24 
EXOTIC SAW-FLIES. 
by Dr. Klug (Jahrbuch. d. Entom.) in the appendiculated mar¬ 
ginal cells of the wings and the middle-spurred hind tibiae. In 
these respects, the insect is a true Hvlotoma, thus confirming Dr. 
Klug’s union of Schizocera with Hylotoma. 
PACHYLOTA, Westw. (Plate 7, fig. 3.) 
Corpus breve crassum, capite magno quadrate piano. Ocellus raedius parvus. Antcnn® 
capite vix longiores 3-articulaUe, articulo 2ndo minuto, 3tio longo fere cylindrico. 
Clvpeus transversus brevis in medio emarginatus. Labrnm transversum breve, in 
medio emarginatmn ciliatum; mandibula (fig. a) magnas crass® apico acuta, extus 
curvatse intus sub apicem recta?, margiuo acuto. Maxill® ct labium membranaceae 
parvse, maxilla? (b in situ ct b *) lobo apicali magno tenui apice dilatato et reflexo, lobo 
interno minuto attenuato. Palpi maxillares breves 4-articulati, articulo lmo minuto 
intus appendiculo triangulari instructo ; 4to magno ovato. Mentum (c) basi quadratttm, 
supra, dilatato-rotundatum gibbum, palpi labiales (c*) ad ejus angulos anticos inserti, 
brevissimi 4-articulati,articulisbasalibu3brevibus,4totamen tenui longiori. Labium e lobis 
tribus brevissimis formaturo. 
Aim antic® (fig. d) cellula unica marginali apice appendicnlata, 4 submarginales, lma brevissima, 
2nda lougiori venas duas recurrentes excipiente, 3tia parva, 4ta apicem alee attingente, 
alse posticce cellula marginali hand nppcndiculata. Pedes breves cras3issimi subdepressi, 
tibiis apice omnino ecalcaratis, tarsis omnibus dilatatis (e), articulis basalibus subtus lobo 
minuto instructs, unguibus minutis distantibus pulvilloquc transverso brevissimo. 
Obs. Cbaracteres e feemina desumpti. 
This is one of the most anomalous forms yet described amongst 
the Tenthredinidm. It is most nearly allied to Hylotoma in the 
antennae and wings ; but differs from that as well as from every yet 
known species in the family, in the remarkable structure of the 
dilated feet destitute of tibial spurs. The structure of the mouth 
is also equalty unlike that of every known sawfly. In the Australian 
genus Perga we, however, met with 4-jointed maxillary palpi. 
Pachylota Audouinii , Westw. P. nigro-cyanea, capite antennis prothorace pedibusque 
anticis luteis; pedibus 4 posticis nigris; t alis fuscis, anticis- macula triangulari subcostali, 
apieeque maculaque ovata in cellula marginali posticarum pallidis; costa stigmateque 
nigris. Long. corp. lin. 7. Expans. alar. lin. 15. 
Habitat in Africa (tropicali 2) In Mus. nostr. 
I have great pleasure in dedicating this most interesting insect 
to my friend Professor Audouin, by whose kindness I received it 
from the Jardin des Plantes. 
HICTYNNA, Westw. Plate 7, fig. 4. 
Antennae capite cum tborace breviores 9-articulata, articulo 3tio longiori, sequentibus sensim 
crassioribus ; al® anticae cellula unica marginali magna, appendiculata, 4 submarginales, 
2da et 3tia venam recurrentem recipiunt. Alae postic® cellula marginali appendiculata. 
Corpus breve robustum. Tibia? 4 posticae medio inermes. 
This genus connects Atlialia with Hylotoma. The species figured 
is, in fact, an Athalia with the wings of Hylotoma. Its beautiful 
colour is met with in no other species of the great section of the 
family which have multi-articulate antennae. 
Dictynna lata W. (Plate 7, fig. 4.) Viridis nitida, abdomine subsericea; antennis nigris; 
pedibus testaceis tarsorum apice (prsesertim posticorum) fusco ; alis fusco nonnihiltinctis; 
costa stigmateque nigris. Long. corp. lin. 3J. 
Habitat in Terra Van Diemenii. In. Mus. nostr. Commun. D. Lewis, M. E. S. 
The plant figured is the Australian Eucalyptus robusta, Smith. 
