Neuroptera of the Hawaiian Islands. 227 
(and at the same time most puzzling) feature of the Neuro- 
pterous fauna. 
Termitide. 
Calotermes castaneus, Burm. 
Calotermes castaneus, Burm.; Hag. Monogr. p. 38. 
Two examples, gummed on card (Blackburn, No. 18). 
A widely distributed species in America, ranging from 
California to Chil. In the Hawaiian individuals the wings 
expand to about 33 millim., their colour pale (almost whitish), 
and in the posterior wings the median nervure originates at 
about the basal fourth of the subcosta. These points are 
mentioned as the species appears to be variable. 
Calotermes marginipennis, Latr. 
Y ye *7199777 ., ys au 
Calotermes marginipennis, Latr.; Hag. Monogr. p. 47. 
Two examples, gummed on card (Blackburn, No. 11). 
A species recorded from Mexico and California. The 
Hawaiian examples are of small size (expanse 20 and 25 
millim. respectively), but they agree otherwise, especially in 
the median nervure being nearly equidistant between the sub- 
costa and submedian. 
Embide. 
Oligotoma insularis, n. sp. 
Body entirely pitchy fuscous; mouth-parts inclining to 
reddish ; clothed with fine whitish pubescence. Head gently 
convex above, with no discal depression. Eyes large, coarsely 
faceted, black. Antenne fuscous, annulated with whitish at 
the sutures, more than 18-jointed (mutilated), basal joint 
short and stout, second still shorter but much thinner, the 
succeeding joints elongate, slender, obconical. Pronotum 
more than twice as long as broad, much narrower than the 
head, the sides slightly dilated in the middle, the anterior 
portion slightly narrowed; a transverse impressed line ante- 
riorly before the margin. Meso- and metanota nearly equal, 
each much longer and broader than the pronotum. Anal 
styles long and slender (asymmetric), the joints nearly equal. 
Legs pitchy fuscous, clothed with whitish pubescence; tro- 
chanters, knees, and tarsi pale testaceous. 
Wings narrow, pale fuliginous, the coalescent subcosta and 
radius dark fuscous; rest of the venation fuscescent ; sector 
simply furcate from about its middle in the anterior wings 
