BRACHINID^,. — duypta: polistichus. 13 



and nearly equal in length to the third and fourth, which are subconic, the 

 last being obliquely truncate internally : labium small, linear, with three 

 setae: /aZi/a7j3a//<i with the two first joints minute, the third elongate-conic, 

 the fourth subconic with its apex dilated : mentum large, horny, suborbicu- 

 lar : labrum trilobate, the middle lobe largest : mandibles much exserted, not 

 toothed. Antennce with the first joint very long and subclavate, the second 

 minute : head triangular : eyes prominent : thorax cylindric, rather narrowed 

 behind : tarsi with the penultimate joint bifid ; anterior dilated in the males. 



Sp. 1. emarginata. Plate I. f. 2. Ccsrulea, ore, antennis pedi- 



busque rufis. (Long. c. 4 lin.) 

 Dr. emarginata. Fabricius. — Stepli. Catal. No. 7. Ca. Chrysos- 



tomos. Soxoerby. i. pi. 59. 



Head deeply punctate : eyes dusky : thorax with an impressed longitudinal 

 line : elytra oblong, with punctured striae, and slightly notched at the tip : 

 apex of the first and middle of the third joint of the antennae brown: the 

 body sUghtly vUlose, and bright- or greenish- blue above and beneath : 

 mouth, antennae, and legs, red ; tarsi dusky. 



Several specimens of this highly beautiful and rare insect were 

 taken near Hastings and at Faversham during the spring and early 

 part of the summer of 1815 ; since which period I have not heard 

 of any other captures : at the former place I have frequently sought 

 for it without success. My friend, the Rev. F. W. Hope, informs 

 me, that it has been taken beneath marine rejectamenta at Leith 

 Sands near Edinburgh. 



Genus HI. — Polistichus, Bonelli. 



Palpi resembling in their proportions those of the preceding genus, but some- 

 what more slender and shorter, the last joint of the external maxillary, and 

 of the labial, securiform ; internal maxillary fiUform : labium quadrate, with 

 a membranaceous tooth on each side : mandibles short, not toothed : tarsi with 

 all the joints entire. Jintennw with the first joint shorter than the head, the 

 second minute, the rest nearly equal in length : head nearly triangular : tho rax 

 subcordate: 6 0(Zy depressed. 



Sp. 1. fasciolatus. Plate I. f. 3. Briinneus, elytrorum vlttd 

 abbreviata, abdomine pedib usque Jerrugineis. (Long. c. 4i lin.) 

 Pol. fasciolatus. Bonelli. — Steph. Catal No. 8. 



Deeply punctate, brown, with an abbreviated longitudinal vitta on the wing- 

 cases, the antennae, breast, abdomen, and legs rufo-ferrugineous : the elytra 

 depressed, striated. 



Four specimens only of this curious and very rare insect have 



