September, 1902] 



PSYCHE. 



?m 



2. Cephalic rugae finer and 

 denser, body ferruginous 

 througiiout. 



var. molcfaciciis Buckley. 



3. Head and thorax brown- 

 ish red, gaster in part or 

 entirely brown, rugosity as in 

 No. 2 or somewhat coarser. 



VM. fu Status Emery. 



4. Rugosity a little coarser 

 than in No. i ; head, thorax 

 and legs black, petiole and 

 postpetiole brown, abdomen 

 red, node of petiole longitu- 

 dinally rugose. 



var. marfcnsis Wheeler. 



5. Color reddish black, ped- 

 uncle of petiole, tibiae, tarsi 

 and funiculus red ; sculpture 

 as in no. i . ; beard scanty. 



var. iiigixsceiis, var. nov. 



6. Head and thorax much 

 more coarsely rugose than in 

 Nos. 1-4. Rugae irregular 

 in direction on the pro- 

 and mesonotum, transverse 

 elsewhere on the thorax. 

 Petiole rather coarsely and 

 irregularly rugose ; its ped- 

 uncle shorter than in No. i ; 

 postpetiole rugose-punctate. 



subsp. ri/i;os!is Emery. 

 B. Head less densely rugose ; 

 the rugae distinctly divergent 

 posteriorly ; interrugal spaces 

 densely and distinctly foveolate- 

 punctate. 



a. Ventral surface of petiole 

 without a distinct tooth; iii- 



fraspinal facet of epinotum 

 rugose, scarcely shining. 



occidentalis Cresson. 



1. Head opaque, interrugal 

 punctures very distinct. 



occidentalis Cr. (typical). 



2. Head more shining, in- 

 terrugal punctures less pro- 

 nounced ; petiole less opaque 

 than in No. i. 



var. subnitidns Emery. 

 b. Petiole with a distinct tooth 

 below ; intraspinal facet of 

 epinotum shining, without 

 rugae. subdciitatus Mayr. 



t t Epinotum without spines. 



§ Posterior angles of head smooth 

 and shining; clypeus deeply ex- 

 cised, sancti-hyacinthi, sp. nov. 

 § § Posterior angles of head not 

 smooth and shining ; clypeus not 

 deeply excised. 



a. Interrugal spaces of head 

 indistinctly and confluently 

 punctate ; workers mono- 

 morphic. califoriiictts Buckley. 



1. Color yellowish red, 

 peduncle of petiole about 

 the same length as the node ; 

 postpetiole as high as long. 

 califoniicus Buckley (typical). 



2. Darker red: apical third 

 or more of gaster black ; 

 petiole and postpetiole often 

 brown, the former slender, 

 its node longer and less 

 erect with rounder or but 

 slightly pointed apex. 



var. cstcianiiis Perfrande. 



