WASP-GENUS PARALASTOR. 587 
the similar forms described by Saussure by its 12-jointed (not 
11-jointed) antenne. 
Hab. Tasmania, Mt. Wellington and Eaglehawk Neck, Jan., 
Feb., and March, 1913 (Turner); Hobart; Mt. Kosciusko, 
6000 ft., N.S.W. (Waterhouse). 
28. PARALASTOR OPTABILIS*, sp.n. (PI. I. fig. 12.) 
Picturatio capitis, thoracis et abdominis, cum P. fratris et 
P. leti picturatione congruens. Species robusta, alis infuseatis. 
Clypeus 9 medius niger. Clypeus distincte dentato-emarginatus, 
margine apical inter dentes laterales medio leviter rotundato, sive 
paullo producto, quasi tridentato. Caput cum thorace sat dense 
pilis longis vestitum. Anguli pronotales parum distincti. Meso- 
notum tomentosum, punctis sepe plus minus tomento obscuratis, 
postice haud dense (sc. irregulariter) punctatum, postscutello 
rotundato, imermi. Abdominis segmenta 2 basalia tomento 
nigerrima, puncturatione spe plus minus abdita, sive obscurata ; 
primum fortissime transversum, secundum pilis erectis crebre 
ubique vestitum; fascize abdominales minus late, fere recte. 
Abdominis segmentum 2 ventrale fortiter abrupte post suleum 
elevatum, elevatione summa prominente; segmentum ventrale 
3 apicale, eque ac precedentia, perconspicue et dense pilis 
erectis vestitum. Antenne g 12-articulate. Tibi tarsique 
rufescentes aut testacei, plus minusve (presertim in ¢ ) flavo- 
notati. Femora anteriora et imtermedia ¢ flavo-notata, his 
in © etiam flavo-notatis. Long. 12(¢ )-14(2) mm. 
Hab. North Queensland (Dodd). 
29. PARALASTOR VULPINUS Sauss. 
In its typical form this species is distinct to the naked eye by 
its narrow first abdominal fascia, which, like the second. is pale 
yellow posteriorly and orange- _brown or brown in front, and its 
robust form—the latter ehenacien distinguishing it from other 
species which have similarly bicolorous fasciz. The first abdominal 
band becomes narrower towards the sides. 
Other specimens often show little or no trace of the bicoloration 
of the fascie, which are often orange; the first is then excised 
or emarginate in the middle, so that it is notably widened on 
either side. This form may, with larger and better material, 
prove to be distinct; but I can see no satisfactory structural 
difference. It may be known as P. vulpinus st. excisus, n. 
The well-clothed second dorsal segment of the abdomen, in well- 
preserved examples, is characteristic of both forms. The apical 
ventral segment of the male, if fully exserted, bears at its base a 
remarkable tuft of dense erect hairs, but these may be withdiawn 
beneath the sixth segment. Similar tufts oceur in P. simulator, 
which is evidently allied to vulpinus. The antenne of the male 
are 11]-jointed. 
* This species should be placed next to P. awreocinctus and atripennis, as in the 
table. 
Proc. Zoou. Soc.—1914, No. XLI. A] 
