HO ENTOMOLOGICAL NEWS [Mar., 'll 



cess, and a little behind that a bidentate, chitinous process with a mi- 

 nute median tooth. Pupal skin thickly set with chitinous points or cor- 

 rugations. Abdominal segments each with the dorsum ornamented 

 with two sparse, transverse rows of stout spines, these becoming irreg- 

 ular on the terminal segment, the apex being marked with a group of 

 two or three divergent, sublateral spines. 



Larva.. Length 2 mm. Rather stout, white, distinctly segmented ; 

 head extremely broad, only the tips of the slightly protuberant mouth- 

 parts being fuscous; antennae short, extremely minute, the whole great- 

 ly obscured by the large, strongly chitinized breastbone, which latter is 

 broad, anteriorly, quadridentate, being divided by a median incision into 

 two groups of minor teeth; shaft rather indistinctly chitinized and sup- 

 ported by submedian, chitinous, rounded lobes ; skin coarsely shagreen- 

 ed. 



Type Cecid a2i:8, N. Y. State Museum. 



Hyperdiplosis eupatorii n. sp. 



This species was reared from a green, conical gall with a 

 length of about 4 mm. and a diameter of 1.5 mm., on the upper 

 surface of the leaves of Enpatorium, the insects pupating 

 within the deformity. This form is provisionally referred to 

 Hyperdiplosis, because it agrees therewith in the triarticulate 

 palpi, the reduced circumfili and the deeply and roundly exca- 

 vated ventral plate. The antennal stems of the typical Hyper- 

 diplosis are more produced and the claws more strongly bent 

 than in this West Indian form. 



Male. Length i.i mm. Antennae l /2 longer than the body, thickly 

 haired, fuscous yellowish; 14 segments, the fifth having the basal por- 

 tion of the stem with a length l /2 greater than its diameter, the distal 

 part with a length 2 l / 2 times its diameter ; basal enlargement subglo- 

 bose, a sparse subbasal whorl and a subapical circumfilum, the loops 

 short and reaching only to the middle of the stem; the distal enlarge- 

 ment with a length J^ greater than its diameter, a scattering whorl of 

 setae, subbasal and subapical circumfili, the loops of each short, those 

 of the distal filum not extending to the tip of the segment ; terminal 

 segment having the distal enlargement subcylindric, with a length 2 l /2 

 times its diameter and a stout, finger-like process apical!}'. Palpi ; first 

 segment short, irregular, the second with a length three times its width, 

 the third nearly twice the length of the second, more slender. Mesono- 

 tufn light brownish red, the yellowish submedian lines sparsely haired. 

 Scutellum and postscutellum yellowish. Abdomen yellowish red, the 

 fifth to seventh segments yellowish ; genitalia reddish. Wings hyaline. 



