﻿of Lucanoid Coleoptera. 17 



attenuatis ; tibiis anticis curvatis, ad apicem spina minuta 

 extus instructis, quatuor posticis inennibus. 



Long. Corp. unc. 1, lin. 8 ; mandib. lin. 9. 



Hab. Ins. Taprobana. 



The above insect seems to be rather abundant in Ceylon, 

 numerous specimens having fallen under my notice, but those 

 with highly- developed mandibles appear to be scarce. In Sir 

 Emerson Tennant's History of Ceylon, i. 27, Cat. of Coleop., the 

 name C'mgalensis is misprinted Bengalensis : in the same work, the 

 genus Singhala (sp. tenella, Blanchard), belonging to the family 

 of the Rutelidce (vid. Cat. Coil. Mus. Hist. Nat. Paris, part 2, 

 p. 198), is erroneously placed with the Lucanidce. 



Odontolabis nigrita, H. Deyrolle, MS. 

 A new species from Ceylon, in the collection of Count Mniszech. 

 According to M. Henri Deyrolle, closely allied to O. Cingalens'ts ; 

 a description will shortly appear in the Ann. Soc. Ent. de France. 

 It will form, together with O. C'mgalensis and 0. ceratus, the third 

 section of the genus Odontolabis, having elongate mandibles, but 

 the head, instead of being armed with a spine behind the eyes, 

 is only slightly inflated, the body depressed and highly polished, 

 and the anterior tibiae are curved. The sub-genus Calcodes of 

 Westwood (vide Hope's Catalogue) is incorporated with this sec- 

 tion, the metallic colour of Calcodes ceratus forming only one of its 

 chief characters. 



[Gen. Heterochthes, Westw.* 



Genus (vel sub-genus) novum inter Anoplocnemum et Odontula- 



bidem collocandum. Caput maribus magnum, transverso- 



quadratum, lateribus pone oculos baud tuberculatum, margine 



antico fere recto, clypeo in tuberculum parvum porrecto. 



Antennae clava tripartita. Mandibulse maribus dente parvo 



sub-apicali intus armatae. Maxillae in utroque sexu inermes. 



Prothorax transversus, lateribus inermibus, parallelis, angulis 



posticis rotundatis. Tibiae anticae extus 4-dentat£e, mediae et 



posticae inermes. Elytra brevia, ovata, baud striata. 



This new and interesting sub-genus approaches most nearly to 



Odontolabis, but the insects in that group have the head deeply 



emarginate in the middle of the anterior margin, as well as armed 



with a strong spine on each side of the head behind the eyes ; and the 



* I am indebted to my friend Prof. Westwood for this description, together 

 wiih others hereafter mentioned ; it formed part of an interesting paper on Luca- 

 noid Coleoptera read by him before the Society on the 4th January, 1864, 



VOL. II. THIRD SERIES, PART I. — MAY, 1864, C 



