110 WILLIAM T. M. FORBES 



An aberrant genus representing a typically South American group, the " tropic 

 smooth type " of Dyar. 



1. P. scapha Harris. Fore wing with a large triangular, deep brown area extend- 

 ing from a quarter way out on costa to apex, and down to A, with a narrow 7 

 extension along costa to base; rest of w r ing pale brown, becoming silvery toward 

 the dark brown patch. 25 mm. (H 47:8.) 



The moth appears in July and August. Florida and Arizona specimens repre- 

 sent very distinct races ( argentimacula Barnes and McDunnough and trigona 

 H. Edwards). The larva is green, brown, and yellow, and lives on various trees 

 and shrubs. 



New York to Florida and Arizona. New York: Geneva, Ithaca, Florida, Rhine- 

 beck, Staten Island; Brooklyn, East New York, Newtown, etc., Long Island. Judg- 

 ing from the larvae seen, the species will prove much wider- spread. 



12. COCHLIDION Hiibner 

 (Limacodes Latreille) 



In this and the following genera, the male antennae are simple and laminate. 

 R and Mj of the hind wing are normally free. In the larva, the dorsal and lateral 

 areas are equally broad, and the subventral area reduced. The first stage has 

 simple setae. They are the " palsearctic smooth type " of Dyar. 



Moth of Cochlidion with palpi upturned to about the middle of the front, 

 longest in C. biguttata. Vestiture composed of hair and narrow spatulate hair. 

 Hind tibia? with all spurs, less heavily fringed than in Prolimacodes, but more 

 than in some of the later genera. Fore wing \vith apex rectangular; outer part 

 of costa and upper part of outer margin straight; all veins present; R 2 and R 

 both free, but approximate. Larva with small, but sharp, depressed spaces; with 

 posterior end not extended. Skin spinulated. In the first stage setae i and ii are 

 very unequal, on the same wart. 



1. C. biguttata Packard. Very pale gray, base and anal and apical spots wood 

 browTi, pale-edged, postmedial line nearly straight. 25-30 mm. (Limacodes 

 Packard. ) 



June and July. 



The larva has been found on oak only. It is pale whitish green, with a white 

 sub-dorsal line, edged with dark, and no transverse yellow line on anterior margin 

 of thorax. 



Montreal, Quebec to New York and Illinois. New York : Plattsburg, Ithaca, 

 Ronkonkoma and Yaphank, Long Island. 



2. C. rectilinea Grote and Robinson. Yellowish or reddish brown, the median 

 area rather grayer, with base darker; antemedial line white, preceded by a dark 

 line; lines across apex and at anal angle straighter, and not cutting off well- 

 marked dark patches. Hind wing rather darker gray-brown. Over 20 mm. 



The moth occurs in the South, perhaps not ranging as far north as Virginia, 

 northern records being based on C. latomia. 



New York: reported in the vicinity of New York (Beutenmuller, Grote, and 

 Robinson ) . 



3. C. latomia Harvey. Similar to C. rectilinea, but with paler fore wing and 

 pale, straw-yellow hind wing, no distinct spot at anal angle, and only a slight 

 dark shade before the antemedial line. (H 47:27.) 



New York to Texas; commoner southward. 



4. C. y-inversa Packard. Dull light ocherous, with pale or dark shades; lines 

 dark, even, sharply defined; antemedial from middle of costa to inner margin 

 at a third way out; a second line, parallel to it, below middle of wing; a line 

 across apex, and dark fringe; hind wing yellow. 25 mm. 



