WASP-GENUS PARALASTOR. 593 
tegule in both sexes have a close minute puncturation on their 
outer portion. The amount of black on the clypeus of the female 
varies and probably may be altogether absent, while in some 
the orange colour is reduced to a wide curved or horseshoe- 
shaped mark. ‘The single male has only a small black spot near 
the apex. 
Hab. Queensland, Brisbane (Hacker), 4 92 taken singly in 
JanweetebreMarchy and. April, 9 Hou other 9 and 1 ¢ 
examined. 
39. PARALASTOR ARGENTIFRONS Sunith. 
This species structurally seems to be almost identical with 
P. eriurgus and is perhaps only a southern race of the Queensland 
form, but is very different in superficial appearance. It varies 
greatly in the width of the abdominal fasciz of the first two 
segments. Of the 13 examples before me I do not think that 
there are even two that are alike in the pattern of coloration of 
the second dorsal segment. One example, in which the black 
forms an equilateral basal triangle, bears a MS. label, ‘“ saucius 
Sauss. Type.” The clypeus in the single male bears a black median 
apical spot, in the female it may be all black or marked at the 
base ; it also varies in puncturation, and in some examples is quite 
dull, in others more shining. ‘The pronotal spots may be absent. 
In some examples the upper edge of the truncation of the second 
ventral segment is less pointed in the middle (as in the type) than 
in others, but I have examples taken in company which differ in 
this respect, but not otherwise. The silvery pubescence of the 
sides of the clypeus and adjoining orbits is more distinct and 
conspicuous 1n some than in others. The male characters are as 
in P. eriurgus. 
Hab. Adelaide (my collection), 3 9, 19 & 1 3 (Oxford 
Museum); 8. Australia, 1 @ (Oxford Mus.) and 1 @ (British 
Museum); Victoria (/rench), 4 2; 2 9 without special locality. 
40, PARALASTOR SUBOBSCURUS, Sp. n. 
3. Niger, clypeo flavo, medio nigro-punctato, macula elongata 
interantennali maculaque parva verticis postoculari,  flavis. 
Macule pronotales, mesopleurales, et scutellares aurantiace, 
Tegule aurantiaco-marginate. Abdominis segmenta 2 basalia 
postice rufo-marginata (vix aurantiaca) fasciis fere rectis, minus 
latis. Tibiee tarsique ferruginei aut rufescentes. Ale infuscatee, 
parte costali saturatiore. 
Species villosa, P. eriwrgo et argentifronte angustior. Clypeus 
fortiter emarginatus, nitidus, remote punctatus, minus pubescens. 
Frons rugoso-punctata. Pronoti truncatio haud evidenter mar- 
ginata, angulis tamen lateralibus distinctis. Mesonotum grosse 
punctatum, punctis distinctis, minus confluentibus. Postscutellum 
inerme. Propodeum distincte punctatum, Abdominis segmentum 
primum subequaliter punctatum, pilis longis vestitum ; secundum 
