Insects. 1933 



British Museum, I found that it does not belong to E. signatus, but to the species 

 described by Aube under the name of E. Fischeri. Denny having overlooked its 

 principal character, viz., the little fovea on the vertex, it is not surprising that E. 

 Kirbii has been mistaken by those who had no opportunity of seeing the original spe- 

 cimen. To this list of Euplectus Mr. Stephens added in his ' Manual ' a supposed 

 new species, named by him E. ruficornis : I have examined it in Mr. Stephens's own 

 cabinet, and cannot consider it different from E. ambiguus, Reich, (pusillus, Denny). 

 E. sanguineus, Denny, is stated by Mr. Stephens to be E. minutus, Marsh., but the 

 specimen of the latter in Mr. Stephens's collection seems to me to belong to E. sig- 

 natus. Another species of this genus is the E. Easterbrookianus, Leach, but the cha- 

 racters published by Dr. Leach being so short as not to enable any one to recognize 

 this insect, and the typical specimen being lost, I think it should be erased from the 

 list of British species. There remain seven species of Euplectus and one of Trimium. 

 I have, however, found that the specimen in the British Museum, named by Dr. Leach 

 E. Kunzei, and referred by Mr. Denny to E. brevicornis, is distinct from that species, 

 and belongs to the Trimium brevipenne lately described by Baron Chaudoir, which 

 differs from T. brevicorne in its yellow colour, and also in the figure of the elytra, 

 which are shorter and notched at the apex. 



Of the genus Bythinus Mr. Denny enumerates three, and of Areopagus four, spe- 

 cies, viz., B. Curtisii, Denny, securiger, Reich., Burrellii, Denny, A. bulbifer, Reich., 

 clavicornis, Panz., puncticollis, Denny, glabricollis, Reich. Of this number A. gla- 

 bricollis is to be deducted, being only the female of A. bulbifer, and distinct from the 

 true glabricollis, Reich., which is the female of clavicornis. Mr. Stephens has added 

 a supposed new species to the former genus, named by him B. grandipalpus, which, 

 however, is nothing but the female of B. Curtisii. 



Of the genus Tychus one representative only has been recorded as British. T have 

 seen, however, in the collection of Mr. Wollaston, several specimens, taken in the 

 south of England, which belong to T. ibericus, Victor, Aube (dichrous, Schmidt), a 

 species chiefly distinguished from T. niger by its red elytra and pale legs and antennae, 

 and which may perhaps be only a climatic variety of niger. 



The genus Bryaxis is, according to Mr. Denny, represented in Great Britain by 

 seven species, viz., B. longicornis, Leach, sanguinea, Reich., impressa, Panz., fossu- 

 lata, Reich., haematica, Reich., juncorum, Leach, nigriventris, Denny. Of these 

 B. nigriventris is identical with Pselaphus venustus, Reich., and belongs to Dr. Aube's 

 genus Batrisus, sufficiently distinguished from Bryaxis, which has a single claw only 

 on each tarsus, by having the tarsi terminated with two claws of unequal size. The 

 above number of species is further to be reduced, as B. longicornis is only the male of 

 B. longicornis [sic. Ed.] Mr. Curtis added two other species, viz., B. assimilis, Curtis, 

 and sulcicollis, Reich. As to the former, which I know only by Mr. Curtis's careful 

 description, I have little doubt it is the Bryaxis haemoptera lately described by Dr. 

 Aube, of which species I have seen several British specimens, taken by Mr. Wollaston 

 in the Isle of Portland. If it should prove to be so the name given by Mr. Curtis 

 must stand. B. sulcicollis, beautifully figured by Mr. Curtis, is not the true Pselaphus 

 sulcicollis, Reich. (Euplectus sulcicollis, Erichs., Aube), but a species very closely al- 

 lied to it, which has lately been described by Dr. Aube under the name of Euplectus 

 Maeskelii. Baron Chaudoir first observed that E. sulcicollis differs generically both 

 from Euplectus and Bryaxis in the structure of its claws, which are of very unequal 

 size, still more so than in Batrisus, and proposed to form a new genus under the name 

 V 3 B 



