Famity—SIRICID. 117 
medium ale nigricantibus ; segmento ultimo abdominis in spmam acutam brevem lateribus serratis producto, (in 
individuo delineato, genitalia maris exserta sunt, et in figura apparent). ° 
Long. corp. lin. 12; expans. alar. antic. lin. 193. 
Habitat ; America Septentrionalis (E. Doubleday). In Mus. Hopeiano Oxonie. 
TREMEX RUGICOLLIS. 
Puate XX, Fie. 9, 
Capite et thorace eneis, punctato-rugosis, metanoti parte postica fulva linea nigra media; abdomine pur- 
pureo-chalybxo lateribusque segmentorum quinque basalium fulvis ; alis fuscis chalybeo nitidis; antennis nigris 
20-articulatis, pedibus 4 anticis albidis tarsorum articulis 4 apicalibus nigris; pedibus 2 posticis nigris latis, 
femoribus fulvis. (Mas.) 
Long. corp. lin. 8; expans. alar. antic. lin. 18. 
Habitat; Insule Philippinenses (Digallorin prope Luzon, dieb. 18 et 20 Jun. 1860, D. Semper). In 
Mus. Semper. 
Head and prothorax zeneous black ; head convex, with small but deep punctures; collar rugose, with small 
conical tubercles; on the mesothorax these tubercles are fine. The metathorax is brownish black, smooth, the 
hind part with a luteous band divided by a brown central longitudinal line; the abdominal segments are rich 
purple, chalybeous on the hind margin, very slightly punctured except the terminal joints, which are rugose ; 
the basal segments have a luteous spot on each side, extending nearly the whole length of each joint. The four 
fore legs are luteous, the tip of the first and the remaining joints of the tarsi pitchy brown; the two hind legs 
are black, compressed, the femora fulvous, the basal joint of the tarsus broad. The wings are rich brown, with the 
veins darker brown, strongly glossed with pinkish purple; the body beneath is black, with the thoracic portions 
eneous. The antenne are as long as the head and anterior half of the metathorax: they are 20-jointed, and the 
first jot is pitchy, the second and third steel-green, polished, the fourth and following dark purplish-black, 
and compressed. The length of the fore wing equals that from the front of the head to the middle of the 
fifth seement of the abdomen. 
This insect is nearly related to several other species of the genus from the Eastern Islands, of which the 
following are the characters :— 
TREMEX INSIGNIS. 
Smith, Proc. Linn. Soe. iit p. 178.) 
i 
Nigro-purpureus ; abdominis fasciis basalibus albis ; alis nigris, cupreo nitentibus. 
Long. corp. (oviductu exelus.) 9-11 lin. ; expans. alar, antic, lin. 18}. 
Habitat ; Aru (Wallace). In Mus. W. W. Saunders. 
Obscure steel blue, with shades of green, purple and violet; antenne 16-jointed; the head and thorax 
punctured; the prothorax with an oblique, smooth, shining space on each side. Wings very dark brown, 
with a brilliant coppery effulgence. The base of the abdomen opaque, velvety, purple-black ; the first segment 
with a narrow, transverse, cream-coloured fascia in the middle, the second very narrowly whitish at its base ; 
the rest of the abdomen is highly polished, and has a scattered, short, black pubescence. The terminal seg- 
ment of the abdomen is conical, acute at the tip, with the sides serrated. 
Closely resembles Zr. purpureipennis Westw., having, like it, 16-jointed antenne. 
TREMEX PURPUREIPENNIS. 
Niger, purpureo et ceruleo tinctus: capite collare et mesonoto punctatis, parte postica thoracis opaco levi, 
nigro, punctis tribus albis; abdomine nitidissimo levi, segmento basali parum neo tincto, apicali purpureo 
tincto ; antennis 16-articulatis articulis apicalibus compressis; pedibus anticis cwruleo-nigris; alis nigris pur- 
pureo nitidissimis ; mandibulis extus hirsutissimis; segmento ultimo abdominis supra depressione magna ovali 
punctata, apice conico acutissimo, tuberculo parvo utrinque instructo. 
Long. corp. lin. 13 ; expans. alar. antic. lin. 23. 
Habitat; Malacca (Lorquin). In Mus. Jard. des Plantes, Paris (olim Coll. Sichel). 
