NO. 1925. STUDIES TN THE SUPERPAMTLY ORYSSOTDEA—ROTIWER. 149 



one-fourth longer than the seventh, seventh and eighth subequal in 

 length; mesoscutum with two poorly defined longitudinal furrows, 

 the anterior portion between these furrows more finely sculptured 

 than the rest of the mesoscutum; scuteUum irregularly reticulate; 

 venation strong; hypopygidium as in figure 6a. Black; thorax, 

 propodeum, and legs, except when mentioned, ferruginous; antennas 

 piceous; spot on anterior femora, and all the tibise exteriorly white; 

 wings hyaline, strongly dusky below stigma; venation dark brown. 



Santa Cruz Mountains, California. 



Tyi^e.— Cat. No. 6845, U.S.N.M. 



This is a very distinct little species. Ashmead erroneously de- 

 scribed this as a male. His type, which is unique, is a female. 



(B) Second antennal joint half or less than half as long as the third ; no well defined 

 carina behind the eyes ; thorax black. 



(I) Seventh and eighth antennal joints subequal; second antennal joint half as 

 long as the third; abdomen black or with the three apical segments pale. 



ORYSSUS SAYII Westwood. 

 Oryssus sayii Westwood, Zool. Joum., vol. 5, 1835, p. 440. — Harris, Rept. 

 Ins. Mass. 1841, p. 394.— "Westwood, Thesa. Ent. Oxob. 1874, p. 120, pi. 22, 

 fig. 7. — Ceesson, Trans. Amer. Ent. Soc, vol. 8, 1880, p. 49. — Provancher, 

 Addit. CoiT. Fauna Ent. Can. Hym., 1889, p. 27. — Harrington, Can. Ent., 

 vol. 18, 1886, p. 30; vol. 19, 1887, p. 81; vol. 19, 1887, p. 239.— Packard, 

 Rept. U. S. Ent. Comm., 1890, p. 383.— Dalla Torre, Cat. Hym., 1894, 

 p. 380.— Bradley, Trans. Amer. Ent. Soc, 1901, p. 318.— Konow, Zeit. 

 Hym. Dept., vol. 5, 1905, p. 182 (358). 



The original description by Westwood is as follows: 



9 : Niger; capite thoraceque punctatis abdomine subtilius punctato; vertice, ad 

 regionem ocellorum, tuberculato; facie lineis duabus minutis abbreviatis albis inter 

 oculos ad marginem inferiorum; labro albido; antennis nigris, apice articuli 3tii 

 articulisque 4to et 5to supra albo-notatis; pedibus nigris, apice femorum lineolaque 

 Bupra tibial! albis; alis dimidio basali hyalinis, dimidio apicali fuscis et ad costam 

 obscurioribus, macula parva substigmaticali apiceque ipso hyalinis, stigmati nigro. 



Long. Corp. 9 lin- 7|-. Exp. alar. lin. 11. 



Habitat, in America boreali "New Harmony." 



In Mus. nostr. Dom. G. B. Sowerby communicavit. 



Note. — In the Enclopedia Methodique, vol. 8, p. 561, a second species of this remark- 

 able genus was added by Latreille under the name of Or. unicolor, of which both sexes 

 had been captured in the Bois de Boulogne, near Paris. Its characters very much 

 resemble those of the species above described, except that Or. unicolor is only half 

 the size of Or. coronatus, whereas my new species is somewhat larger than that insect. 



Westwood's (1874) figure of the antennae places this species in group 

 B I. According to his figure the fourth and fifth antennal joints of 

 the female are subequal. 



The following description is of males which have been determined 

 as sayii: 



Male. — Length, 11.5 mm. Clypeus gently rounded, not crenulate 

 laterally, with a deep median notch; front sliining, coarsely irregularly 

 reticulate; lateral ocelli situated on a line drawn between the third 

 and fourth tubercles; postocellar line distinctly shorter than the 

 intraorbital line; third antennal joint distinctly shorter than the 



