186C.] 



253 



Antennae somewhat stout, very slightly longer than the wings ; the 

 basal joint strong, straight, hairy, as long as the head ; second joint 

 short, as broad as long ; the rest slightly longer, becoming thinner 

 towards the apex. 



Head broad ; eyes large ; ocelli absent ; occiput on each side with 

 a strong rounded tubercule, punctuated, divided in the middle by two 

 flattened lines placed close together, Prothorax small, divided in the 

 middle, widened externally. Mesothorax with two punctuated lines. 

 Metathorax bi-tuberculate. Abdomen with a little baton at the base of 

 the ventral surface of the penultimate segment (as in Agapetus), not 



extending beyond the seg- 

 ment. Inferior appendices of 

 the male broad, short, curved 

 upwards, spoon -shaped; be- 

 tween is the prominent penis, 

 furnished on each side with a 

 narrow plate. In the female 

 the apex of the abdomen is 

 obtuse, slightly excavated be- 

 low ; the baton on the penul- 

 timate segment shorter. Legs 

 long, stout. Anterior wings 

 long, somewhat dilated before 

 the apex; first and fourth 



'Deta.\UoiBelicopiychehorealu,'R&gen {magnified), apical Cells equal, acute ; Se- 

 cond and third shorter, narrow 

 at the base ; fifth not reaching 

 the anastomosis ; discoidal cell 

 as long as the apical cells, narrow. Posterior wings shorter, not folded 

 at the base ; neuration simple, as in Mystacides. 



The pupa-skins ( c? ? ) shew strong and acute mandibles. Larva 

 unknown. Case of the larva similar to a shell of the Molluscous genus 

 Valvata ; with a moveable operculum ; formed of concentric whorls, 

 with an eccentric fissure. Cases of this kind have been found in 

 Europe, America, and New Caledonia. See my paper in the Stett. 

 Ent. Zeit., 1864, p. 122, et. seq. 



1. — Helicopsyche horealis, Hagen. 

 Notidobia horealis, Hag. Syn. North Amer. Neurop. p. 271, 1. 

 Helicopsyche glabra, HsLg. Stett. Zeit., 1864, p. 130, 9. (Case of the larva.) 

 Brown ; eyes very large, black ; maxillary palpi long, with greyish- 



1. Anterior wing. 



2. Posterior do. 



3. Heud, pronotum, &c. 



4. Front of head, showing labial palpus, &c. 

 6. Maxillary palpus (highly magnified). 



