2. 

 VELIA lUVULORUM. 



OnoKii Hcmiplcra. Fa.ai. Hydronietidic Leach. 



Type of the Genus Gcrris currens Fah. 



Velia Ldt. Genis Fab. Hydrometra Fab. 



Ant'jnncc exserted, filiform, composed of 4 joints, the first of wliicli 



is the longest, the last cylindric-oval. (1. a ) 



Head somewhat vertical. (1 . b.) 



Rostrum 2-jointed. (2. b.) inflected. 



Labrum very short, not projecting. (2. a.) 



Setcc (probably 4) passing through the Rostrum. (2. c.) 

 Feet long, formed for walking upon the water, first pair raplurious, 

 tarsi 3-joinled, with very minute nails inserted laterally into a fissure 

 near the extremity of the last joint. (3.) 



V. RivuLORUM Lat. Cons. Gen. 



Gevris rivulorum Fab. Ent. Syst. v. 4. p. 189. 



Fuscous ; head black, thorax deeply punctured, with two gray 

 spots in front, and an orange mark "between them ; sides of the 

 thorax and abdomen red with a black spot on the elevated edge 

 of each segment, and a line of contiguous black .^pots down each 

 side beneath ; the anal segments in the abdomen of the male 

 black : Elytron with one long and 3 round white spots — second 

 pair of legs with the tibiae ciliated 5 posterior thighs of tlie males 

 bidentated, the body flattened, with a small anal joint projecting. 

 Female witli simple thighs, and a robust truncated abdomen. 



In the Cabinets of Mr. Dale and the Author. 



This pretty insect was unknown I believe as an inhabitant of 

 this country till it was taken by Dr. Leach. My iriend 

 J. C. Dale, Esq., has since met with it in considerable abun- 

 dance on his estate at Glanville's Wootton, Dorset ; Mr. 

 Samouclle lias also taken it near Kew Hridjie. It is found 



