8 



I have received types of tliese species from Herr Reitter and several other experienced 

 entomologists, and, having compared them witli M. Duval's original and very accurate 

 descriptions, I believe that the following notes will prove to be correct : — 



S. rufithorax seems to be a good and distinct species of Arthrulips. 



S. discedens is identical with, and long posterior to, ' '. obscuni:i, Sahlberg. 



C. sublsevipennis is a well-known and genuine species. 



Moronillus ruficoUiB. — This is also a well-known species, but the generic name is 

 posterior to l,'lii//'iiliiux, Le Conte. 



Orthoperus pilosiusculus. — M. Duval's description of this insect appears to me 

 to point unuiistakubly to the species generally known as (>. curiareus, Key., and, since 

 M. Duval's name possesses an undoubted claim to priority, it should be retained. 



[The author appears to have had some doubt on this point, and retained the name 

 curiaceiu for the species in the descriptive part of his MSS. — Ed.] 



ERICHSON W. F.I 

 .\icliiv fur Natur!,'cscliifhti', iiirlin, 1812, i. p. 210. 



Corylophus thoracicus. 

 ,, fasciatus. 



Both species are well described. By the shape of its thorax the former evidently 

 belongs to Sericodents, and in size and colour agrees well with dark examples of .S. lateralis. 

 The latter, ' '. fasciatus, is the American Saciiim faseiatum, which, like many of its congeners, 

 varies much in size. 



GYLLENHAL (L.), Eq. aurat. 



Insecta Suecica. 



Cryptophagus brunnipes, vol. i. pt. i. p. 185 (1808). 



atomus, I. <■. 

 Cossyphus pusillus, vol. i. pt. ii. p. 526 (1810). 



,, lateralis, vol. i. pt. iv. App. p. 'SIG (1827). 



Until lately several species of Oithtijierm have been comprised under the name " lirun- 

 nipes, Gyll."; but through the exertions of M. Wankowicz and Herr Reitter these have now 

 been satisfactorily separated upon very evident superficial characters, and the original name 

 retained for that form alone which agrees the most closely with Gyllenhal's description. 



A very similar confusion has also occurred in the case of Cossi/phax pusillus : this name 

 has been applied to several species of Sacinm, any one of which would agree fairly well with 

 Gyllenhal's cliaracters. I have therefore chosen as my type of Sacinm pnsillam the species 

 which bears tliat name in most of the chief continental collections. 



In Pt. iv. App. p. 510, Gyllpiihal bi-- M'-'Tately described Sfricoderuji lateralis, also as 

 a species of Cussypiius. 



KIRSCH (TH.) 

 Deutsclio l''ntoniologisclie Zeitschrift, 1870, vol. xx. p. 132, " Der Peruanischen Kiiferfauna." 



Arthrolips posticus. — Ovalis, postice truucutus, pubescens, ferruginous, prothorace 

 semicirciilari, iiiaryino autico deplanato, testaceo ; elytris dimidio posteriori (margiue 

 apicali ct lattriili cxccpto) nigris. Long. Ijl ; lat. 1 mill. 



Arthrolips thoracicus. — Oblongo-ovalis, pubescens, fuscus, subtus dilutior, pro- 

 thoracis mar^jine antico utriiique atque elytrorum apice flavescentibus. Long. 1 ; lat. jj mill. 



Sericoderus tropicus. — Ovatus, glnber, subtus fuscus, abdomine pedibusque 

 dilutioribus ; supra fusco-testaceus ; prothorace aemicirculari, lateribus anguste marginato, 

 angulis posticis acuminatis; elytris subtilissime crebre punctatis. Long. Iji; lat. 1 mill. 

 — Twice larger than N. lateralis, base of the elytra dark, thorax semicircular, with the 

 margins slightly rtllexed, without hairs, finely and densely punctured. 



