64 MEMOIRS ON THE COLEOPTERA 



more densely and strongly punctate and rugulose near the margins, 

 more coarsely but sparsely basally; side margins not concave, feebly 

 declivous to the abruptly elevated marginal bead, the lateral basal im- 

 pressions broad and distinct; other impressions, except a fine and partial 

 median stria, obsolete; base broadly arcuate, sinuate slightly near the 

 angles; elytra short, a fourth (of) to a third ( 9 ) longer than wide, parallel, 

 feebly arcuate at the sides; surface faintly alutaceous; punctures and ante- 

 rior rugulae as in peregrinator, the fine striae rather more evident and the 

 punctures less minute basally; tarsi very short, rather slender, the 

 posterior but little more than three-fifths as long as the tibiae, the an- 

 terior (cf) moderately dilated. Length 16.0-17.4 mm.; width 7.8-8.2 

 mm. California (Coronado, near San Diego). 



For some years I considered this to be nothing more than a 

 sea-coast modification of parviceps, but on closer examination this 

 assumption proves to be untenable; the anterior tarsi of the male 

 are slightly more dilated, the second joint being only about as 

 wide as long in that species, while here it is decidedly wider than 

 long and the hind tarsi are shorter, these being about three-fourths 

 as long as the tibiae in parviceps; again, the prothorax is much more 

 transverse and the head in relation thereto still smaller, and the 

 transverse elytral rugulse are more lateral. It seems to be allied 

 also to eremicola Fall, from San Clemente Island, but is materially 

 smaller, the length of the latter being given as 17-19 mm., and with 

 shorter elytra. The last ventral of the female is broadly sub- 

 angulate and is not punctured. 



The three species sponsa, parviceps and hospes constitute a pe- 

 culiar group of the genus of the peregrinator type but minute in 

 comparison; whether eremicola should be associated with them or 

 not is uncertain. 



In the cancellata group there are several distinct species hitherto 

 uncharacterized ; cenescens Lee., from northern Oregon, is however 

 purely a synonym; it was compared under the original description 

 with tepida and calida only, to which of course it is in no way closely 

 allied. The two following belong to the fauna of extreme southern 

 California : 



Calosoma esuriens n. sp. Body narrow, parallel and convex in form, 

 somewhat shining, black, the elytra more polished and with the foveae 

 and side margins in part feebly metallic green; head large, rather finely, 

 not densely punctate and rugulose; antennae (9) very short, picescent 

 distally, distinctly shorter than the thoracic width; prothorax short, 

 and very transverse, fully twice as wide as long and but very little nar- 



