319 



Since Rornians' first record of this species, from Hawaii as 

 py.gidiata, material from tliese islands has been referred incor- 

 rectly to that species by all subseqnent authors. It has been defi- 

 nitely recorded from Kona, Hawaii, and Perkins has stated that 

 it is "widely distributed; found under the bark of trees in the 

 mountains." 



Burr has pointed out th.e differences between the Hawaiian 

 insect and true pyi^idiata^'' but did not consider the former dis- 

 tinct. We are convinced that the dift'erences noted fully warrant 

 our present action. 



Though closely related to pyi^idiata, diibronyi may readily be sepa- 

 rated by the paler and different coloration, decidedly shorter tegmina 

 and wings, male pygidium with interval between distal projections less 

 than that between these and the lateral projections, male forceps with 

 meso-distal tooth the termination of a gradually widening flange and 

 situated ventrad rather than dorsad on the internal surface, and female 

 forceps with internal margins heavily and irregularly serrate in proximal 

 two-thirds, with a moderate and gradually narrowing flange of the ventro- 

 internal margin in distal third and without a trace of median widening. 



Both sexes of pvi^idiafa have been figured by Dubrony,^* 

 the female of the present species by Burr.^^ 



In certain features, this very much smaller insect shows a 

 somewhat similar development to that found in Sphingolabis ha- 

 waiicnsis ( Bormans ) . 



Type: $ ; Hauula, Hawaii. August 2, 1914. (O. H. Swezey.) 

 [Hebard Coll., Type No. 769.] 



Size small, form slender. Head with scattered pile and delicate, 

 erect hairs, shining ; distinctly but angularly cordiform, owing to the 

 rather abrupt rounding of the latero-caudal portions of the occiput and 

 a broad though distinct obtuse-angulate emargination of the caudal mar- 

 gin ; the medio-longitudinal suture weakly indicated in occipital portion. 

 Eyes very small, scarcely over half as long as cheeks. Antennae with 12 

 or 13 joints; first large, about as long as third plus twice length of 

 second,"' expanding suddenly at end of proximal third, thence with sides 



''Fauna Br. India, Dermapt., p. 123, (1910). 



"Ann. Mus. Stor. Nat. Genova, \iv. p. 365, 3 figures, (1879). 



'■'Fauna Br. India, Dermapt., pi. v, lig. 41. ( . nee ). igio). 



'" It is clear that slight individual variation occurs in the length of 

 the proximal antennal joints. In some specimens such differences are 

 apparent between the antennae. 



