438 Mr. W. C. (Vawloy 071 



In addition, the new variety is uniformly darker in coU)ur 

 than typical curiarins {Clark, no. 10). 



Type W. C. C. coll. 



Mayr originally described coriarius as a species, but later 

 authors have considered it a race of ritficeps. It sliouUl 

 rank as a species for the following reasons : — There has 

 been a certain amount of confusion among authors, owing 

 to the l)revity of Smith's description of ruficeps. I have 

 recently examined the type, of which I give a description 

 below, and there is no doubt that Smith's description has 

 led to errors. The shape of the head is quite unlike that 

 of coriaritts, being somewhat long and only slightly wider in 

 front than behind. Farther, the preapical tooth is nearly 



I'iir. 2. Fiiz. 1. 



Fig. 1. — Mandibio of O. coriarius, var. obscura, nov. 

 Fig. 2. — Mandible of O. coriarius, Mayr. 



as long as the apical, and is not sharply truncate, as in 

 coriarius (vide fig. 2). Smith in his description says the teeth 

 are "stout and blunt," which hardly conveys the appearance 

 of the teeth in the type. In fact, Forel, relying on these 

 words, has described a race of rujiceps, which he called 

 acutidens (Ann. Soc. Eut. Belg. xliv, p. 56, 1900). As a 

 further result of the examination of Smith's type and the 

 discovery of a $J major of acutidens, the latter will have to 

 rank as a species. 



Odontomachus rujiceps, Smith. (Fig. 3.) 



Type (British Museum). 



5 . Length (without mandibles) 12*8 ram. ; mandibles 

 22 mm. Length of head 3"7 mm. ; width of eyes 2'8 mm.; 

 width at occiput 2*1 mm. 



Colour ferruginous. 



^Mandibh^s toothed along inner border witli 9-10 small 

 teeth. Apical tooth slightly longer than preapical {vide Hg. 3). 



Head not greatly wider in front than behind. 



Spine of node slightly curved backwards. Node in profile 

 straight in front, rounded behind. 



