On Ileterocera from Costa Rica. 189 



24. Caluromys philander, L. 



One. 



More or less intermediate between C. philander and 

 C. trimtatis, whose relations to each other are at present 

 difficult to make out, owing to the puzzling amount of 

 variability in the size of their skulls. 



25. Marmosa chloe, Thos. 

 Three. 



XIX. — Descriptions of new Heterocera from Costa Rica. 

 By W. Schaus, F.Z.S. 



Syntomidae. 

 Dasysphinx volatilis, sp. n. 



Body black ; two large white spots on collar ; paired 

 white spots dorsally on abdomen, and a sublateral row of 

 white spots. Legs with a white spot at joint of tibia and 

 tarsi, the latter streaked with white. Wings hyaline ; veins 

 and fringe black. Fore wings : broad terminal whitish 

 streaks between the veins ; basal half tinged with reddish 

 orange, darkest on costa, inner margin, and base above sub- 

 median ; the discocellular inwardly shaded with black. 

 Hind wings: a black point at angle of discocellular; the 

 inner margin broadly black. 



Expanse 40 mm. 



Hab. Volcano Poas ; June. 



Episcepsis vinasia } sp. n. 



Palpi and legs fuscous black streaked with grey. Frons 

 blackish grey ; head posteriorly ochreous. Collar and thorax 

 fuscous black, the former edged in front with ochreous, and 

 with a sublateral ochreous spot. Abdomen metallic blue 

 above, with dorsal fuscous-black hairs; underneath white • 

 fore coxae ochreous. Primaries fuscous black, the veins 

 greyish. Secondaries deep bluish black; a broad white 

 streak from base in and below cell ; a white streak along 

 inner margin in male partly concealed by buff tufts. 



Expanse H2 mm. 



Hab. Juan Vinas, Sixola River. 



