56 PROCEEDINGS OF THE NATIONAL MUSEUM vol. ii5 



Distribution and material studied. — This species is known 

 solely from the holotype and paratype listed above. 

 Remarks. — Species named for Mr. Frederick Knab. 



Rhabdatomis extensa, new species 



Figures 8, 25 



Male. — Figiu-e 25. Head and thorax as in R. laudamia. Abdomen 

 entirely straw yellow Avith few fuscous scales covering apices of harpes. 

 Forewing above and below entu-ely like B. laudamia. Hindwing on 

 both surfaces with basal area and entne costal margin yellow, even 

 at apex (especially noticeable on undersm-face). In laudamia only 

 the basal half of costal margin is yellow. Apex of hindwing (except 

 for costal margin) fuscous as in laudamia. 



Length of forewing 9-10 mm. 



Male genitalia as characterized in key and as illustrated b}" figure 

 25. This is the only species in the genus mth a beaklike apical lobe 

 on the costa of the harpe, with an aedeagus that is distinctly flattened 

 dorsoventrally, and with a uniquely shaped juxta. 



Female. — Unknown. 



Type locality. — Yuntas (near Cali), Department of Valle del 

 Cauca, Colombia. 



Additional type data. — Described from holotype, male (USNM 

 type 34848; d^ genitalia slide WDF 1554), from one paratype, male 

 (Esperanza, Guanacaste, Costa Rica; May; cT genitalia slide WDF 

 1556), and second paratype, male (Cayuga, Izabal, Guatemala; April; 

 Schaus and Barnes, collectors; genitalia slide WDF 1555). 



Location of type. — United States National Museum. 



Distribution and material studied. — Guatemala, Costa Rica, 

 and Colombia. This species is known solely from the holotype and 

 paratypes. 



Rhabdatomis cora (Dyar), new combination 



Figures 6, 26, 27 



Diarhabdosia cora Dj'ar, Journ. N.Y. Ent. Soc, vol. 15, p. 227, December 1907. — 

 Hampson, Catalogue of the Lepidoptera Phalaenae in the British Museum, 

 suppl., vol. 1, p. 794, pi. 41, fig. 19 ( cf ), 1914.— Draudt, in Seitz, Die Gross- 

 Schmetterlinge der Erde, vol. 6, p. 243, pi. 33, fig. g8 (cT), 1919.— Strand, 

 in Wagner, Lepidopterorum catalogus, pars 26, p. 836, 1922. 



Male. — Figure 26. Head yellow above with palpi and frons fus- 

 cous. Thorax yellow, tinged with pink. Antenna annulate. Abdo- 

 men entirely straw yellow. Forewing above and below very similar 

 to R. laudamia except that fuscous-colored fasciae have more lilaceous 

 cast. Hindwuig straw yellow with outer border fuscous, this color 

 broken in middle by straw yellow ground color. 



