Corylophus Peruanus. — Breviterovalis, glaber. l;evis, niger, prothorace antico pedi- 

 busqne testaceis, prothorace antice rotundato, margine paullo (lateraliter magis) deplanato; 

 coleopteris apice rotundatis, lateribus margiuatis. Long. IJ ; lat. 1 mill. — Broader than 

 C. cassidoides, black, shining, front of thorax and legs yellow, thorax semicircular, with the 

 margins slightly reflesed, posterior angles acute, elytra moderately convex, sides margined. 



Although the foregoing descriptions are too imperfect for identification without the aid 

 of types, the species seem to be distinct, since the characters given do not agree with any 

 others with which I am acquainted ; but from such scanty material it is not possible to 

 form any reliable opinion. 



KRAATZ (G.) 

 Berlin Ent. Zeitschr. 1.S69, p. 285. 

 In this paper Dr. Kraatz reviews the nomenclature of several species of Saciiim and 

 Arthrolips, and gives the following synonymic list as the result of his observations : — 



Saciura pusillum, Gyll. ; Thoms. 



,, pusillum, Duval ? ? 



,, obscurum, Sahib., not Dejean. 



,, cordriiiiiin, Thoms. 



,, pusUlum, Kedtenb. 



,, atnim, Parreyss ; Zeigl. ; Dejean. 



„ .' disct'deiix, Duval. 



,, nanum, Mnls. 



,, brunneiun, Brisout. 



,, Maderse, Kraatz. 



,, piisitlinii, Wollaston. 

 Arthrolips piceus, Comolli. 



,, obi.ciinis, Duval. 



,, vhxi-uim, Dejean, not Sahlberg. 



,, var. conve.ciuscuius, Motsch. 



,, humilis, Rosenhauer. 



,, TKjitlioni.i-, Duval. 



.Judging by the miscellaneous condition of the nomenclature of this family, it would 

 seem to me very doulitful whether some of the specimens submitted to Dr. Kraatz possessed 

 any affinity to the species whose name they bore on their labels ; at any rate, after a careful 

 examination of a large number of individuals, I have arrived in some instances at a con- 

 clusion differing from that expressed in the foregoing synonymy. All the examples of 

 Sacium obscurum which I have seen belong to the genus Arthrolips, and are totally distinct 

 from A. piceus. Of Sacium corticimtm I have only seen a single example, but this exhibited 

 11-jointed antenna. With regard to S. discedens, I quite agree witli Dr. Kraatz that it is 

 synonymous with .S. obscurum. Arthrolips rufithorax is a distinct and good species (if I can 

 judge from types in M. .Jekel's collection |, and cannot be associated with any other. In 

 the same collection there was a Sacium labelled .S'. nanum which was clearly identical with 

 Arthrolips rufithorax, and, since this is the only specimen I have met with bearing the 

 name " nanum," I am unable to express any opinion as to that species ; in Gemminger and 

 Harold's Catalogue 5. nanum is quoted as a synonym of S. pusillum. I have often seen 

 examples of A. humilis with their thorax rufescent, but these are totally diti'erent from 

 A. rujithorax both in size and shape. In this paper Dr. Kraatz very properly changes the 

 name of a Sacium found in Madeira by Mr. Wollaston, and called by him S. pusillum, into 

 .S'. Madera:. 



LATREILLE (P. A.) 



Cuvier, Eegne Anim. ed. ii. t. v. p. 162 (1858). 



Cossyphus pusillus, Gyll., is made a separate genus by M. Latreille in the above 



work, under the name Cbjpeaster ; but, since that name had been previously used for a 



genus of Echinoderms, it was subsequently cancelled by Dr. Le Conte, and "Sacium" 



substituted in its stead. 



