No. 2305. ON SOME FOREST LEPIDOPTERA—EEINRICII. 89 



Pupa. — (pi. 13, fig. 82). Faint'w pitted on dorsum, othervase 

 smooth; as in Dasypyga except: 



More gradually tapering; vertex represented by very small trian- 

 gular areas adjacent to antennae; 8th, 9th, and 10th abdominal seg- 

 ments fused; no distinguishable suture,or dorsal prominence indicat- 

 ing same, betv>'een 9th and 10th abdominal segments; anal opening 

 on ventral surface close to caudal extremity. 



Specific description — Larva. — ^Full grown, 25-30 mm. long by 4 to 

 4.5 mm. broad. Body sordid whitish; legs, crochets, spriacles, 

 thoracic and anal shields, body setae and cliitinous areas around 

 tubercles dark smoky brown; thoracic shield sharply divided by a 

 rather broad, whitish median line; around each proleg below the 

 coxal setae {VII and VIII) a narrow brown cliitinous ring; crochets 

 70-80; setae moderatel}^ long; Ilia of abdomen easily discernable. 

 Head rich mahogany bro^\^l, the more heavily chitinized portion, 

 black; ocellar pigmentation weak, not continuous; setae and punc- 

 tm'es of ultra-posterior group easily distinguishable in a somewhat 

 irregular line continuous with PI, Ph, and P2. 



Pupa. — Color brown as in Dasypyga; 13 to 14.5 mm. long, 3.5 to 

 4 mm. broad at middle of body. 



Family PYRALIDAE. 



Subfamily Thyridinae. 



HEXERIS ENHYDRIS Grote. 



Plate 6, fig. 32; plate 7, fig. 39; plate 8, figs. 47, 48, 49, 50, 51; plate 13, figs. 83, 84. 

 Hexeris enhydris Grote, Dyar, List N. Amer. Lep., No. 4137. 



Two males of this species were reared May 29 and June 20, 1917 

 (under Hopk. U. S. Nos. 14996 and 15101) from pupae found in stems 

 of " Sea grape " (Coccolohis uvifera) at Miami Beach, Florida. Accord- 

 ing to Mr. T. E. Snyder of the Bm-eau of Entomology, w^ho collected 

 the material, the larvae mine and kill the young branches of the trees 

 and are present in such numbers as to be of considerable economic 

 importance. Dr. H. G. Dyar, who very kindly determined the moth, 

 informs me that its early stages and life history are unrecorded. 

 Therefore since it is also the type of the genus Hexeris a full larval and 

 pupal description is given. 



The male genitalia of the moth is figured on plate 6. (Fig. 32.) 

 General CJmracteristics — Larva. — (pi. 7, fig. 39; pi. 8, figs. 47, 48, 49, 

 50, 51.) Cylindrical; stout; tapering sharply at last three caudal 

 segments; 9th abdominal segment greatly reduced. Legs and prologs 

 normal. Crochets irregular in length but predominantly uniordinal 

 and in a complete circle. No anal fork. Prothoracic shield broad, 

 faintly divided by narrow median line. Spiracles conspicuous; very 

 narrovrb^ elliptical, almost slit-like on abdominal segments 1 to 7; 



