XXXI. 
LIST OF LEPIDOPTERA OBSERVED IN THE NEIGHBOURHOOD 
OF HITCHIN AND AT KNEB WORTH, HERTS. 
Hy John Hartley Durrant, E.E.S. 
(Communicated by A. F. Griffith, M.A.) 
Bead at Watford , 2ktli March , 1885. 
The Lepidoptera enumerated in the first of the two following 
lists have been collected at Hitchin, and at Hitch Wood, Ickleford, 
Norton (near Ealdock), Offley, Pegsdon, St. Ippolyts, and Tingley 
Wood, in the vicinity of Hitchin; and those in the second at 
Knebworth. Taken roughly, all my collecting has been done on 
the Chalk, or on the Eoulder-clay or Drift overlying it. I record 
419 species, of which 106 are not included in Mr. Griffith’s list, 1 * 1 
consequently raising the County list from 514 to 620. I am 
greatly indebted to Mr. W. Hill, jun., for species taken at Hitchin 
and Knebworth, and for assistance in compiling this list. 
Lepidoptera observed in the Neighbourhood of Hitchin. 
Pieris 
RHOPALOCERA. 
DlUR.NI. 
Vanessa 
Thecla 
brassicae 
urticae 
quercus 
rapae 
polychloros 
Polyommatus 
napi 
Io 
Phlaeas 
Anthocharis 
Atalanta 
Lycaena 
cardamines 
cardui 
Agestis 
Gonepteryx 
Satyrus 
Alexis 
rhamni 
Megaera 
Alsus 
Colias 
Janira 
Thanaos 
Ednsa 
Tithonus 
Tages 
Hyale 
Hyperanthus 
Hesperia 
Argynnis 
Chortobius 
Sylvanus 
Paphia 
Pamphilus 
linea 
Euphrosyne 
HETEROCERA. 
Smerinthus 
Nocturni. 
Sesia 
Procris 
ocellatus 
tipuliformis 
Geryon 
populi 
formiciformis 
Zygaena 
tilise 
bembeciformis 
trifolii 
Acherontia 
Zeuzera 
nlipendulae 
Atropos 
aesculi 
Nola 
Sphinx 
Cossus 
cucullatella 
convolvuli 
ligniperda 
Lithosia 
ligustri 
Hepialus 
complanula 
Chserocampa 
hectus 
griseola 
porcellus 
lupulinus 
Eucbelia 
Elpenor 
sylvinus 
jacobaeae 
Macroglossa 
Velleda 
Callimorpha 
stellatarum 
humuli 
dominula f 
* See p. 58. f One specimen, in 1872. 
