Hood — A Remarkable New Thrips from Amtralia. 51 



surface of head with their median and caudad margins forming a very 

 acute angle. Ocelli minute, posterior pair widely separated. Antennfe 

 about 1.6 times as long as head, formed almost as in Trichothrips anomo- 

 cerus Hood; segment 3 clavate, about equal in length to segment 2; 4-6 

 oval, pedicellate; 7+8 lanceolate, pedicellate; segments 1-3 slightly paler 

 than head, 2 paler along middle and at apex, 3 paler at base; 4-8 

 concolorous with head. ]Mouth cone large and heavy, formed as in 

 Cryptothrips, nearly attaining posterior margin of prosternum; labium 

 rectangularly rounded at apex, subequal in length to labrum. 



Prothorax along median dorsal line about half as long as head and 

 (inclusive of coxfe) about 2.9 times as wide as long; pronotum without 

 sculpture, anterior and posterior margins nearly concentric; all usual 

 bristles present, slightly dilated at tip, the two pairs at the posterior 

 angles about equal in length to postoculars, others shorter. Pterothorax 

 slightly wider than prothorax. Legs short, rather stout; fore tarsus 

 with a rather small stout tooth. 



Abdomen stout, about 1.3 times as wide as prothorax, broadest at 

 about segment 5, thence rounded to base of last segment ; segments very 

 transverse, five or more times as wide as long. Terminal segment greatly 

 swollen, heavily chitinized, about .83 as wide as long, parabolic in dorsal 

 aspect; surface roughened, with scale-like thickenings and numerous 

 stout spines (see figure). 



Measurements of holotype. — Length 1.33 mm. ; head, length .254 mm., 

 width across eyes .180 mm. ; prothorax, length, .138 mm., width (inclu- 

 sive of coxpe) .400; pterothorax, width .432 mm.; abdomen, width .552 

 mm.; terminal segment, length .216 mm., width .180 mm. Antennal 

 segments: 1, length 42ai; 2, length 63m, width 36/u; 3, length 63m, width 

 30m; 4, length 56m, width 35m; 5,60m; 6,57m; 7,45m; 8, 20m ; total length 

 of antenna .41 mm. 



Described from one female taken at Nelson, North Queensland, Australia, 

 August 17, 1912, by A. A. Girault, by "sweeping top of Pyramid Mt., 

 3000 ft,, Casuriva and bushes." 



