314 A. L. MELANDER. 



who has been an enthusiastic observer of the local fauna of Central 

 Texas for many years. 



The introductory characters in combination tersely indicate the 

 systematic position of this species, which seems to lie between halcy- 

 one Fox and myrrha Fox, combining the characteristics of the two 

 species. 



Types in the collections of Mr. Birkman and of the writer. 



74. Ulutilla naiiiilu Dalla Torre (124). 



Occurs rarely at Austin, Texas. 



Group anthophorce. 



75. % jtliitilla concolor Cresson (127). 



California (M. C. Z.), Texas (Chicago Acad. Sci.). 



Mr. Cockerell has sent a large series of what is apparently this 

 species, collected at La Cueva, Organ Mountains (altitude 5500 ft.), 

 September 4th ; at Mesilla Park, June 8th ; and at Arrogo, near 

 La Luz, August 23d, New Mexico. All the specimens were taken 

 at light. 



The shape of the petiole of the abdomen is subject to variation, 

 but as the forms otherwise grade into each other, we can be certain 

 that all belong to a single species. Some specimens have the petiole 

 subnodose and punctate, as in the imperialis group, while others 

 have the first and second segments of the abdomen nearly sessile, 

 the first being almost impunctate. 



76. Jlutilla hamata sp. uov. 



Male. Eufo testaceous. Head rounded behind, sparsely punctulate, mesouoturu 

 deeply and closely punctured, metanotuiu reticulate over all, mesosternum with 

 two transverse obliquely pointed teeth, petiole impunctate, sessile with the 

 impunctate second segment, two submarginals 



Eufotestaceous; rather slender. Head broadly rounded and produced behind 

 the eyes, nearly impunctate and very sparsely hairy; ocelli moderately large, 

 the hind ones a little further from each other than from the eyes. Midway be- 

 tween the front ocellus and the base of the antennae is a punctiform depression 

 which extends forward to the base of the clypeus as a narrow groove ending in 

 the transverse basal ridges of the clypeus; mandibles stout, blackened at the 

 tips; antennae concolorous with the body, short, the scape not paler, short and 

 stout, punctured and provided with very short and sparse bristle-like hairs- 

 Prothorax eonfluently rugosely punctate; mesouotum with close deep punctures, 

 the grooves but slightly abbreviated in front; scutellum contiguously and deeply 

 punctured ; metathorax moderately reticulated over all ; punctures of meso- 

 pleurse becoming broader towards the coxae; mesosternum with two strong 



