600 BFr. T. D. A. Cockerell — Descriptions and 



EXPLANATION OF PLATE X. 



Lepidocoleus (jrayce, sp. n. 



Upper Ordovician, Lower Ardniillan series, Prummuck gr'Mip, 



Mudstones: Thraive Gleu, Girvan, Ayrshire. 



Fig. \. Side-view of a shell with the upper and lower extremities 

 broken away, x -'5 diam. Ilolotypo, B..M., In. 21648. 



Fig. 2. View from " ti.\:ed " margin of same, x -^ diam. 



Fig. 3. Enlarged view of the two lowermost plates of same, showing 

 details of ornament, x 10 diam. 



Fig. 4. Diagrammatic transverse section, x diam. 



Fig. 5. Side-view of another shell, showing roanded bas.il extremity. 

 X 3 diam. B.M., In. 21649. 



Scalpellum [Arcoscalpellum) fossula, Darwin. 

 Upper Senouian, Actiiiocamax quadrat nx-/,oiu^: East Ilarnham, 

 near Salisbury, Wilts. 

 Fig. 6. Left side of an almost complete capitulum. The rostrum is seen 

 on the inside of the displaced right scutum, aud the inner 

 surface of the displaced right rostral latus is seen at the base of 

 the capitulum. X 3 diam. B.M., In. 21559. 



Scalpellum { Arcoscalpellum) angustatnm (Geinitz). 



Turonian {Rhynchonella cuvieri or Terebratuliua-zowe) : Southeram, 



Lewes, Sussex. 



Fig. 7. Carina. Outer view. Ilolotype of aS". angustum (Dixon), Geol. 



Sussex, pi. xxviii. fig. 9. X 4 diam. Brighton Museum. 

 Fig. 8. Side-view of same. 



LXXX. — Descriptions and Records of Bees. — XCIV. 

 By T. D. A. Cockerell, University of Colorado. 



Dianthidium sinapinum flavatiim, subsp. u. 



Anthidium Jlavatum, Nurse MS. 



$ (type). — Like D. sinapinum, Ckll., from Karachi, but 

 ocelli on a black patch, and a black stripe from each lateral 

 ocellus to antenna ; mesothoiax with a median l)hick stripe, 

 ending posteriorly in a large black patch which includes 

 extreme base of scutellum ; halfway between middle and 

 sides of mesothorax are broad black bands, not extending 

 quite as far anteriorly as level of anterior margins of tegulae; 

 margins of scutellum, on each side of the middle, less 

 convex. Abdomen with a median black stripe, and extreme 

 bases of segments black, giving a dusky effect to the trans- 

 lucent hind margins covering them. 



J . — A large quadrate black patch occupying front, limited 

 above by a yellow occipital baud, and at sides by narrow 



