IROPODS Ob' NORTH AMERICA. 



267 



times shorter and a little narrower than the outer branch, and is lami- 

 nar in shape; the outer branch is sickle-shaped, rather acute, and 

 lightly flexuous. 



FIG. 278. IRONA NANA (AFTER SCHICEDTE AND MEINEKT). a, ADULT FEMALE, b, YOUNG MALE. 

 c, YOUNG OF THE SECOND STAGE, d, UNGULA OF THE LEG OF THE THIRD PAIR OF SAME. (ALL 



ENLARGED.) 



Length, 8-18 mm. 



Color yellow, with large or small dark, branching spots, arranged 

 in transverse series, scattered over the middle of the body; the eyes 

 are black." 



The above description is adapted from the following one of Schiredte and Meinert's: 



Subovata vel producte obovata, valde contorta, convexiuscula, plus sesqui vel 

 duplo longior quam latior (5 : 3 vel 2:1). 



Caput parvum, subtrigonum vel subconicum, quam annulus quartus trunci ter 

 vel quarter angustius (3:1 vel 4:1), multo latius quam longius (5:4), profunde 

 immersum, fronte declivi, breviter rotundata. Oculi magni, subpentagoni. Antennae 

 primi paris compressiusculee, crassiusculee, late distantes, angulum priorem annuli 

 primi trunci articulo quinto attingentes, antennas secundi paris vix complentes; 

 8-articulatse. 



Antennae secundi paris subfiliformes, quam antennae primi paris duplo tenuiores 

 angulum priorem annuli primi trunci articulo sexto fere attingentes; 9-articulatse. 

 Margo anticus annuli primi trunci latissime sinuatus, angulis prominulis, rotundate 

 angustatis, obtusiusculis; latera annuli non constricta, late rotundata. 



Anguli postici annulorum priorum trunci latissime rotundati, posteriorum subro- 

 tundati. 



Epimera in aequum fere porrecta; terna priora longiuscula, angustiuscula, post 

 breviter rotundata; terna posteriora breviuscula vel brevia, latiuscula vel lata, per 

 paria sensim latitudine crescentia, post truncata vel rotundate truncata. Epimera 

 terna priora angulum annuli spatio majore vel minore, per paria sensim longitudine 

 decrescente, non attingentia; terna posteriora angulum annuli fere explentia. Pedes 

 breviusculi, per paria sensim longitudine crescentes; parium trium priorum con- 

 junctim valde divergentes; parium quattuor posteriorum conjunctim vix convergentes, 

 in latere altero incurvi. Ungulse longiusculse vel longse, crassiusculse vel crassse, 



