Mr. 11. E. Turner on Foasonal Ilymenoptera. 393 



Alyxoderma platyacanthiim rhomaleum, subsp. n. 



DifferinfT from ^f. phxtyacanthum * (C'lark) in having^ 

 constantly Iji'oader and sli;i^litly shorter rays, sli<^litly lar^jcr 

 disk, nincli lioavier al)actinal and inar;^inal spines, sli<^litly 

 sliorter and decidedly heavier actinolateral spines, and shoiter 

 abactinal pedicellarife. U=1()0 nun., r= 12'0 mtn., R = 8r, 

 breadtli of ray at base 13 mm. ; at a little beyond base 

 1;V5 mm. Disk elevated, dome-shaped, rays very gradually 

 tapered, but not attenuate di.sfallv. 



Type-locaUty.^0^ Oregon (43^ 46' N., 124° 57' W.), 

 277 fathoms, grey sand; bottom temperature 42*2° Fahr. 



Known from off Oregon and Central California, 277 to 

 29G fathoms, grey sand ; 41-8° to 42-2° Fahr. 



XXXVrr. — Notes on Fossorial Flymenoptera. — XXXVII. On 

 some SpheciniB in the Drilisli Museum. By ROWLAND E. 

 Turner, F.Z.S., F.E.S. 



Genus Sceliphron. 

 SceUphron masaicum, sp. n. 



$. Xigra, nij^ro-pilosa ; petiolo, tertio apicali nigro, trochanteribus 

 posticis, femoribus posticis dimidio basali, tibiis posticis tertio 

 basali, metatarso postico basi nigro, tursisque posticis articulo 

 secundo tiavis ; alis subhyalinia, tiavo leviter sutiusis, vonis 

 nigris, ahs anticis apice angustissime infumatis. 

 Long. 20-21 mm. 



? . CIjpcus very distinctly bilobed at the apex, closely 

 punctured and clothed with long black haiis, which also 

 extend over the whole head and thorax ; on eacli side of the 

 bilobed central portion of the a[)ical margin is a small tooth ; 

 mandibles bidontate at the apex, the outer tooth the longest. 

 Eyes distinctly nearer to each other on the vertex than on 

 the clypeus ; second joint of the tlagellnm a little longer 

 than the first and third ccnnbin^d. I'ronotuni deeply longi- 

 tudinally grooved in the midille, finely punctured ; meso- 

 notum rugulose, scutelluni and post.scutollum clostdy longitu- 

 dinally striated. Median segment witii a deep and broad 



• Zoroaxter platt/arant/m-i, H. L. Clurk, Bull. Amer. Mas. Nut. Hist, 

 vol. xxxii., July 9, 1013, p. 19U, pi. xliv. figs. 1 & 2. 



