BEMBIDIIDiE. — TACHYPUS. 25 



Sp. 10. Doris. Nigro-casrulescens, nitida, elytris punctato-striatis, macula apicis 



pedibusque pallidis. (Long. corp. lj — lj lin.) 

 El. Doris. Illiger.—Lo. Doris. Steph. Catal. p. 39. A T o. 387. 



Shining blue-black : head with two parallel frontal sulci : thorax very glossy, 

 with a moderate dorsal line and two basal impressions, one on each side : 

 elytra deep bluish-black, shining, punctate-striated, with a testaceous spot 

 near the apex : legs pale testaceous : body black : antenna? fuscous, with the 

 base testaceous. 



This, which appears to be the true Ca. Doris of Illiger and 

 Panzer, is far from an uncommon species in Battersea-fields, where 

 it has been taken abundantly by Messrs. Waterhouse and West- 

 wood. 



Sp. 11. Spencii. Nigro-coerulescens, nitida, elytris punctato-striatis, apice piceo, 

 j "route sulcis duobus parallelis, pedibus antennarumque basi rufis. (Long. corp. 

 If lin.) 

 Ocys Spencii. Kirby MSS.—Lo. Spencii. Steph. Catal. p. 40. A T o. 388. 



Shining blue-black : head with the frontal sulci parallel : thorax convex, slightly 

 glossy, smooth, with a faint dorsal line, and a simple impression on each side 

 at the base : elytra rather shining ; deep black-blue or violaceous ; somewhat 

 deeply punctate-striated, especially at the base, the strise vanishing before the 

 apex, which is piceous: legs bright rufous: basal joint of the antenna? the 

 same, the rest dusky. 



This and the three preceding insects rather depart from the habit of the genus, 

 and may probably hereafter be associated together under a distinct appellation : 

 the thorax is less convex anteriorly, and the hinder angles more obvious than 

 in the typical species, Lo. quadrimaculatus. 



My specimens of this insect I caught in Battersea-fields many 

 years since, and compared with Mr. Kirby 's in 1821, with which 

 they^uppeared to correspond. Mr. Kirby 's insects were found in 

 Suffolk. 



Genus LXXII. — T achy pus, Megerle. 



Palpi moderate ; external maxillary with the second and third joints of nearly 

 equal length, the latter very pilose, attenuated at the base, rather suddenly cla- 

 vate, the terminal joint extremely minute, truncate; labial as in Lopha : labrum 

 transverse, entire: mandibles rather elongate, slightly bent, acute: mentum 

 anteriorly emarginate, the emargination with an obtuse lobe. Antenna? with 

 the two basal joints naked; the rest pubescent; third joint longest, the rest 

 gradually decreasing ; the eighth, ninth, and tenth being very short : head 

 large : eyes rather prominent : thorax cordate-truncate, somewhat convex an- 

 teriorly, attenuated posteriorly, sessile: elytra elongate, ovate, sometimes a 

 little dilated : anterior tarsi of the males with the two basal joints dilated. 



