10 GEO. H. HORN, M. D. 



given in the tahle will enable it to be distinguished from any other 

 species. 



In the " Biologia" (vi, pt. 1, suppl. p. 90) Mr. Jaeoby quotes me 

 as stating that this species is identical with saginata. If I have ever 

 published such a statement the reference has entirely escaped me. 

 At all events I will now assert that the two species are not the same. 



Occurs in various parts of Oregon and California. 



S. politnia n. sp. — Form rather robust, deep blue, surface shining. Head 

 very indistinctly punctate ; disc of thorax almost absolutely smooth, a few coarse 

 punctures and wrinkles close to the lateral margin. Elytra with distinct strise 

 of fine not closely placed punctures, the first and second rows confused near the 

 scutellum, intervals wide, flat, with finer punctures distantly placed: humeral 

 spot oval, extending inward as far as the fourth stria, externally not covering 

 half of the epipleural lobe, the latter broadly rounded. Body beneath densely 

 finely punctured and cinereo-pubescent. Length .25 inch.; 6.25 mm. 



This species has a smoother and more shining surface than any 

 other in our fauna. The strife of ])unctures are also more regular, 

 excepting, probably, apicalis. Its form is more robust than any, 

 except the following species. 



Occurs in California near Monterey and Santa Barbara. 



S. speculifora n. sp. — Deep blue, feebly shining, the thorax more shin- 

 ing, humeral umboue purple-black polished. Head alutaceous, indistinctly 

 sparsely punctate. Thorax sparsely finely punctured on the disc, a little more 

 distinctly on the declivity and coarsely close to the side margin. Elytra rather 

 roughly punctate, the rows of rather coarse punctures somewhat confu.sed, espe- 

 cially near the scutellum, the intervals slightly convex and with distant smaller 

 punctures; humeral spot entirely wanting, in lieu thereof the umbone is smooth, 

 purple-black; epipleural lobe broadly rounded. Body beneath densely finely 

 punctured and cinereo-pubescent. Length .26 inch. ; 6 5 mm. 



An easily known species by the absence of the humeral red spot. 

 In form it resemh\es poUtula, but is more robust than any other spe- 

 cies. It cannot be suspected of being an accidental variety oi' saucia, 

 as the thorax is more distinctly punctate and the elytra far more 

 roughly sculptured. 



Occurs in Owen's Valley, California ; two specinjens. 



In the females of all the species the last ventral segment has an 

 oval and moderately deep fovea, which is smooth at bottom. The 

 same segment of the male is simple. 



MEOAL,0^iTOrai!<« Lac. 



This genus contains the largest species of the tribe. Three are 

 known to me from our fauna, all belonging to the s. g. Minturnia 

 as defined by Lacordaire, which may be distinguished in the following 

 manner: 



