214 THE CANADIAN ENTOMOLOGIST 



and almost attaining the internal subhumeral which parallels the posterior 

 half of the first dorsal; external subhumeral entirely distinct from the marginal. 

 Pygidia alutaceous, closely punctate, with a slight tendency toward substrigosity, 

 especially at apex. Prosternum moderately convex at summit, striae long, 

 parallel, abbreviated in front. First ventral plate concave at middle and 

 with a small tubercle near its posterior margin; last ventral with a transverse 

 flattened tumidity which is obtusely prominent at its lateral limits. 



Length (to elytral apex) 3.15 mm. Width 2.6 mm. 



Aweme, Manitoba. A single example sent by Mr. Norman Criddle. 

 This species is to be placed near obscuriis of Horn's Group IV. It is at once 

 separable from any described species of the group by its rugose front and strigose 

 sides of the pronotum. The remarkable ventral modifications are without 

 doubt sexual in nature. 



Saprinus castanipennis, sp. nov. (Horn's Group IV). 



Broadly oblong-oval, black, elytra castaneous, legs rufous, surface polished 

 throughout. Head finely, rather closely, punctate. Prothorax and elytra 

 punctate over the entire surface, sparsely finely so medially, the punctures 

 becoming much coarser and closer at the sides of the thorax where they are 

 separated by less than their Qwn diameters, also toward the elytral apex where 

 they are of the same size as at the sides of the thorax, but separated on the average 

 by their own di;ameters. Prothorax a little less than twice as wide as long, 

 sides rather strongly convergent and straight in basal two-thirds. Elytral 

 stria? strong, rather feebly punctate, first attaining the apical fourth, second and 

 third nearly as long, fourth nearly reaching the apical third, strongly arched at 

 base and joining the entire sutural. Pygidia rather densely punctate. Pro- 

 sternum moderately convex, the striae parallel and terminating about one-fourth 

 from the apex. Anterior tibia? multispinulose. 



Length 2.3 mm. to the elytral apex, 2.5 mm. over all; width 1.85 mm. 



Aweme, Manitoba, 21-VI-1918, (Criddle). 



Judging from the description this species is nearest Casey's laramiensis, 

 which is, however, a much larger insect (3.-3.4 mm.) with darker legs and with 

 the thoracic punctuation "only slightly closer laterally." 



wSaprinus iris, sp. nov. (Horn's Group VIII). 



Not very broadly oval, polished areas with viridi-aeneo-cupreous lustre, 

 the dull punctured areas bluish, legs dark rufo-piceous. Head smooth, a feeble 

 transverse impressed line above the frontal margin. Prothorax nearly twice 

 as wide as long, sides moderately converging and feebly arcuate, surface not 

 densely strigoso-punctate at sides and in front, leaving a triangular discal 

 polished impunctate area; side margins very narrowly smooth, base with the 

 usual coarse marginal punctures. Elytra rather more than one-fourth wider 

 than long; striae finely punctate, the first nearly as long as the elytra and curved 

 at its extremity, second three-fourths as long as the els'tra, the third and fourth 

 slightly passing the middle; fourth hooked at base, sutural interrupted widely 

 at base in the type, feebly joining the fourth stria in a second specimen; oblique 

 humeral fine and nearly parallel with the first stria; internal subhumeral occupy- 

 ing the middle third of the eh^tra, with basal appendix nearly joining it to the 

 oblique humeral; external subhumeral not distinct from the marginal; disk 

 rather finely, not densely punctate in somewhat less than apical half, the punc- 



