10 ANNULOSA JAVANICA. 



separating Ctenostoma from the long-necked Cicindelidcz, as the first does; or of placing 

 Ctenostoma near Iterates, as in the second. It is a curious proof of the value of the table given 

 in Horse Entomologies, pt. 1. p. 4, that an arrangement may thus be found, which will keep 

 together the insects of a similar formation of palpi, and which may nevertheless not be grounded 

 on the consideration of these organs. 



The voracious insects which compose this family are all extremely active in their perfect state, 

 and inhabit sandy districts, as it is in the sand that the artful and wary larvae dig cylindrical pit- 

 falls for their prey. 



I shall now proceed to the description of such species of this most natural family as Dr. 

 Horsfield collected in Java. They all belong to the three genera Colliuris, Therates, and Ci- 

 cindela, and eight out of fourteen of them are quite new. The length of their body, as well as 

 that of the other insects described in this work, is always measured in inches or parts of an inch. 



Genus. COLLIURIS Fab. 



1. Diardi. C. ccerulea antennis clavatis : clavd cinereo-fusca, femoribus rufis tibiis tarsisque cyaneis, his 



albopubescentibus. 



C. Diardi. Lat. & Dej. Col. d'Europe, p. 67. 



Long. corp. J 

 Caput labro quadrato septemfido, dentibus aequalibus, mediis obtusis, lateralibus acutis. Palpi articulo 

 ultimo obconico apice subtruncato. Antenna breves filiformes clava sex-articulata. Thorax nee 

 abrupte constrictus nee transverse striatus. Elytra apice truncata fere laevia. 



2. Emarginata. C. ccerulea thorace subvilloso, antennarum articulis tertio quarto quintoque medio rufis sex ultimis 



cinereo-Juscis. 



C. longicollis. Lat. Gen. Crust. & Ins. t. 1. tab. 6. fig. 8. 

 Long. corp. fere •& 

 Caput labro subsemicirculari septemfido, dentibus aequalibus subacutis. Palpi articulis ultimis obconici:- 

 abrupte truncatis apice securiformi. Antennce mediae filiformes vix clavatae. Thorax baud abrupte 

 constrictus vel transverse striatus. Elytra apice dentibus acutis. Pedes femoribus rufis, tibiis tarsisque 

 cyaneis, his, posticis praesertim, albo pubescentibus. 



'i. Tuberculata. C. ccerulea thorace bis abrupte constricto, antennarum articulis tertio quartoque apice rufis 

 quinque ultimis cinereqfuscis. 



Long. corp. & 

 Caput labro subsemicirculari septemfido. Palpi articulis ultimis obconicis apice rotundatis. Antennce 

 vix clavatae longas filiformes. Thorax constrictione anteriore arctissimaet sic fere tuberculatus. Pedes 

 postici femoribus ferrugineis, tibiis cyaneis apice ferrugineis, tarsorumque articulis cinereis villosis, 

 duobus ultimis nigris. 



i. Arnoldi. C. viridiccerulea thorace transverse substriato antennis haud clavatis pallidis : articulo prima 

 subcyaneo. 



Long. corp. -g- 

 Caput labro subsemicirculari, dente laterali minuto reliquis cequalibus. Palpi pallidi articulis ultimis 

 ovatis. Antennce longissimae filiformes. Thorax fere glaber haud abrupte constrictus. Elytra apice 

 sutura maculaque media ferrugineis. Pedes pallidi tibiis posticis ferrugineis, apice tarsisque albis. 

 M.S. Josephi Arnold, M.D. natures indagatoris peritissimi. 



5. HORSFIELDII. 



