HARRY SCOTT SMITH. 121 



Described from a unique male collected at Acapulco, Mexico. 

 Dedicated to Mr. C. F. Baker, from whom it was received, and 

 wlio collected the type. 



Ceratina acaiitha Provaucher, Nat. Can., Vol. xxii (Dec, 1895), p. 190, 9 . 

 Synon. C. submaritima Cockerell, Proc. Acad. Nat. Sci. Phil. (Sept., 18971, 

 p. 352. ^ , 9 . 



Through the kindness of Abbe V. A. Huard, curator of the Pro- 

 vancher collection, I have examined the type of C. acantha, and 

 find it identical with C. sitbmaritima Cockerel), 9 > hence the former 

 name holds by virtue of priority. 



Oratina diodoiita n. sp. 



%. Leugth 3.5-5 mm. — Body sliining, in general appearance somewbat like 

 C. nanida Ckll., but smaller and of a more brassy color. Mesothorax sometimes 

 with a tinge of purplish on the disk. Antennse dark brown. Face much more 

 coarsely punctured than in bakeri, clypeus with a large creamy-white inverted 

 T-shaped mark, the three arms approximately equal, anterior margin darker. 

 Lower side of face with a white dot or triangular mark on each side of clypeus. 

 Labrum entirely white, but for a black dot on each side. Mandibles black, an- 

 teriorly with a heavy white border. Occiput more finely punctured than face, 

 cheeks almost impunctate. Mesothorax finely punctured in front, with the usual 

 impressed lines, almost impunctate on the disk. Scutellum finely punctured, 

 postscutellum extremely so. Superior face of metathorax finely rugose, posterior 

 face with fine punctures, smooth beneath, lateral faces similar. Pleura coarsely 

 punctured like the face. First abdominal segment almost impunctate, next two 

 finely punctured, sparsely so on the disk, remaining segments rugose, fringed 

 with a few light hairs. Apical segment broad, but with two small teeth medially. 

 Femora and tibise green, with whitish pubescence, tarsi testaceous. Tubercles 

 white. Wings hyaline, strongly iridescent. 



9. Differs from the male by the more sparsely punctured face and occiput, 

 the clypeal marking is merely an oblong mark, and the mesothorax is more 

 sparsely punctured. 



Described from numerous specimens from Fedor, Lee County, 

 Texas, February 24th to April 27th, Rev. G. Birkmann, collector. 

 The female of this species is difficult to separate from the female 

 nanida, but differs in the more brassy color, smaller size and more 

 iridescent wings. 



Ceratina metallica n. sp. 



% . Length 5-6 mm. — Body entirely brassy-green, shining. Clypeus almost 

 entirely white, the three arms of the clypeal marks about equal. Face coarsely 

 and quite densely punctured, clypeus with numerous irregular indentations. 

 Labrum with a quadrate white spot, maudibles black. Cheeks with distinct, 

 well separated punctures, occiput with punctures close together. Mesothorax 

 closely punctured, excepting on the disk, and with five longitudinally impressed 



TRANS. AM. ENT. SOC. XXXIII. (16) APRIL, 1907. 



