Famity—EVANIID. 127 
Grenus—STEPHANUS. 
This Genus comprises a considerable number of interesting insects, in which not only various peculiarities 
of structure exist, but considerable variation occurs in some of their characters on which it has been usual, 
amongst Hymenopterous insects, to establish genera. Thus the penultimate joint of the tarsi is obliquely 
dilated in a remarkable manner, with the terminal joint set on close to the base of the preceding; in the hind 
legs the tarsi vary in the number of their joints in the opposite sexes, and this character (having been supposed to 
be a sectional instead of a sexual one) has led to the establishment of a separate genus, Megischus, for the 
females of some of the species. The veins also in the discoidal part of the wing are more or less obsolete 
in some of the smaller species, and this circumstance led Mr, F. Smith to propose the formation of another 
genus, Feenatopus, in the Journal of Proceedings of the Linnean Society (Suppl. Zool. 1860, p. 58), to which 
also the MS. name of Stenophasmus was applied by the same gentleman in the British Museum Collection. 
Tf it should be thought advisable to establish genera or subgenera in this group on account of the more or 
less obsolete character of these veins, a greater number of groups must be proposed, as each modification 
would require separation. 
STEPHANUS DAMELLICUS. (Fem.) 
Pratt XXIV, Fic. 2. 
Niger: capite et antennarum basi piceo-rufis ; pedunculo abdominis pedibusque rufis; capite antice trituber- 
culato verticeque carina parva transversa instructo, linea tenui alba utrinque sub oculos; antennis gracillimis, 
pone medium fuscis; collari trigono-truncato, collo brevi, metanoto basi serie striolarum brevissimarum notato, 
pedunculo abdomen longitudine «quanti, transversim lvissime striolato; abdomine ovali nitido, oviductu 
longitudine caput et corpus totum xquanti; pedibus posticis crassis, coxis elongatis transversim carinatis, femori- 
bus clavatis, subtus serratis dentibusque tribus majoribus armatis; tibiis pone medium subito dilatatis; tarsis 
posticis 3-articulatis (fig. 2¢) ; alis hyalinis venis distinctis nigris, stigmate nigro, basi lutescenti. © 
Long. corp. lin. 43 ; oviduct. lin. 43 ; expans. alar. antic. lin. 6}. 
Habitat; Australia (Damell). In Mus. Hopeiano Oxonie. 
The mandibles (fig. 2a, 4, c) are robust, their inner margin (seen from above) has two obtuse teeth, seen 
laterally they are more irregular. The marginal cell is slightly opened at the tip, the vein forming the hinder 
margin of the incomplete second submarginal cell is abbreviated, and the second discoidal cell is incomplete, 
the vein forming its hinder margin being obsolete. 
Oxss.—Species proxima, Stephanus hematipoda Montrouzier, Ann. Soc. Agric. Lyon. vii. 1, p. 1138. Hab. 
Woodlark Island. 
STEPHANUS NATALICUS. (Mas.) 
Pirate XXIV, Fie. 8. 
Fulvo-testaceus: capite globoso; antennis fuscis articulis duobus basalibus albidis ; abdomine segmentis 
intermediis apice nigris ; femoribus posticis versus basin fasciaque lata subapicali nigris; alis fulvescenti-hyalinis 
iridescentibus stigmate luteo, venis discoidalibus obsoletis ; femoribus posticis subtus serrulatis dentibusque tribus 
majoribus armatis, tarsis posticis maris quinque, feeminz triarticulatis. 
Long. corp. ¢ lin. 33, 2 lin 5}; oviduct. lin. 4; expans. alar. maris lin. 5, fcem. lin. 6. 
Habitat; Port Natal. In Mus. Hopeiano Oxoniz. 
In the figure of the male of this insect (fig. 8) the peduncle of the abdomen is represented too long: rela- 
tively to the abdomen by the length of one line. The head has three small transverse tubercles between the 
front of the eyes; the mandibles (fig. 8a, seen from above) are, when seen laterally, obliquely truncate at 
the tips; the maxille are minute, with two membranaceous lobes. The maxillary palpi are very long and pen- 
dulous, with the three terminal joints very long (fig. 84); the labium is somewhat heart-shaped (fig. 8c) and 
finely setose, with the front margin straight, and with a lobe on each side at the base, arising from an obconical 
mentum. The labial palpi are rather robust and four-jointed. The difference in the number of joints of the 
