MOTHS OF THE GENUS RHABDATOMIS — FIELD 57 



Length of forewing 6.5-7.5 mm. (average 6.8 mm.). 



Male genitalia as characterized in key and as illustrated by figure 6. 

 This species, along with extensa, has a harpe that is trilobed at its 

 apex; it differs from extensa in the shape of all three of these lobes 

 as well as in the shape of the juxta and aedeagus. 



Female. — Figure 27. Very similar to male, differing chiefly in 

 having hindwing and abdomen entirely fuscous, except for narrow 

 yellow border on costal margin of hindwing below. 



Length of forewing 8.5-9 mm. (average 8.8 mm.). 



Female genitalia as characterized in key, having verj'^ small signum, 

 consisting of very narrow and weakly sclerotized and slightly scobi- 

 nate area and with short cuplike ductus biu-sae. 



Type locality. — St. Jean, Maroni River, French Guiana. 



Additional type data. — Originally described from 15 males and 

 3 females, no single specimen of which was stated to be "the type" 

 in the original description. All 18 of these specimens are therefore 

 syntypes (article 73, paragraphs b and c, International Code of 

 Zoological Nomenclature, adopted by XV International Congress of 

 Zoology, London, 1961). Two of these syntypes bear the USNM 

 type number 10920 assigned by Dyar. In addition, one of these 

 two specimens bears a wiitten label containing the word "type" in 

 Dyar's handwriting. I hereby designate this specimen as the lectotype 

 and have so labeled it (USNM Type 10920; collection, William 

 Schaus; cf genitaha sHde WDF 1526). 



Location of type. — United States National Museum. 



Distribution, — French Guiana and Brazil: 



French guiana. — Maroni District, St. Jean, Maroni River. Brazil. — Pard. 

 Material studied. — 14 males and 4 females. 



Rhabdatoniis cora coroides (Schaus), new combination and new status 



Figures 28, 29 



Diarhabdosia coroides Scliaus, Ann. Mag. Nat. His., ser. 8, vol. 7, p. 368, April 

 1911. — Hampson, Catalogue of the Lepidoptera Phalaenae in the British 

 Museum, suppl., vol. 1, pp. 794, 795, pi. 41, fig. 20 (cf), 1914.— Dyar, Proc. 

 U.S. Nat. Mus., vol. 47, p. 168 (cf), May 20, 1914.— Draudt, w Seitz, Die 

 Gross-Schmetterlinge der Erde, vol. 6, p. 243, pi. 33, fig. h5 (cf), 1919.— 

 Strand, in Wagner, Lepidopterorum catalogus, par.? 26, p. 830, 1922. 



Male. — Figure 28. The name coroides can be retained to repre- 

 sent a northern subspecies. It is very similar to Rhabdatomis cora 

 cora (Dyar), differing slightly in size {see below) and in having a 

 great deal more fuscous on the hindwings. 



Length of forewing 7-8 mm. (average 7.5 mm.). 



Male genitaha entirely like that of typical subspecies illustrated 

 by figure 6. 



