NO. 2008. NEW SPECIES OF THY SAN OPT ERA— MORGAN. 13 



underside of four near tip ; a short cone on outer margin of five near 

 tip and a longer cone on inner margin of six near the tip. 



Prothorax about one and one-half times as long as the head, and 

 about one-half wider than long, sides and angles rounded; transversely 

 striate; spines numerous and minute dorsally. Mesothorax consider- 

 ably wider than prothorax, its front angles rounded and bearing a 

 shoulder-like process. Mesoscutum faintly reticulate. Metathorax 

 smoothly joined to mesothorax and tapering gradually to base of 

 abdomen. Metascutum plainly reticulate. No spines visible on 

 meso- or metathorax. Meso- and metathorax heavily tinged with 

 orange. Wings well developed, reaching about to the ninth ab- 

 dominal segment; at the middle about one-eleventh as broad as 

 long; the fore longitudinal vein fades out near the tip of the wing, 

 the hind vein fades out at the last fifth of the wing. Front fringe 

 sparse but long, brownish; hind fringe on both wings rather sparse, 

 long and straight, brownish. Spines upon costa and veins short, 

 indistinct and nearly transparent upon most specimens, one speci- 

 men, however, has short, stout, dark brown spines. Costa bears 

 about 22 spines, fore vein 15, hind vein 9. Tip of fore wing bears a 

 stout dark brown spine which is about three times as long as other 

 spines on wing; scale bears 5 spines. Two cross veins present, one 

 extending obliquely from fore to hind vein, joining the hind vein just 

 beyond the second spine, second cross vein is between fore vein and 

 costa at about the middle of the wing. The second cross vein is lack- 

 ing in some specimens. The single median vein of the hind wing 

 reaches nearly to the tip. Fore wing is light j^ellowish, hind wing 

 gray — nearly white — except for median brownish tinge. Legs con- 

 colorous with body, strong spines only at inner tip of hind tibiae. 

 Other spines on hind tibiae weak. A dark spot at the tips of all tarsi 

 within. 



Abdomen rather stout, broadening to the fifth segment, thence 

 narrowing to the tip, segments 7 to 10 sharply conical. First seg- 

 ment weakly reticulated upon the dorsum, 2 to 7 weakly trans- 

 versely striate. Each dorsal plate 2 to 8 bears four spines, on plates 

 2 to 4 the median pair stands close together near anterior of seg- 

 ment and the lateral pair are only slightly removed from the margin; 

 on segments 5 to 8 median spines diverge and the lateral spines are 

 successively farther from the anterior edge until on the eighth seg- 

 ment they stand near the middle of the segment. Tip of ninth 

 segment dorsally bears a transverse row of six spines of medium size 

 and brownish in color, of these the median pair is the shortest and 

 the second pair the longest. Tip of tenth segment dorsally bears 

 four minute slender spines. Each pleural plate, segments 2 to 8 

 bears two short, stout, brownish spines directed caudally. Abdomen 



