D' seripfionf and l\ecor(/i of li es. 17i) 



on tliat of Steiiimami :ii\tl Welter (Veili. \\v. lllieiiil;unl, 

 IIUO, p. 1), would l»c as follows : — 



Family Ph.aretronid», Zittel *. — Iletoroccela with spicules united 

 into bundles jtnJ tibres. (Tuaiug-fork spicules often present.) 



Subfamily 1. DialytlvJ!, RautT. — Spicules not cemented. (Lela- 

 pia, Kebira.) 



Subfamily 2. Piiarktrontdje, Steinmann.— Spicule-bundles ce- 

 mented into solid anastomosing fibres. 



Subfamily 3. Lituo.vix.e, Doderlein. — Anastomosing fibres formed 

 of i-rayed spicules cemented together. 



Subfamily 4. Ml'iiRAYONix.E, K. — Fibres of m lin skeleton 

 formed of Civlcareous substance (? cement), without an axial 

 core of spicules. 



XIX. — Descriptions and Records of Bees. — XXXVII. f 

 jSy T. D. A. COCKERELL, University of Colorado. 



Dianthidium sinapinum, sp. n. 



$ . — Length about 8 mm. 



Compact, light mustard-yellow, with black and pale dull 

 ferruginous markings ; head, thorax, and abdomen densely 

 and strongly punctured ; head large ; eyes pale olivaceous ; 

 mandibles with the cutting-edge broad, dark brown, having 

 only the apical tooth and a rather poorly developed second 

 one ; clypeus quadrate, its lower margin denticulate ; scape 

 yellow ; ttagellum ferruginous, the apical two-thirds dusky, 

 the end of the last segment blackish ; ©cellar region black, 

 sending a broad blat k stripe downward to each antennal 

 socket, or these black markings may be evanescent and 

 largely replaced by pale reddish ; upper part of clypeus and 

 sides of face sometimes stained with reddish ; mesothorax 

 ■with a broad median black band, expanding po;>teriorly, and 

 two broad sublateral ones, ending in front at level of front 

 of tegulse, or these bands may be narrower and broadly 

 edged with ferruginous ; hair of face, sides of thorax, and 

 ventral scopa pure shining white; anterior margin of meso- 

 thorax with appressed white hair, the rest with scanty 



* A writer in 'Nature' (Jan. 12, 1911, p. 345) objects to the use of 

 the term Pharetronid:« on the ground that there is no genus Fharetron. 



t An error occurs in part xxxv. (' Ai nals,' 1911, vii. p. 311) : Sigiri is 

 in Ceylon, not in N.W. Inc ii. 



12^ 



