210 Mr. J. O. Westwood's Descriptions 



to be no doubt that these are to be regarded as the types of the 

 genus Sclerostomus ; which is important to be borne in mind 

 when the structure of the maxillas is examined. The Lampri- 

 madcp of Burmeister, in which sub-family the genus is placed by 

 that author, is especially distinguished by the free upper lip, and 

 by the membranous inner lobe of the maxillae of the males, whilst 

 it is corneous and uncinated in the female; but in the species 

 before us the male, whilst it has the upper lip large, free and hori- 

 zontally porrected, has the inner lobe of the maxillae uncinated, 

 which character would remove the species (and of course the 

 genus also) to the sub-family of FiguUdce of Burmeister, in which 

 the inner lobe of the maxillae of both sexes is uncinated. In the 

 males of Sc. liastalus, Neolragus and Ditoinoides, as we have seen 

 above, this inner lobe of the maxillae is simple, straight and ci- 

 liated, but in the .Sc. costatits it is, as in Scfcmoralis, uncinated 

 in both sexes. These considerations will probably require a modi- 

 fication of the genus, and possibly the establishment of a new 

 genus amongst these small South American Lucanidce. 



Plate XII. fig. 9a, represents the mandible of the male of Sc.Jhnoi-alis, and 

 fig. 9 b, the maxilla of the same sex. 



Sp. 12. Scortizus maculatiis, Klug. (Plate XI. fig. 8 a — 8 c.) 

 Lucanus maculatus, Klug, Specimen alt. Ent. Bras, in Nova Act. 

 xii. 2, 432; Burmeister, Handb. d. Ent. v. p. 

 422 [Scortizus m.] 

 Photidotus irroratus, Hope, Trans. Zool. Soc. i. 100, pi. 14, fig. 3. 

 Scortizus irroratus, West. Annales Sci. Nat. Sec. Ser. i. 119. 



The female of this pretty little insect is figured by Mr. Hope 

 from my drawing in the Transactions of the Zoological Society, 

 together with the structural details, whence it appears that the 

 Jabrum is small, semicircular and ciliated, and the inner lobe of the 

 maxillae uncinated and horny. Both sexes were brought from 

 Brazil by J. Miers, Esq. F.R.S. (to whom I am indebted for a 

 specimen of the female). The male has the head and prothorax 

 considerably wider than in the female, and the hind legs are less 

 strongly spined. The mandibles in this sex (fig. 8 a) are as long 

 as the head and acute, whilst they are much shorter in the female 

 (fig. 8 b), with a strong tooth on the inside. The maxillae of the 

 male (fig. 8 c) has the inner lobe simple and penicillated, whilst 

 it is uncinated and horny in the male. The eyes are but slightly 

 incised in the anterior part by the canthus. 



