386 



pliacld,- Aloha kirkdJdyl. is attaelied to E. liiUchidHdl growiiiu- 

 on the same ridge of Kaala before referred to. Another Eu- 

 pJiorbia insect and one of the most interesting" of onr endemic 

 insects is the hizarre DeJpliticld. Dldyuphoiodelpliax ynlrahiJls 

 Swezey, which the writer had the ])leasure of rehiting to its 

 foodphmt Euphorbia chtsiacfoJla in lt»l(i and hiter with ^Ir. 

 Timberlake and Mr. Swezev of finding it attached on ]\It. 

 Kaala to E. hUlehmndi some twenty-five miles in an aii'line 

 from its original habitat in the other range of monntains. On 

 May 6, 1917, while collecting in Wailnpe in the southeastern 

 Koolan ^[oimtains in company with ]\[r. Swezey after clim1)ing 

 ont of the valley at the end of the nu(hlle ridge dividing the 

 two main branches of the valley at an elevation of about twelvp 

 or fifteen hundred feet we came upon some bushes of a Eu 

 phovhla determined for me by Mr. Forbes as E. relasfroidcf 

 Upon sweeping these Imshes I secured four specimens of a 

 DictyophorodelpJia.r and when I informed jMr. Swezey of my 

 find, he secured two adults and a single nymph. Upon com- 

 parison of these specimens with D. mimhilis it became evident 

 that we had discovered a second species of this peculiar en- 

 demic genus of Delphacldac. It will be interesting to learn if 

 other species occur attached to other species of Euphorbia upon 

 the other islands. 



^' Dirtyophovodelphax swczeyl n. sp. 



Total length, 6 mm. ; length of the prolongation of the head in front 

 of the eyes, 2.5 mm. 



Closely resembling D. mirabilis Swezey but smaller and darker; the 

 prolongation of the head relatively shorter, more slender and tapering, 

 not bent downward apically but with a slight upward curve ; tegmina 

 proportionally a little longer but not reaching the apex of the abdomen. 



$ Genital styles blunt at the apex, only slightly curved, not pro- 

 longed into an acute curved tooth, apical slender portion of aedeagus 

 nearly in a straight line with the thicker basal portion. 



Nymph. The nymphs may be readily distinguished from those of 

 D. mirabilis by the much darker coloration and the less prolonged head 

 in corresponding instars. 



*This description supplied just before the MS. for this num1)er of 

 the Proceedings went to press. — [Ed.] 



