208 CALIFORNIA ACADEMY OF SCIENCES. 



Epistoma bisiimate, the middle tooth much smaller than the outer oues, but 

 always distinct though somewhat varying in prominence; front not very 

 strongly transversely impressed opposite the anterior margin of the eyes, 

 the impression interrupted at middle by a short fine carina; vertex smooth. 

 Prothorax transversely globose, very slightly wider posteriorly. Elytra 

 just perceptibly wider than the prothorax, a little more elongate than in 

 D. globulosus; base distinctly margined, strire fine, very slightly abbrevi- 

 ated at base, gradually finer posteriorly, and almost completely effaced at 

 apex; punctures of strife fine and somewhat distant, becoming obsolete 

 not far behind the middle; third interspace with a single setigerous punc- 

 ture near the base. Terminal process of the anterior tib;e only slightly 

 curved, and a little shorter than the subapical interior spur; outer mar- 

 gin with a moderate siibapical tooth and a second fainter one above it. 

 Length, 2.5 mm. 



Habitat: — Pomona, San Bernai'dino, Riverside. 



^ Rather smaller than any other species in our fauna 

 and distinguishable from all by the unipunetate third 

 interval of the elytra. 



Some years ago in a letter from a friend, Mr. F. 

 Blanchard of Tyngsboro, Mass., the writer's attention was 

 called to the presence of two small teeth in the clypeal 

 emargination of certain of those species of Dyschirius 

 in which the elytra are pale at tip. Mr. Blanchard at 

 that time expressed a doubt as to the propriety of refer- 

 ring all eastern specimens to D. hcernorrhoidalis^ and a 

 recent comparison of my material with the types of 

 D. terminatus and D. analis, and presumably of authen- 

 tic specimens of D. hceniorrhoidalis, leads me to believe 

 that we may with reasonable certainty add two species 

 to the three now listed. All these except D. terininatus 

 have the clypeal emargination bidentate, and are, in 

 fact, so closely allied in all respects except those men- 

 tioned in the table below that a more detailed descrip- 

 tion of the new forms is unnecessary. There are 

 certain differences in the form of the prothorax, which, 

 however, are not so easily appreciable as the characters 



