128 Eev. T. A. Marshall's monograph of 



but the writer doubts whether his species be the same as 

 Wesmael's. Wesmael quotes annulatus, Nees, as a 

 synonym, but doubtfully, because the latter has testa- 

 ceous femora ; in his Supplement he changes his mind, 

 and thinks they may be the same, since H.-Schiiffer 

 (F. G., cliv., 23) describes the femora as sometimes 

 black. Eeinhard's opinion has been already mentioned 

 (see sp. 4). Wesmael also states that the males of his 

 C . fenestratus belong to annulipcs, var. 1 (without pale 

 spots on the abdomen). But fenestratus, Nees, Wesm., 

 is made up of the sexes of two different species, and the 

 name ought to be abandoned, Reinhard pronounces 

 sulcatus, Nees, ^ to be certainly the same as annuUpcs, 

 "Wesm. (but not necessarily its varieties) ; ?l\\(\. fenestratus, 

 Nees, (? probably the same as annulatus, Nees. This is 

 fortunately almost the last sample of the nomenclature 

 of Chclonus we shall have occasion to give. The present 

 insect is clearly not annulatus, Nees, nor annulipes, 

 Wesm., but var. 1 of the latter, which seems a good 

 species, and requires a name. 



7. Chelonus decorus, n. s. 



Niger, abdoniiue triangulariter bimaculato ; palpis testaceis, 

 basi fuscis ; pedibus rufo-testaceis, femoribus anterioribus basi, 

 posticis pneter apicem, uigris ; tibiis posticis a^nce basique, tarsis 

 omnibus apice, fuscis. Alee subfusco-hyalinse, stigmate nervisque 

 fuscis, costa et parastigmate cum nervo prsebrachiali testaceis, 

 squamulis nigris ; areola radialis brevis, lata ; abscissa 3tia extus 

 vix coucava ; alarum iuferarum radius sinuatus. Vertex trans- 

 versus, pone oculos contractus ; geuae baud dilatatai. Antenna) ? 

 27-articulata3, ultra medium dilatatae, apice teretiuscula;, corpora 

 breviores. Fovea frontalis parva, nitida, jaarum rugulosa. Meso- 

 thorax antice variolosus, postice reticulatus. Scutellum confertim 

 variolosum, punctis majoribus undique cinctum. Metathorax a 

 basi declivis, aj)ice truncato, augulis posticis vix dentiformibus. 

 Abdomen postice latius, tborace longius, apice rotundato, more 

 Bolito scabratum, carinis basalibus nuUis. Terebra recondita. 



Black ; abdomen vi^itli 2 triangular basal yellowish spots ; palpi 

 and tips of mandibles rufo-testaceous, the former dusky at the base ; 

 legs rufo-tcstaccous, fore and middle femora at the base, hind 

 femora except the apex, black ; hind tibiie fuscous at both ends ; 

 all the tarsi testaceous with fuscous tips. Wings subfusco-hyaline, 

 stigma and nervures fuscous, costa, parastigma, and prsebrachial 

 nervure testaceous, squamulte black ; radial areolet broader but 



