TIII-: <;vi'sY MOTH APPENDIX. 75 



o!' dvpeii- ,-tronglv bilobed, each anterior angle bearing a 



I 1 



prominent spine: top of the clypeus -.lightly hollo\\'e<| 

 toward the dorsal line. The spines are the same in number 

 and arrangement as in the previou- -tage-. Eyes near base 

 of antenna-, not prominent. The antenna 1 (Plate 3, Fig. (!) 

 are setaceous, short, lour jointed, and ari-e from an e|e\a- 

 ;ion at the l>a>e of the mandibles. First joint short, cylin- 

 drieal and naked : -econd joint nearly twice as Long, slightly 

 clavate and hearing a sliort hair near the middle of tlie 

 outer margin: third joint a little shorter than the -econd. 

 somewhat clavate and having one anterior angle -lightly 

 produced, and bearing three spines, which arise near the 

 outer angles ; la-t joint as long as the first, nearly cylindri- 

 cal and bearing three spine- at the apex. Mandibles large, 

 stout at ba>e, with a prominent dorsal carina. A strong, 

 -imple, blunt tooth (Fig. 9) arises near the ba-e. The 

 mandible gradually tapers from the outermost insertion ot 

 this tooth to a somewhat chisel-shaped point. The maxilla. 1 

 (Fig. 8) are small, ferruginous in color, and are den-ely 

 covered with hairs and spines. They bear four-jointed, 

 naked palpi, which are nearly as long as the antenna.'. The 

 three inner segments of the maxillary palpus are short, 

 stout, truncate and of nearly equal length ; the terminal 

 joint is slightly longer than the two preceding joints, ob- 

 loni:' ovate in form and truncate at the tip. The galea or 

 inner lobe is naked, two jointed and as long as the three 

 basal joints of the palpus. Lacinia prominent and hearing 

 a >pine at its apex. Labium (Fig. 7) small, somewhat hal- 

 bert shaped, with numerous .-pines arranged in an oval row 

 on the inner side. Palpi t wo jointed : outer joint the longer 

 and truncate at lip. 



The dorsal thoracic plate- are large, and nearly cover the 

 lateral thoracic walls, while the dor-al abdominal plate-, 

 with the exception of the la-t, are .-mailer, and allow the 

 lateral walls of the abdomen to protrude. Dor-ai line not 

 prominent. Kach abdominal plate except the la-t bear-, 

 near the posterior margin, a very feeble lr:insver>e carina. 

 Spine- are arranged &s in the preceding -tage. The la-t 

 -egmeiit (Plate 4, Fig. h i> relatively -mall, nearly trun- 

 cate behind : the caudal appendage- of modi-rale length, and 



