76 Bulletin American Museum of Natural History [Vol. XLII 



Prothorax with angles rounded, slightly wider than the head; pronotum well 

 developed, entirely chitinized, two tubercles on each side of its caudal half, two setae 

 on each side just inside of the lateral half of the anterior margin; sagittal line present; 

 presternum chitinized in front of the coxae. Meso- and metathorax shorter but 

 slightly wider than the prothorax and about the same size as each other; mesonotum 

 with two large, quadrangular sclerites almost as wide as the segment but not attaining 

 the sides; a lateral tubercle on each side and a spiracle on the tip of a minute tubercle 

 in front of each; metanotum with a pair of narrow, elongate sclerites on its anterior 

 half; the posterior half with two areas, corresponding in position to the sclerites on 

 the anterior half, chitinized and with two tubercles arising from each; a lateral 

 tubercle bearing a short, colorless seta present on each side. 



Legs short, not visible from above, about as long as half the width of the thorax; 

 coxae transverse and grooved to receive the femora; femora a little longer than wide; 

 tibiae about as wide as long and shorter than the femora; tarsi claw-like, inconspicu- 

 ous, shorter than the latter, and bearing a single inner seta; the two anterior coxae 

 are closer together than the four posterior coxae which are about the same distance 

 apart. 



Abdomen with eight distinct segments, the first three slightly widened, the next 

 five narrowed very slightly caudally and the ninth and tenth forming the atrium. 

 First seven tergites similar and each with three transverse folds, clearly defined only 

 in the middle; intersegmental membranes with a single fold; each praescutum bears 

 a pair of oval chitinized patches. The tubercles on the folds are arranged as follows: 

 one each side of the first and third folds about half-way between the median line and 

 the side of the segment; two tubercles on each side half-way between the former 

 tubercles and the lateral tubercle of the segment ; one placed nearly behind the other 

 (the anterior one bears the spiracle) ; two on the second fold, each arising from an 

 elongate chitinized area on each side of the median line; a dorsal tubercle on each 

 side of the intersegmental membrane. The middle region of the membranes has a 

 narrow, elongate, chitinized area. Spiracles on small tubercles. There are apparently 

 three longrftidinal rows of lateral tubercles, the dorsal two being the most prominent. 

 The eighth tergite represents the superior valve of stigmatic atrium. The caudal 

 margin nearly straight but indistinctly lobed. The mesocerci prominent and broadly 

 dome-shaped. 



Ftjll-grown Larva. — Length, 4.57 mm. (extended); width, 1.02 mm. at the 

 third abdominal segment; not depressed. Yellowish except tubercles, which are 

 brownish and much more pronounced than in the first instar. 



Head, dorsally, 0.4 mm. wide and 0.35 mm. wide; retractile. Epipharynx with 

 spinous surface prominent. Antennal segments more elongate. Labro-clypeus 

 with the teeth prolonged forward more distinctly, tridentate; lateral tubercles promi- 

 nent and subconical. There are three transverse folds on each abdominal sternite 

 and one on the ventral side of the intersegmental fold. 



Pupa. — Length, 2.42 mm.; width at its thorax, 1.345 mm. Entirely whitish, 

 except the eyes. Head smooth and bears two supraorbital styli. Pronotum smooth, 

 its anterior margin somewhat trilobed and its posterior margin straight. The styli 

 are arranged as follows : ten near the anterior margin, four 1 of which are on the middle 

 lobe; ten 2 near the posterior margin counting the two corner ones; a transverse row 



iThe outer two of these are more anterior in position than in Cymbiodyta or Philydrus. 

 2 Medio-la teral setae are more posterior so that they may be considered in the posterior row. 



