ER. s 
442 MR. A. H. HALIDAY ON IAPYX, 
it as a new genus, apprehending that it might prove to be the larval form of some unde- 
termined insect. Although the first discovery of this interesting form—a link of some 
importance, perhaps, between certain families of Neuroptera—belongs to M. Lucas 
accordingly, that gentleman, with characteristic liberality, waived in my favour any 
claim he might have advanced to reserve the first publication of his discovery to himself, 
and furnished me with all the additional information he was in possession of as to its 
geographical diffusion. Japyx solifugus has occurred at Paris, ait the Garden of Plants; 
near Toulon; in Algeria; in various parts of Tuscany; in the neighbourhood of Naples, 
viz. at Sorrento, and within the precincts of the temples of Peestum, the most southern 
point to which my search for it extended. In the Roman territory I found a couple of 
specimens at the base of the pile of stones which crowns the summit of Monte San 
Gennaro (** Lucretilis "), at an elevation considerably exceeding 5000 feet above the level 
of the sea. After this preliminary notice, I proceed to give the characters of the genus. 
Class Insecta. Order Neuroptera. Stirps Thysanura. 
Fam. LEPISMID& (?). 
Genus [APYX*. 
Antenne in margine antico capitis approximate, multiarticulate, apice sensim attenuate. Maxilla 
integra, acuta, falcata, intus pectinata, laciniis 4 tenuibus, membranaceis, falcatis, acutis, intus supr 
tiliter ciliatis. Palpi labiales brevissimi, biarticulati. Prothorax segmentis duobus sequentibus 
minor. Abdominis segmenta anteriora mutica; penultimum brevissimum, subtus incompletum ; 
ultimum maximum, oblongo-quadratum, apice appendicibus duabus porrectis, mobilibus, corneis, 
subfalcatis, intus denticulatis, forcipem prehensorium fingentibus. Pedes distantes, tarso exarti- 
culato, oblongo, unguiculis 2 paribus, falcatis, acutis. 
Affinitas summa cum genere Campodea W estwoodii. 
Discrimina utriusque in schemate sequente exhibita sunt. 
Genus CAMPODEA, Westwood. 
Antenne filiformes, 
Maxilla radiis 5. 
Palpi labiales nulli. 
Genus IAPYx. 
Antenne apice sensim attenuate. 
Maxilla radiis 4. 
Palpi labiales biarticulati. 
Abdominis segmenta. anteriora mutica ; mie 
maximum, apice appendiculis 2 exarticulatis, ri- 
gidis, falcatis, intus denticulatis, abdomine n" 
brevioribus, forcipem prehensorium fingentibus. 
Abdominis segmenta anteriora subtus utrinque ap- 
pendiculata; extremum precedentibus non majus, 
apice appendiculis 2 setaceis multiarticulatis flexi- 
libus divaricatis, abdominis circiter longitudine. 
IAPYX SOLIFUGUS. 
About 5 lines in length; ivory-white, semitransparent; the head, prothorax, and limbs 
paler; the terminal segments of the abdomen with the forceps chestnut; usually the 
dark contents of the ventricle produce the appearance of a broad longitudinal band down 
the back from the metathorax to the antepenultimate segment. The insect altogether 
à "Idrv£, poetical name for Calabrian; applied here in allusion to the posterior appendages; as if it were "o 
derived from the obsolete pronoun is for aris, and ruy, as idayeveis for abOvyeveis. | 
