346 Mr. R. M‘Lachlan on new Genera 
A small but very beautiful species; the third antennal joint 
in the female is thread-like throughout its length, whereas in the 
male the apical half is gradually incrassated as in the other species 
of the genus. It is probably variable in the markings of the 
wings, perhaps independently of sex ; the example in my collec- 
tion pertains to the variety above described, but the head is 
wanting. 
Thyrsophorus speciosus, Burm. 
7’. speciosus (Klug, MSS.), Burm. Handb. ii. 782,1; 7’. Spinole, 
Ramb. Névrop. p. 318. 
Thyrsophorus pennicornis, Burm, 
T. penncornis, (Klug, MSS.), Burm. Handb. ii. 782, 2; T. ramo- 
sus, Walk. Brit. Mus. Cat. Neurop. pt. 3, p. 480, 5. 
Thyrsophorus leucotelus, Walker. 
Brit. Mus. Cat. pt. 3, p. 479, 4. 
Hagen (Stett. Ent. Zeit. 1866, p. 238) thinks this may be the 
female of T’.. speciosus. I scarcely think this possible, but should 
rather refer it to 7. pennicornis. In the latter species the two 
discoidal cells of the anterior wings are occupied by numerous 
little ramose veinlets, which are wanting in T. leucotelus; other- 
wise the two insects are very similar, but until it is proved that 
the presence or absence of these ramose veinlets is only a sexual 
character, I consider it prudent to keep them separate. 
Thyrsophorus anticus, Walker. 
Brit. Mus. Cat. pt. 3, p. 480, 6. 
This may be at once distinguished by the thorax, which is 
cornuted in front. Is this character present in both sexes ? 
NEUROSEMA, Nn. g. 
Caput modicum, postice emarginatum, supra fere planum, disci 
medio linea impressa instructo, fronte convexiuscula; la- 
brum subquadratum, emarginatum; palpi articulis cylindricis ; 
antennz alis longitudine vix eequales, (probabiliter) 9-articu- 
late, hirsute, articulis duobus basalibus parvis, 3° longis- 
simo, incurvato, reliquis gradatim paulo brevioribus; oculi 
magni, subglobosi, valde prominentes; oceHi minusculi, ap- 
proximati. Prothorax cbtectus. Mesothorax capiti latitu- 
dine equalis. Abdomen parvum. Ale antice elongate, ad 
