new Species of Coleopterous Insects, 153 



very differently from what they appear in my insect ; and the figure 

 of this part given by M. de Laporte in the French Transactions, 

 from its exact conformity with that of M. Guerin, would appear to 

 have been copied from it. This organ, as represented in these 

 figures, unfurnished with any terminal or lateral lobes, and having 

 the palpi inserted upon the summit of its rounded extremity, would 

 appear to have an unusual and unnatural construction ; whereas a 

 figure of this organ by Mr. Westwood in Griffith's Animal King- 

 dom, pi. 61. fig. 1. f,, from Callirhipis Childreni of Gray, precisely 

 corresponds with that of the maxillae of Call. Hoodii, as now given, 

 fig. 3. b., although the former species belongs to the uniformly co- 

 loured division, showing the maxillae to be furnished with two 

 lobes, very slender and short, and thickly covered with hairs, 

 the outer one being biarticulate, and the inner one longer and pen- 

 cil-shaped. Fig. 3. c. represents the mentum, labium, and labial 

 palpi. 



Heteromera, Latr. 



Fam. CisTELiD^. 



Genus Lystronychus, Latr. 



Lystronychus pulchellus. Plate XIV. fig. 5. 



Obscur^ violaceo niger, elytris saturate rubris, obsolete punctato- 

 striatis, maculis sex nigris. 



Long, corporis 4^ lin., lat. 2 lin. 



Habitat in Brasiha circum Monte Video. 



In Mus. nostro. 



Descr. Antenna violaceo-nigrae, graciles, apicem versus sensim 

 paul6 crassiores. Caput nigrum depressum, obsolete rugosum, 

 linea ad basin impressa. Thorax latior quam longus, cordato- 

 truncatus, convexus, niger, rugosus, angulis anterioribus baud 

 prominuhs, lateribus rotundatis, postice contractis. Elytra 

 thorace hrh duplo latiora, obscure rubra, postice vix dilatata, 

 apice depresso subacuminato ; singula maculis tribus nigris 

 (quarum antica subquadrata, intermedia subrotunda, et postica 

 minor), striisque punctatis octo, pilis suberectis griseis secun- 

 dum interstitia regulariter dispositis, punctorumque serie ad 

 marginem. Corpus infra nigro-violaceum. Pedes obscuri; 

 femoribus simplicibus. 



This insect appears to agree in form of body, construction of 

 antennae, and simple legs, with Helops equestris of Fabricius, which 

 forms the type of the genus Lystronychus of Latreille. 



