48 Rev. L. Guilding on the Generic Characters 



emarginato. Palpi labiates articulis tribus, ultimo cylindrico 

 vel fusiformi. Larva araneidiformis, praedam puteolo vel fraude 



captans ; mandibulis &c tubulosis, perforatis ad succos hau- 



riendos ; os nullum ; abdomen lateribus pectinatis, vel fascicu- 

 latis. Nympha dum nocte declaratur acetabulum elongatum 

 emittens, &c. 



In the larvae of those genera of the family which dig pitfalls, 

 we observe long and slender antennula, which are held erect, 

 and are doubtless useful in indicating the approach of their 

 prey by the falling of the sand : in the larvae of Ascalaphi they 

 are wanting or obscure. 



INSECTA NEUROPTERA. 



Fam. Myrmeleonid;e. Guild. Myrmeleonides. Lat. 



Genus Formicaleo. Geoff., Leach. Myrmeleon Auctorum. 



Character Genericus. 



Antenna gradatim extrorsiim crassiores, subarcuatae, thoracis 



longitudine, articulis minutis transversis : acumine termi- 



nali minimo. 

 Palpi sex : labiales mult6 longiores : articulo ultimo incrassato, 



fusiformi. 

 Oculi indivisi, prominuli. 

 Abdomen longum, lineare. 

 Corpus villosulum. 

 AlcE elongatae, subaequales (quiescentis) deflexae. Stigma indi- 



stinctum, vel evanidum. Neura post-costalis medio biradiata. 

 Tibia ciliatae. Calcaria duo : tarsi pentameri : unguiculi sim- 



plices. 



Ovum 



Larva obesa, caoite magno solido cordiformi : latera abdomi- 



nalia 



