14 PROCEEDINGS OF THE NATIONAL MUSEUM VOL, 125 
Diliacos ribbei ribbei (Betrem) 
Bismarck Archipelago: 2 9, 1 o, Illugi, Upper Warangoi, Gazelle 
Peninsula, New Britain, 230 meters, 8-11 and 12-15 December 1962, 
J. Sedlacek. 1 9, Gaulim, Gazelle Penin., 140 meters, 21-26 October 
1962, J. Sedlacek. 
Females of the typical subspecies of ribbet were unknown previously. 
These specimens from New Britain key to couplet 62 (Krombein, 
1963, p. 563). Females of typical ribbei are intermediate in density of 
punctation between ribbei stueberi (Krombein) from northern New 
Guinea and ribbei hurdi (Krombein) from the Solomon Islands. As in 
ribbet stueberi the front between the spatium frontale and the anterior 
ocellus is impunctate except for a few scattered punctures in the ocular 
sinus and along the inner eye margin, but the ocellar triangle has one 
or two punctures instead of being impunctate and the posterior half 
of the scutum has 15-20 scattered punctures between the parapsidal 
furrows instead of being impunctate. In contrast, the more densely 
punctate ribbet hurdi has about 30 punctures on the front between the 
spatium frontale and anterior ocellus, the ocellar triangle has half a 
dozen punctures, and the posterior half of the scutum has 44-50 punc- 
tures between the parapsidal furrows. Each female of ribber ribber has 
only two discoidal cells in the forewing. They are 13-15 mm long, and 
the forewing is 10-12 mm long. 
Diliacos ribbei hurdi (Krombein) 
Solomon Islands: 1 9, Pepele, Kolombangara Island, 0-30 meters, 
3 February 1964, P. Shanahan. 1 Go, Iriri, Kolombangara, New 
Georgia Group, 2 meters, 3 July 1964, J. and M. Sedlacek. 1 &%, 
Nalimbu River, 29 km southeast of Honiara, Guadalcanal, 5 June 
1960, C. W. O’Brien. 
Diliacos glabrata glabrata (Micha) 
Northern District, Papua: 1 9, Popondetta Mission, 60 meters, 
18 October 1963, P. Shanahan. 1 9, Gona Road, Popondetta District, 
60 meters, 30 October 1963, H. W. Clissold. 
Morobe District, Terr. New Guinea: 3 9, 1 o&, Wau, 1200-1300 
meters, 1 and 14-17 January 1963, 17 May 1965, and 14 November 
1965, J. and M. Sedlacek and P. Shanahan, 2 9 in Malaise trap. 
1 9, 24 km west of Bulolo, Upper Watut River, 760 meters, 5-6 March 
1963, J. Sedlacek. 1 9, ca. 8 km west-northwest of Lab Lab, Umboi 
Island, 300 meters, 8-19 February 1967, G. A. and S. L. Samuelson, 
and P. H. Colman. 
West New Guinea: 1 9, Genjam, 40 km west of Hollandia, 100-200 
meters, 1-10 March 1960, T. C. Maa. 
