o22 THE CANADIA.N ENTOMOLOGIST. 



NEW PHILANTHID WASPS. 



BY S. A. ROHWER, BOULDER, COLO. 



Cerceris caloc/iorti, n. sp. — 9- Length, about lo mm.; length of 

 anterior wing 7 mm. Head with rather large, separated punctures; closest 

 anteriorly, where they are somewhat confluent; ( cclli in a low triangle, 

 the distance between the two lateral ocelli less than the distance to the 

 nearest eye margin ; between the antennae is a low, broad carina, which 

 goes to base of the clypeus ; first joint of flagellum about equal to 2 + 3 ; 

 flagellum somewhat thickened from base to apex ; clypeus distmctly 

 convex in middle, convex part truncate, without any teeth ; pronotum 

 rounded, without ridge anteriorly, and not broken in middle, with a i&w 

 well-separated punctures ; propleura with irregular stride ; dorsulum with 

 distinct punctures, some well separated, others touching each other, a 

 broad, shallow furrow down middle ; scutellum similarly punctured ; 

 mesopleura punctured similarly, but the punctures more shallow ; raeso- 

 pectus in middle without punctures ; metathorax more shining than 

 dorsulum, and the punctures are larger ; enclosure dull, at anterior angles 

 with four or five oblique striae, rest very finely, longitudinally striated, 

 middle furrow distinct but not strong ; apical angles of fore tarsi rather 

 strongly produced ; posterior coxse distinctly, strongly excavated on outer 

 margin ; posterior tibiae serrate on outer margin ; first abdominal segment 

 small ; all the abdominal segments somewhat constricted at base above, 

 punctures of dorsal segments large (larger on first three segments), well 

 separated ; punctures of the ventral segments are not as strong as those of 

 the dorsal ; pygidium distinctly margined, about twice as long as width at 

 base, obtusely rounded, densely punctured (punctures confluent). Colour 

 black, subopaque basal part of mandibles, clypeus, except narrow line on 

 apical middle and thin black line separating sides and raised part at base, 

 lower two-thirds of inner orbits broadly (this is separated from the clypeus 

 by a thin datk line), carina between antennae to clypeus, scape in front, 

 spot back of eyes near vertex, yellowish white; two large spots on pro- 

 notum, tegulae, small spot below tegulae, line on scutellum, postscutellum. 

 two large oval spots on metathorax, large spots on first abdominal segment 

 nearly meeting in middle, broad band on second to sixth (this band is 

 narrowed in the middle on the second, third, fourth segments), spots on 

 second, third, fourth and fifth ventral segments (those on second and third 

 uniting in middle)^ lemon-yellow ; legs, coxae, trochanters, basal half of 

 four anterior femora above, apex of posterior femora (deeper above), apex 



September, 1908 



