ANNULOSA JAVANICA. 47 
Thorax lateribus sexdentatis, dorso subcarinato, fossula utrinque longitudinali anticé posticéque 
profundiore. Elytra pallidiora punctorum seriebus striata. Corpus fuscum pedibus fuscis. 
Oss. The Dermestes sexdentatus of Fabricius, which is the same with his Colydiwm frumen- 
tarium and the Ips frumentaria of Olivier, but which appears different from the Corticaria fru- 
mentaria of the Entomologia Britannica, comes so very near to our species that I have little doubt 
of its food being analogous. It probably infests rice, as other species of the genus are found in 
moist sugar. . 
Genus TRIBOLIUM, Nobis. Cozyprum Herbst. 
Antenne undecim-articulate, sub clypeo ad mandibularum basin insert, articulis basil- 
aribus octo globosis sub-zqualibus, apicem versus vix crassioribus, tribus ultimis clavam 
laxam efformantibus; articulis nono et decimo subpateriformibus, ultimo transverso ovali. 
Os sub clypeo plano transverso ad latera rotundato absconditum. 
Oculi clypeo fere cincti. Thorax transverso-quadratus submarginatus. Corpus depressius- 
culum sublineare. Tarsi articulis quinque. 
Oxs. This genus appears closely allied to Colydium and also to have some sort of relation to 
Colohicus. From the latter it differs in the antenn and form of body; from the former in the 
form of head and in being pentamerous. J am indeed inclined to think that the Colydiwm rufum 
of Latreille (Gen. Insect. et Crust. Vol. 3. p. 21.) belongs to this genus, if it be not identical with 
our species; but the description of the Colydium rufum by this entomologist is too vague to 
admit of certainty on the subject. 
As the specimen is unique in the collection of the East-India Company, I have been under the 
necessity of contenting myself with a generic description founded on external characters alone. 
Herbst has very justly remarked the strong connexion which exists between this genus and 
Dermestes, and there is indeed no doubt of its belonging to the stirps of Necrophaga, as its larva 
scarcely differs from that of Dermestes except in not being so hirsute. 
92. Casraneum. T. ferrugineum, capite thoraceque subtilissimé punctatis, elytris punctato-striatis. 
Colydium castaneum Herbst. 7. 282. tab. 112. fig. 13. E. 
An Colydium rufum, Lat. Gen. Ins. et'Crust.-vol.iii. p. 21? 
An Colydium rufum, Fab. Syst. Eleuth. 2. 557.11 ? 
Trogosita ferruginea, Fab. Syst. Eleuth. 1. 155. 23. 
Ips testacea, Fab. Ent. Syst. Suppl. 179. 14? 
Synonymia Trogosite,ferruginee apud Fabricium corrigenda, antennarum enim clava in Lycto naval? 
Ent. Syst. 1. 2. 504. 10, est biarticulata. 
Long. corp. ¢.- 
Clypeus ante oculos depressus angulis truncatis. Antenne apice pallidiores. Thorax fossula utrinque 
ad marginem posticum impressa. Elytra seriebus punctorum inter strias duabus obscuré impressa. 
Corpus subtus obscuro-piceum pedibus rufis. 
Oss. This insect is by Fabricius stated to be most destructive to rice, that is if it be the 
Ips testacea of the Supplement, but of this I have great doubts, as the description is so loose and 
vague that it might suit a Sylvanus. I haye, however, found the Tribolium rufum alive among 
insects from India, and according to Herbst it is very destructive in such situations, he having 
received 
