Mr. Newport on the Class Myriapoda, Order Chilopoda. 429 



earth, and never once leaves them until the young are developed, which is at 

 the end of about a fortnight or three weeks. During the whole of this time 

 she remains in the cell with her body coiled around the eggs, incubating them, 

 and constantly turning and attending to them. I have been so fortunate as to 

 verify this observation several times during the last three years, and I believe 

 this is the first recorded instance of incubation among the Myriapoda. 



In the table of Genera and Families given in the introductory part of this 

 Monograph (p. 276), I had connected the ScolopendrelUda; with the Geophi- 

 lidce in deference to the views of M. Gervais, and, in consequence, divided the 

 family into two subfamilies, Scolopendrelllnce and Geophilince ; but having since 

 satisfied myself of the right of the first to be considered as a separate family, 

 more closely allied to Lithobiidce, the Geophilidce now constitute a very natural 

 group. 



Familia 5. Geophilid^, Leach. 



Segmenta numerosa, subaequalia, singula e subsegmentis 2 completis sed inaequalibus efFor- 

 mata. Antenna 14-articulat8e. Segmentum anale pedibus brevibus, styliformibus. 



Genus 13. Mecistocephalus, A^ew^por^ (Geophili maxillares, Gevvais.) 



Segmentum cephalicum angustissimum, elongatum, quadratum, latitudine plus duplo lon- 

 gius. Antennce subapproximatae, articulis obconicis. Segmenta basilare subbasilareque 

 coalita, pedum par anticum gerentia. Mandibula incraasatae, prominentes, margine in- 

 temo denticulatae. Corpus sensim attenuatum. 



1. Mecist. ferrugineus, Koch, Deutschl. Crust. Myriap. &c. heft 3. no. 1. 



2. Mecist. maxillaris, subvillosus, capite antennisque ferrugineis, corpore pallide flavo, pe- 



dum paribus 46. 

 Geophilus maxillaris, Gerv, in Ann. Set. Nat. Janv. 1837. sp. 2. 

 Hub. Prope Parisios. 



.3. Mecist. punctifrons (Tab. XXXIII. fig. l7-)> capite saturate castaneo, segmento cepha- 

 lico mandibulisque profunde punctatis, corpore testaceo, mandibulis dentibus duobus 

 acutis magnis, pedum paribus 49. — Long. unc. 2-;%. 



Mecist. punctifrons, Newp.in Proc. Zool. Soc. Dec. 13, 1842, p. 179. 



Hab. In India Orientali, prope Maderaspataiiam. {v. in Mus. Brit.) 



4. Mecist. Guildingii (Tab. XXXIII. figs. 18, 19.), capite ferrugineo, segmento cephalico 



