24 EXOTIC SAW-FLIES. 
by Dr. Klug (Jahrbuch. d. Entom.) in the appendiculated mar- 
ginal cells of the wings and the middle-spurred hind tibie. In 
these respects, the insect is a true Hylotoma, thus confirming Dr. 
Klug’s union of Schizocera with Hylotoma. 
PACHYLOTA, Westw. (Plate 7, fig. 3.) 
Corpus breve crassum, capite magno quadrato plano. Ocellus medius parvus. Antenne 
capite vix longiores 3-articulate, articulo 2ndo minuto, 3tio longo fere cylindrico. 
Clypeus transversus brevis in medio emarginatus. Labrum transversum breve, in 
medio emarginatum ciliatum; mandibule (fig. a) magne crasse apice acute, extus 
curvate intus sub apicem recte, margine acuto. Maxille et labium membranaceze 
parvee, maxillz (b in situ et 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 quadratum, 
supra dilatato-rotundatum gibbum, palpi labiales (¢ *) ad ejus angulos anticos inserti, 
brevissimi 4-articulati, articulis basalibus brevibus, 4to tamen tenui longiori. Lakium e lobis 
tribus brevissimis formatum. 
Ale antice (fig. d) cellula unica marginali apice appendiculata, 4 submarginales, ]ma brevissima, 
2nda longiori venas duas recurrentes excipiente, dtia parva, 4ta apicem ale attingente, 
ale postice cellula marginali haud appendiculata. Pedes breves crassissimi subdepressi, 
tibiis apice omnino ecalcaratis, tarsis omnibus dilatatis (e), articulis basalibus subtus loba 
minuto instructis, unguibus minutis distantibus pulvilloque transverso brevissimo. 
Obs. Characteres e feemina desumpti. 
This is one of the most anomalous forms yet described amongst 
the Tenthredinide. It is most nearly allied to Hylotoma in the 
antenne 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 equally unlike that of every known sawfly. Inthe Australian 
genus Perga we, however, met with 4-jomted maxillary palpi. . 
‘Pachylota Audouinii, Westw. P. nigro-eyanea, capite antennis prothorace pedibusque 
anticis luteis; pedibus 4 posticis nigris; ,alis fuscis, anticis! macula triangulari subcostali, 
apiceque maculaque ovata in cellula marginali posticarum pallidis ; costa stigmateque 
nigris. Long. corp. lin. 7. Expans. alar. lin. 15. 
Habitat in Africa (tropicali ?) 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. 
DICTYNNA, Westw. Plate 7, fig. 4. 
Antenne capite cum thorace breviores 9-articulate, articulo 3tio longiori, sequentibus sensim 
crassioribus ; alz antice cellula unica marginali magna, appendiculata, 4 submarginales, 
2da et 3tia venam recurrentem recipiunt. Al postice cellula marginali appendiculata. 
Corpus breve robustum. Tibie 4 posticze medio inermes. 
This genus connects Athalia 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 antennee. 
Dictynna leta W. (Plate 7, fig. 4.) Viridis nitida, abdomine subsericea ; antennis nigris ; 
pedibus: testaceis tarsorum apice (preesertim posticorum) fusco 3 alis fusco nonnihil tinctis ; 
costa stigmateque nigris. Long. corp. lin. 33. 
Habitat in Terra Van Diemenii. In. Mus. nostr. Commun. D. Lewis, M. E. S. 
The plant figured is the Australian Eucalyptus robusta, Smith. 
