190 % LAMELLICOKNIA. 



exception that those of the intermediate pair are not distorted, are nearly as in L. ravida 

 and L. testaceipennis, that is, they have a broad basal tooth, a less broad and longer 

 median tooth, and a long sharp and curved apical tooth, the intervals between all of 

 which are nearly of the same width. In the female, as usual in the group, the median 

 tooth is less broad and more gradually pointed than in the male, and the distances 

 between the three teeth are considerably wider. The other sexual differences are : — 



c? . Pygidium parum convexum, sparsim ruguloso-punctatum et setifemm, margine apicali valde reflexo. 

 "Venter medio politus, lsevis, convexus, medio vage canaliculars, interdum depressus et profundius canali- 

 culars ; segmento 5° et 6' plaga mediana dense et aspere pilifero-punctatis, 6° magno, piano, margine 

 apicali medio inciso. Antennarum clava parva, ovata. 



$ . Pygidium planum, apice prope marginem (haud reflexum) convexum. Venter convexus, lsevis, suturis late 

 deletis, segmentis 5° et 6° planis, politis, sparsim punctatis. 



Long. 13-18 millim. 



Besides a specimen named L. crihricollis, Blanch., there are others in the Salle 

 collection labelled Lachnosterna testacea, Sturm (MS.). 



The Ancylonycha crihricollis, Kedt., in Hugel's ' Kaschmir ' (1844) is anterior in date 

 to Blanchard's name (1850), but is wrongly placed in the genus, being a Schizonycha. 



11. Lachnosterna rugicollis. (Tab. X. fig. 24, $ .) 



Ancylonycha rugicollis, Sturm, Cat. p. 123 \ 



L. cribricolli (Blanch.) afflnis, sed differt capite thoraceque piceo-nigris, hoc multo densius grossissime eonfluenter 

 punctato, etc. Elongato-oblonga, postice latior, subtus cum pedibus antennisque testaceo-rufa, capite 

 thoraceque piceo-nigris, elytris fulvo-testaceis, his multo subtilius et sparsius quam in L. cribricolli punc- 

 tatis, ecostatis ; clypeo fere sicut in L. cribricolli, brevi rotundato, medio sinuato, sed sutura frontali vix 

 impressa ; thorace medio valde angulatim dilatato, margine grosse crenato, supra erecte piloso. 

 5 . Pygidium fere planum, erecte pilosum. Ungues tridentati, dente basali lato rotundato, mediano paullo 

 distante elongato acuto, apicali longiore et acutiore. 



Long. 14|-15| millim. 



Hah. Mexico x {Salle, ex coll. Sturm). 



Three examples, two of which bear the name in Sturm's handwriting; one of them 

 is possibly a male, but the apex of the abdomen is wanting. 



The species is certainly distinct from the wholly rufo-testaceous L. crihricollis. 

 Blanch., under which it is placed as a synonym in the Munich Catalogue. 



12. Lachnosterna foveicollis. 



L. leoninm valde afflnis. Magis ovata, nigro-picca, elytris glabris, sublsevibus, sparsissime et subtiliter punc- 

 tulatis, clypeo paullo magis elongato ; thorace haud differt. 



<3 . Pygidium mediocriter convexum, apice longissimo pilosum, basi glabrum. Venter medio convexus, lsevis, 

 vage canaliculars, segmento 5° apice haud punctulato, 6° quam in L. leonina paullo breviore, valde 

 concavo, subtiliter ruguloso. Ungues sicut in L. leonina, sed dente basali majore, triangulari. 



Long. 15 millim. 



Bab. Mexico [Sturm, in coll. Salle). 



I find in our collections no other example of this species than the single specimen 

 labelled as above by Sturm in the Salle collection. 



