Horn.] 414 [Sep. 19, 



Body beneath sparsely aud moderately finely punctured. Last ventral 

 segment with a small fovea made up of coarse confluent punctures. An- 

 terior tibiae with the outer apical angle prolonged, middle and hind tibiae 

 truncate. Length .82 inch ; 8 mm. 



Occurs in Nebraska, Colorado, New Mexico, Wyoming. 



S. in83qualis Say. Cure. p. 23 ; Am. Ent. edit. Lee. L, p. 291 ; con- 

 tractus Gyll., Schonh., Cure. IV., p. 953. 



Form robust, color black, upper surface with luteous acquired coat. 

 Rostrum three-fourths as long as thorax, slightly compressed, sparsely 

 punctured at bas~, finely canaliculate and with a slight fovea between 

 the eyes. Thorax constricted in front, longer than wide, oval, base less 

 arcuate, surface coarsely foveato- punctate with normally five smoother 

 spaces, one median entire line dilated in front of middle to a rhomboid 

 spot, two irregular sub-basal and two sub-apical spaces which may unite 

 in a sinuous line. Scutellum broadly channeled. Elytra scarcely longer 

 than the head and thorax, widest behind the base, rapidly narrowing to 

 apex, surface striate, striae with coarse, very distant punctures, intervals 

 flat, undulating, closely and coarsely punctured ; humeral prominence 

 and a slight tuberosity at the apex of the intervals 5-G-7 more shining. 

 Pygidium coarsely and densely punctured at apex. Body beneath black, 

 shining, coarsely but sparsely punctate. Tarsi piceous. Length .24 

 inch ; G mm. 



Occurs in the Gulf States. 



Group II. 

 The species of this group are few in number in our fauna, and are thus 

 distinguished : 



Body above red, with black spots varying in size and color... 13-punctatus 



Body above brownish, or piceous, irrorate pustulosus 



Body above entirely black, sub-opaque validus 



S. tredGCimpunetatus Illig. Schneid. Magaz. V., p. 613 ; Hbst. 

 Kaf. VI.. p. 10, pi. 60, fig. 5 ; Gyll. Schonh. IV., p. 898 ; cribarius, Fab. 

 Oliv. Ent., V. 83, p. 88, pi. 28, tig. 112, b; quinquepunctatus, Say. Am. 

 Ent., edit. Lee, p. 19, pi. 9; variabilis, Gyll. loc. cit., p. 899; anceps, 

 Gyll. loc. cit., p. 894. 



Many other synonyms are recognized in the catalogues, and many more 

 will doubtless be added after a little examination, but these are all which 

 have been made upon specimens from our fauna, and it is unnecessary to 

 mention others from Mexico southward. 



Body beneath black, pruinose, above red with black spots, five on the 

 thorax, and four on each elytron, arranged as follows : thorax with a 

 median elongate oval spot, two at the base, touching the margin or dis- 

 tant from it, two spots anteriorly forming a quadrangle with the basal 

 spots, elytral spots four on each, one behind the humeral prominence, 

 two median arranged transversely, one sub-apical, more or less trans- 



