20 LYCIB^. 



Var. L. fenestratus, Murray, Ann. Sf Mag. N, Hist., 1868, i. p. 331. 

 Var. L. harpago, Tlioms., Arch. Ent., ii. p. 76 ; Lacord., Gen. Col., 

 Atlas, t. 45. f. 3 ; Murray, Ann. Sf Mag. N. Hist, 1868, i. p. 330. 



Niger ; thoracis lateribus elytrisque aurantiacis, his macula laterali 

 apiceque nigris. 6 • Long. 7-10| lin,, lat. 4)^-8 lin, 



5 . Long. 7-10| lin., lat. 3|-5| lin. 



Hah. Old Calabar, Gaboon, Sierra Leone. 



The amount of black on the elytra varies very much in this species. 

 Sometimes there is only a black lateral spot, and an apical border 

 parallel "with the margin as in L. elec/ans, but generally the black at 

 the apex is suffused. Sometimes the lateral spot is more or less 

 united with the black at the apex ; it is so slightly in the type spe- 

 cimen (2) oi L. latissimiis, in the Linnean collection. The variety 

 L. harpago, Th., has the two lateral spots united by a fascia. Variety 

 fenestratus, Murray, has this fascia and the black at the apex con- 

 fluent. Sometimes the elytra are entirely black except a yeUow 

 fascia. 



The extent to which the elytra are dilated in the male and the 

 form of the apical truncature appear to vary considerably, while the 

 various systems of coloration above mentioned are not constantly 

 accompanied by any one form of elytra. 



With regard to the synonymy given above, it must be noticed that 

 Fabricius does not mention the black in the middle of the thorax, 

 for which reason Guerin (Rev. Zool., 1847, p. 227) provisionally re- 

 named the Fabrician insect FabricU. There can, however, be little 

 doubt that the omission was an oversight on the part of Fabricius, 

 especially as the examples in the Banksian collection (said to have 

 been named by Fabricius) are typical latissimus, the male example 

 having the lateral spot on the elytra partly united with the black at 

 the apex as in the Linnean type. 



The description given by Olivier applies well to latissimus, Linn. ; 

 but his figure (Ent., ii. 29, t. 1. f. 2) represents quite a distinct 

 species allied to L. ampliatus, Fahr,, and is almost certainly the male 

 of the species which he names L. prohoscideus* (Ent., ii. 29, p. 8, 

 t. 1. f. 6). 



BEOXYLUS. 



Rostrum none. Apical joint of palpi very large, long, knife- 

 shaped. Antennae very compressed, simple. Thorax with an in- 

 terrupted mesial carina. Elytra very ample, inflated, quadricostate, 

 the interstices divided into subquadrate spaces by transverse carinas. 



The species upon which this genus is founded closely resembles 

 Calopteron dilatatum. Bourgeois, but differs in the form of the palpi. 



* This species as well as ferrugineus. Fab., lateralis, Dalm., and perliaps 

 some other Fabrician species of Lycus, appear to be omitted from Gremminger 

 and T. Harold's Catalogue of Coleoptera. 



