T. D. A. COCKERELL. 159 



on outer apical margin thei-e is a rounded notch containing a little boss, looking 

 like a rivet joining first and second segments; the segments from the second to 

 the fourth diminish gradually in size, as usual ; the hind margin of the tarsus 

 presents a long dense fringe of white hairs, dark fuscous at the ends, or rather 

 dark fuscous hairs growing behind the white ones overtip them and produce the 

 effect described ; ridge beneath first joint and joints 2-4 more or less beneath> 

 with dark reddish hairs; tip of claw-joint black at tips and strongly bifid: the 

 other tarsi slender and ordinary, basal joint with a black stripe behind. Abdo- 

 men fairly long, subparallel, shining, but closely punctured ; first segment with 

 base deejdy and broadly excavate, sides and apex frined with long whitish hairs; 

 hind margins of segmeiits 2-5 with very uniform, narrow, snow-white hair bands ; 

 seen from above the remainder of these segments seems nude, but seen from the 

 side a thin pubescence is evident, ochraceous tinged on 2 and 3, darker on 4, black 

 on 5 ; apical segment without appressed pubescence, broadly but not deeply emar- 

 ginate, the eniargination with a low prominence in its centre ; a variable number, 

 up to five, small teeth laterad of the eniargination ; ventral segments with thin 

 bands of long white hairs. 



Hab. — On flowers of Sidalcea malv<eflora at Mr. Clark Rodger's 

 ranch, Lone Monntain, Jnly 7 ; and at flowers of golden mint 

 Deming, New Mex., July 9, 1896. 



It most resembles 3f. Candida Sm., fiorkhoia Rob., iiitegm, Cr. and 

 albitarsis Cr. Mr. Fox observes that it is " of the polllcarla, etc. 

 group." [with anterior tarsi of % flattened. — W. J. F.] 



(24. J Ceratina aniabilis n. sp. ?. — Length 10.5-11.5 mm. Head and 

 thorax a brilliant Prussian green. Abdomen bright carmine. Legs black, the 

 anterior femora bright green behind ; an elongate mark on middle of clypeus, 

 bulbous below, a spot on each extreme side of clypeus, a spot on end of anterior 

 femora, and a short stripe on anterior tibise cream color; there is no light color 

 on labrum or tubercles; mandibles wholly black, strongly tridentate at tips, the 

 middle tooth considerably the longest; face with large confluent punctures; front 

 above antennae more or less dark aeneous; antennae short, wholly dark; cheeks 

 with a broad band of punctures running down the middle, leaving a narrow, 

 smooth band just behind the eyes; mesothorax strongly punctured, with a me- 

 dian, dark feueous, impunctate area; longitudinal impressed lines as in earimia ; 

 scutellum with four small, round, dark purple spots, two on disc and one on each 

 extreme side; base of metathorax granular; tegulae transparent, shiniug, orange 

 testaceous. Wings smoky, quite dark, nervures and stigma piceous; marginal 

 cell somewhat shorter, comparatively, than in nautlana. In nautlana the radial 

 nervure, from the stigma to the junction with the third transversocubital, is dis- 

 tinctly shorter than the part beyond, whereas in am.abilis the reverse is the case, 

 though not so conspicuously. Legs with thin, pale grayish pubescence, orange 

 rufous on inner side of tarsi ; spurs of hind tibiae large, dark I'eddish piceous, the 

 anterior one shorter and hooked at the end. Abdomen strongly, but not so very 

 closely punctured ; first segment, except hind margin, olive-green ; last two seg- 

 ments rugose. 



Hab. — San Rafael, Vera Cruz, March 14 on plant No. 11 ; ^larch 

 16 on plant No. 14 (Ipomcea). Paso de Telaya, Vera Cruz, jNIarch 



TRANS. AM. ENT. SOC. XXIV. JUNE. 1897 



