1 64 FAUNA HAWAIIENSIS 



in none of which are these latter at all prominent ; the form from Hawaii is sufficiently 

 distinct in appearance to rank as a geographical variety, which may be named diti'ecta. 

 The costa of the forewings is more arched than in the following species, and the anterior 

 edge of median band more strongly curved. 



(lo) Eucymatoge monticolans But!. 



Eupithecia monticolens Butl. Ann. Mag. Nat. Hist. (5) vii., 1881, p. 320. 



^%. 19 — 29 mm. Head, thorax, and abdomen white, sometimes ochreous-tinged, 

 sometimes variously spotted or mixed with dark fuscous, abdomen sometimes with 

 brown or black subbasal ring and dorsal and lateral series of spots. Forewings rather 

 elongate-triangular, costa hardly arched, termen obliquely rounded ; white or fuscous- 

 whitish, sometimes fuscous-suffused or irrorated with dark fuscous or black, with 

 numerous more or less distinct dark fuscous or blackish striae, which are sometimes 

 partly suffused with ferruginous-brown ; edges of median band more strongly black- 

 marked, anterior gently curved, posterior very slightly prominent near costa and rather 

 strongly rounded-prominent in middle, usually followed by two more distinctly whitish 

 striae ; discal spot roundish, black, large or dotlike or often wholly absent, in one dark 

 specimen white ; praesubterminal stria often more strongly black-marked, especially on 

 two spots above middle, opposite which are also often two postsubterminal similar 

 spots. Hindwings with termen rounded, waved ; colour and markings as in forewings, 

 but usually more uniformly and less distinctly striated, or striae sometimes nearly 

 obsolete, not black-marked except on dorsum, discal dot indistinct or absent. 

 (Plate HI. figs. 3, ia—2,i.) 



130 specimens; 13 Kona, Hawaii, at 3000 — 4000 feet; 5 Kilauea, Hawaii; 21 

 Olaa, Hawaii ; i Hilo, Hawaii, at 2000 feet; 15 Haleakala, Maui, at 2000- — 9000 feet; 

 2 Lahaina, Maui, at 3000 feet; 8 Lanai, at 2000 — -2500 feet; 20 Molokai, at 3000 — 

 4000 feet; 29 Kaholuamano, Kauai, at 4000 feet; 16 Waimea Mts., Kauai, at 4000 

 feet ; apparently therefore generally distributed throughout the group, and is on the 

 wing all the year round. It is an extraordinarily variable species, yet easy of 

 recognition, and shows no distinguishable geographical forms, but the largest and 

 most striking specimens are from Maui, those from Molokai are rather small and 

 uniform in appearance, those from Lanai are also small and darker or more brownish- 

 tinged. I have modified for orthographical reasons Butler's specific name. 



Hydriomena Hub. 



Face with conical tuft of scales. Antennae in t ciliated. Palpi rough-scaled. 

 Abdomen not crested. Forewings: areole double. Hindwings: 8 anastomosing with 

 cell to beyond middle. 



