62 bulletin: museum of comparative zoology. 



borders often darker. It is on the average a smaller species, but 

 parallels the other closely in details. The mandibles, however, 

 have but six laminae instead of nine, with the first one bearing six 

 teeth; external angle with three or four setiform processes instead of 

 being simple. Labrum less angular at middle. 

 Length of largest type, 30 mm. 



141. Mecistocephalus lifuensis Pocock. 

 Willey's Zool. results, 1898, pt. 1, p. 63. i 

 Locality. — Loyalty Islands: Lifu.^ 



142. Mecistocephalus maxillaris (Gervais). 



Geophilus maxillaris Gervais, Ann. sci. nat., 1837, ser. 2, 7, p. 52. 

 Lamnonyx maxillaris Silvestri, Records Indian mus., 1919, 16, pt. 1, no. 5, 

 p. 61.1 



Localities. — New Guinea: Simbang; Sattelberg.^ 



143. Mecistocephalus modestus (Silvestri). 



Lamnonyx nodestus Silvestri, Records Indian mus., 1919, 16, pt. 1, no. 5, p. 

 68, fig. XIII, 1-10.1 



Locality. — New Guinea: Sattelberg.^ 



144. Mecistocephalus insularis (Lucas). 



Geophilus insularis Lucas, Maillard's Reunion, ed. 2, 1863, Annex N, pi. 21, 



fig. 1. 

 Lamnonyx pundifrons glabridorsalis Attems, Zool. jahrb. Syst., 1900, 13, p. 



1381; Bijdr. dierk., 1915, 20, p. 4.^ 



Locality. — Ceram: Honitetu." Otherwise recorded only from 

 the Seychelles.^ 



145. Mecistocephalus castaneiceps Haase. 



Abhandl. Mus. Dresden, 1887, 5, p. 102, pi. 6, f. 109. Pocock, Ann. mag. nat. 

 hist., 1898, ser. 7, 1, 327.i 



Locality.— Ellice Islands: Rotuma.^ 



Otherwise known from the x\ndamans, Christmas Island, and Pulo 

 Edam. 



