122 REPORT OX ZOOLOGY, MDCCCXLIII. 



(4) Two dorsal segments are opposed to the first abdominal, and also to 

 the last (Heteroceridtf, Hydrophilidte, Spliceridida) ; occasionally also the cor- 

 responding segments of the abdominal and dorsal surface are dislocated from 

 each other, as in the CalandrtB and Histeres. 



In these researches the author has undoubtedly proceeded in a right track, 

 and the results at which he has arrived contain much demanding attention; but 

 they require, nevertheless, to be corrected in many respects. He has examined 

 only dried specimens. The stigmata also must not be passed over without atten- 

 tion. In the larca the eight anterior abdominal rings are always furnished with 

 xf HI mill a ; accordingly it remains also to determine which of the dorsal seg- 

 ments in the Beetle possess them. In general their number is reduced in 

 proportion to the number of the segments, so that in the Beetle one segment 

 more (the last),than pairs of stigmata, is still found; although some exceptions 

 to this exist. The first segment, however, is never observed to be without 

 stiymata, as the author supposes to be the case in Staphylinus (p. 52). The 

 Beetles, also, must be compared more closely with their larva. Thus the 

 lance of Dyiisciis and Ilydrophilus have only eight abdominal rings. For sys- 

 tematic purposes, an accurate knowledge of the composition of the abdomen 

 of the Coleoptera is of importance, since in general it is uniform through- 

 out the same family ; rare and striking exceptions are presented by the Tri- 

 chopterygideB and Lymexylonidce. 



Guerin has begun a work which is intended as a compre- 

 hensive memoir on this Order; it is entitled, "Species et 

 Icouographie generique des Animaux articules, on represen- 

 tation des genres avec la description abregee de toutes les 

 especes de cette grande division du regne animal, onvrage 

 formant une Serie de Mouographies completes. Ire partie, 

 Insectes Coleopteres." The author has commenced with the 

 Monographs of those genera which require them most 

 viz. the Malacodermi. 



I will report below on the few of these monographs which have 

 reached me. It is a great evil that Trench works frequently appear in such 

 small parts as the present, and so irregularly ; it is scarcely possible for us to 

 obtain such a one complete. In future, I hope, by direct commuuicatiou 

 with the Editor, to be placed in a condition to report fully upon the progress 

 of the undertaking. 



Catalogue of the Collection of Coleoptera of Jacob Sturm. 

 (Catalog, der Kafersamrnlung von Jacob Sturm. Mit 

 (5 ausgcmalteii Kupfertafeln. Niirnbcrg, 1843.) 



This is the fourth catalogue of his collection which the worthy author has 



