STAPHYLINID.E 447 



conspicuous than usual; sixth ventral with an evenly rounded, 

 gradually formed sinus, a third the total width and four or five times 

 as wide as deep. Length (cf ) 7.2 mm.; width 1.45 mm. California 

 (San Diego), Dunn jacobianus n. sp. 



Body (cf ) larger in size, the upper surface shining, black, nowhere metallic, 

 the elytra bright red; head quadrate, wider than long, the eyes 

 scarcely at all convex, at more than twice their length from the base; 

 surface with the lateral puncftires very coarse, moderately numerous; 

 mandibles arcuate except basally; antennae short, very thick, the 

 outer joints transverse, the third much longer than the second; 

 prothorax shorter and much narrower than the head, nearly as long 

 as wide, the sides evenly, rather strongly arcuate and rather strongly 

 converging from apex to base, the basal angles very broadly rounded; 

 discal series of three moderate punctures not extending behind the 

 middle of the disk, except in cases of an adventitious additional punc- 

 ture; scutellum finely, extremely densely punctate; elytra subquad- 

 rate, much longer and wider than the prothorax, as wide as the head, 

 the punctures rather strong but well separated; there are also a 

 number of scattered foveolae bearing erect setae throughout the 

 surface; abdomen with the punctures remote, closer basally and 

 laterally on each tergite; sixth ventral feebly sinuato-truncate medi- 

 ally at apex. Length (ef ) 7-9-9-5 mm.; width 1.6-1.9 mm. Texas 

 (Brownsville), Wickham texanus n. sp. 



5 Gular sutures separating and diverging anteriorly from a point on 

 the under surface of the head exactly midway between the base and 

 the mentum. Body (cf ) small in size, shining, the upper and under 

 surfaces and legs throughout bright testaceous; head, pronotum and 

 last two ventrals above and beneath black; head moderate, wider than 

 long, the eyes convex, at only one-half more than their length from 

 the base; mandibles straight, stout, arcuate and thin apically, the 

 outer sulcus broad, its lower margin subprominent basally; antennae 

 stout, blackish, the outer joints transverse; discal punctures laterally 

 moderate in size and remote; prothorax slightly longer than wide, a 

 little narrower than the head, the sides feebly converging from the 

 apical arcuation to the base and nearly straight, the base subcircular; 

 series having five or six nearly equidistant and rather small punc- 

 tures, extending far behind the middle; scutellum unusually short 

 and with only a few small punctures; elytra quadrate, very much 

 wider but not distinctly longer than the prothorax, the punctures 

 small and sparse; scattered setae not evident; abdomen finely, 

 sparsely punctate; sixth ventral with a broadly and evenly rounded, 

 gradually formed sinus, about a third the width and shallow. Length 

 (cf) 7.0 mm.; width 1.55 mm. Arizona (locality and collector 

 unknown) moquinus Csy. 



Gular suture bifurcating as usual only at the oral slope 6 



6 Coloration throughout above and beneath as in moquinus, the last 

 two abdominal segments abruptly black; surface very shining; head 

 (cf ) transverse, the eyes barely convex and at scarcely less than twice 

 their length from the base, the lateral punctures unevenly spaced and 

 unequal in size, the anterior canaliculation distinct; mandibles as in 



