116 



slightly but distinctly convex ; more prominent antennal tooth ; 

 the mesonotal sculpture less dense. 



The interest attached to this species lies in its Hylocrahro 

 affinities. Dr. R. C L. Perkins, in a letter to me about this in- 

 sect, remarks that it '"connects Hylocrahro still more closely with 

 Melanocrabro and I should not wonder if its female is not what 

 I call Hylocrahro/' 



New and Little-Known Derbidae. 



BY ^. MUIR. > 



The species described in this paper were collected by the 

 writer during 1913-14, or were presented to him by entomolo- 

 gists in Formosa during his visit there. The addition of 17 

 species to the Java list indicates the richness of that island, 

 especially when we consider that the writer only had three days 

 collecting in suitable localities, and that nearly all his specimens 

 were taken at Bendoredjo during one morning's collecting. For- 

 mosa and Philippines will also prove to be very rich. The 

 family already has some eighty genera and nearly four hundred 

 species, and when the South and Central American, as well as 

 the Indo-Malayan areas, are more closely worked this number 

 will be easily doubled. They are forest insects, all the nymphs 

 as far as is at present known, living in rotten trees. 



The measurements are from the apex of head to anus, and 

 from base to apex of one tegmen. 



Vekfxta Dist. 



(1) pseudohadia sp. n. 



^ This differs from the Bornean species badia in the spot on costa 

 being smaller and having no darker spot in center of it, also in the 

 genitalia as follows: Apex of anal segment truncate or slightly emar- 

 ginate instead of pointed; styles narrower, ventral edge entire, dor- 

 sal edge produced into wide angular process in middle, apex blunt, 

 turned inward; whereas in hadia they are broader, the dorsal edge 

 straight and the apex with small, sharp, inwardly turned apex. 



Length 2. 5 nun. ; tegmen 4mm. 



Hab. Bendoredjo, Java ; on palms (Muir, March). 



Proc. Haw. Ent. Soc. Ill, No. 2,* July, 1915. 



