KO. 2242. MORPHOLOGY OF THE UTREFiUPTERA— PIERCE. 469 



Following is a translation of the original description, with com- 

 ments in brackets: 



il/«Ze.— Length 2.75 mm.; wing expanse 3.5 mm. Color brilliant 

 pitchj^-brown. Form rather slender, with abdomen elongate, as long 

 as the costal margin of the wings. 



Head very large, transverse, slightly cleflexed. Front concave be- 

 tween antennae which are attached beneath little angular salients. 

 Eyes enormous on great peduncles, hemispherical, with fifty great 

 ocelli. Face with rudimentary mandibles [as illustrated for Gyrto- 

 caraxenos] and maxillae without lacinia [Jeannel's illustration, fig. 

 3, is apparently at fault in the delineation of the maxillae]. An- 

 tennae slender, first two joints simple, cylindrical, the first a little 

 longer than broad, the second almost as long as broad; joints 3 and 

 1 almost as long as joint 2; joint 5 half as long, very flat, joint 6 a 

 little longer but smaller; joints 3 to 6 laterally flabellate, strongly 

 punctate [rather, provided with organs of sense] ; flabellum of 

 third about one-fifth longer than that of the fifth; joint 7 similarly 

 elongate, as long as flabellum of fourth and longer than fifth. 



Prothorax annular, not anteriorly arched, slightly longer on dor- 

 sum, separated from mesothorax by intersegmental skin, on which 

 iire a number of small chitinous sclerites. Mesothorax formed of a 

 transverse mesonotum, a little mesosternal piece, and large oblique 

 pleural pieces. Elytra inserted at upper edge of mesopleural piece, 

 with a small V-shaped stigmatal piece covering the orifice of the 

 spiracle at its base. Coxal cavities open behind. Metanotum com- 

 posed of triangular praescutum flanked by "pleuri " [scuti] a little 

 longer than itself; scutellum transverse pentagonal; [parascutellum 

 oblique, subquadrate] ; postlumbium membranous ; postscutellum 

 very large, navicular, covering first two abdominal segments. Meta- 

 sternum formed of two elongate pieces in juxtaposition on median 

 line. [This is the line of the furca, usually found only on the 

 sternellum.] 



Abdomen with 10 segments. Sternites more strongly chitinized 

 than tergites. [Jeannel has misinterpreted the last three segments. 

 He calls the eighth the ninth, and calls the ninth the tenth, and the 

 tenth the anal tube. He refers to the ninth and tenth as the 

 " podex." In reality, the eighth segment is ventrally produced to an 

 acute point, reaching as far as the ninth. The ninth is likewise nor- 

 mally produced and concave, bearing at its extremity the oedeagus. 

 The dorsal portion of the ninth is not shown in Jeannel's drawings. 

 The tenth is like a flap over the oedeagus.] 

 Female. — Unknown. 



