of the Pyralidina of the European fauna. 465 



44. Hydrocampa, Latr. 



Face rounded, vertical ; ocelli distinct ; tongue developed. An- 

 tennae two-thirds, in 3' filiform, towards apex with angularly pro- 

 jecting joints, ciliated (f ). Lahial palpi moderate, ascending, second 

 joint with short or moderately long rough projecting scales beneath, 

 terminal joint moderate, pointed or obtuse. Maxillary palpi 

 moderate, subascending, loosely scaled, somewhat pointed. Abdo- 

 men in 3' with moderate anal tuft. Posterior tibiae with outer 

 spurs three-fourths of inner. Fore wings with vein 7 from near 9, 

 8 and 9 stalked, 10 closely approximated to 9 near base. Hind 

 wings somewhat over 1 ; veins 3, 4, 5 closely approximated at base, 

 7 out of 6 near origin, anastomosing with 8 to one-third. 



A small European genus ; it would seem probable 

 that it originates from the neighbourhood of Metasia, 

 but the exact connection is not distinctly traceable. The 

 aquatic habits of this and the following genera are 

 doubtless mainly responsible for their difference in super- 

 ficial appearance from the rest of the family. Lederer, 

 by an unaccountable error, states vein 10 of the fore 

 wings to rise out of 9, whereas it is by the separation of 

 these veins that the genus is distinguished from the 

 following. 



arundinal'is, Ev. 



nymphceata, L. 



rivulalis, Dup. 



45. Nymphula, Schrk. 



Face roiTnded, vertical ; ocelli distinct ; tongue developed. An- 

 tennae two-thirds, in 3 filiform or with angularly projecting scales 

 at joints, ciliated {^ — f). Labial palpi moderate, arched, ascending, 

 second joint with short or moderate projecting scales beneath, 

 terminal joint moderate, obtuse or tolerably pointed. Maxillary 

 palpi moderate or rather short, porrected, apex with loose peni- 

 cillate scales. Abdomen in 3 with moderate anal tuft. Posterior 

 tibiaB with outer spurs one-half inner. Fore wings with vein 7 

 from near 8, 9 and 10 out of 8. Hind wings 1 ; veins 3, 4, 5 

 approximated at base, or 4 and 5 from a point, 7 out of 6 near 

 origin, anastomosing with 8 to one-half to three-fourths. 



A development from Hydrocampa. It is an Indo- 

 Malayan genus of some extent, but some straggling 

 forms of it seem to occur in all the principal regions. 



2 I 2 



