74 Mr. H. W. Bates on Coleoptera 



2 . Palpi maxillares elongati articiilo apicali subovato. Venter valde 

 convexas politus, sparse fulvo-pilosus et punctatus. Antennae clava parva 

 4 lamellata, lamella prima (articulo 7o) breviori articulis 5 et 6 intus brevis- 

 sime productis. Long. 12 — 17 millim. 



Ta-tsien-lu. 



Evidently closely allied to T. inconstans (Fairm., Ann. Soc. 

 Ent. Fr. 1878, p. 103, pi. 3, fig. 1), and differing chiefly in size, 

 sculpture, and the brilliant metallic colouring of the abdomen, 

 which remains in examples that have been a long time in 

 alcohol. T. inconstans is said by M. Fairmaire to be of an azure 

 blue in life, of which colour nothing remains in the dried speci- 

 mens but faint spots on the pygidium and abdomen. The genus 

 is allied to Rhizotrogus and Brahmina. 



HiLYOTROGUS LONGICLAVIS, n. Sp. 

 Bhizotrogo cestivo (Oliv.) subsimilis; sat gracile oblongus, rufo-testaceus, 

 elytris leviter pruinosis et iridescentibus. Long. 15 — 16 millim. 



Sze-chuen. 



According to the description resembles H. unguicularis (Fairm.), and, 

 except in colour, H. iridi])e7inis of the same author ; but the structure of 

 the antennae differs a little, although not sufficiently to remove the species 

 from the genus Hilyotrogus (Fairm.), of which a club of five lamellae forms 

 one of the chief generic characters. The antenna; in H. longiclavis is 10- 

 jointed, and the 5-jointed club is long and slender (equalling in length joints 

 1 — 5)^ the two mner joints just perceptibly shorter than the other three ; but 

 the 5tli joint of the stem is also prolonged into a leaflet about one-third the 

 length of the club, and the 4th also is acutely pointed on its inner side. 

 Fairmahe describes the 4th and 5th joints as angular on the inner side. The 

 scape is rather short, and joints 2 — 5 shorter and nearly of equal length. 

 The terminal joint of the maxillary palpi is slenderly ovate and truncated at 

 the apex. The head is short and broad, and rather densely and equally 

 punctured ; the clypeus short, strongly rounded on the sides, with reflexed 

 margins, subtruncated in front ; the frontal suture very deep and nearly 

 strai^fht. The thorax is as broad as the elytra at the base, with obtuse hind 

 angles and crenulated lateral margins, evenly and separately pimctured. The 

 elytra have a sutural and four discoidal striae, with three corresponding 

 broad scarcely elevated costae, whicli are nearly smooth, the rest of the 

 surface being rather closely punctured and subcoriaceous. The pygidiiim is 

 triangular, elongated, rugulose-punctate. The ventral sutm'es are visible, 

 but soldered. The numerous examples appear to be all of the same sex, as 

 no difference is observable in the apical ventral segments, 



Lachnosterna ochrogaster, n. sp. 



Obion fa robusta, supra nigra griseo-pruinosa, opaca, subtus cum 

 antennis pedibusque nitida rvifo-picea, abdomine toto testaceo-flavo. Ungui- 

 culi dente infra medium valido, basi dente minuto acuto. Long. 23 — • 

 25 millim. 



Sze-chuen. 



A large, oblong, robust species ; elytra somewhat dilated posteriorly. The 

 head small, closely punctured, the mandibles visible in repose ; clypeus 

 sinuated in the middle, rounded on the sides, margin reflexed. Thorax 

 narrower than the elytra, hind angles approaching a right angle, front 

 margin rather strongly arcuated, lateral prominently rounded, crenated 

 anteriorly ; surface covered with shallow umbilicated punctures, widely 



