530 Coleopterological Notices, V. 



the merest trace; external apical angles moderately rouDcled, the 

 apex nearly three-fourths of the maximum width. Mes-epimera 

 very short, the suture feeble ; met-episternal suture distinctly ob- 

 lique. Basal joint of the hind tarsi as long- as the next three. 

 Length 1.5 mm. ; width 1.0 mm. 



Arizona (Yuma). The pale coloration, short and broad form 

 and short mes-epimera are features which render this species 

 abundantly distinct. The first ventral segment is more strongly 

 punctate in the middle toward base in one of the specimens before 

 me, which is probably the male. 



S. desertorilHl n. sp. — Rather broadly oval, black, highly polished; 

 elytra gradually somewhat pale toward apex ; antennae, legs and abdomen 

 in great part pale ; head and pronotum excessively minutely and obsoletely 

 punctulate ; elytra finely and sparsely but distinctly punctate ; metasteninm 

 obsoletely so, the first ventral segment remotely but more distinctly. Head 

 moderate ; eyes large, separated by one-half more than their own width ; 

 antennae rather longer than the head and prothorax, the third joint longer 

 than wide, expanded at apex, almost as long as the fourth, which is small, 

 not quite twice as long as wide, fifth rather longer than the preceding two 

 combined, though scarcely moi-e than three times as long as wide, sixth very 

 long, feebly dilated within, fully as long as the three preceding, scarcely as 

 long as the seventh, which is strongly dilated and arcuate within. Prothorax 

 rather long, about one-half wider than long, the apex barely two-fifths as wide 

 as the base ; S(;utellar lobe moderate. Scutellum extremely minute. Elytra 

 not quite as long as wide, two-thirds longer than the prothorax, a little wider 

 at basal fourth than at base ; apex a little more than two-thirds the maximum 

 width ; apical angles rather narrowly rounded ; sutural stria fine, the basal 

 extending rather beyond the middle. Mes-epimera short, extending one-third 

 to the coxae, the suture strong ; met-episternal suture fine, oblique. Legs 

 slender ; hind tarsi a little shorter than the tibiae, the first joint not quite as 

 long as the next three ; second but slightly longer than the third ; fourth 

 much shorter. Length 1.9-2.0 mm. ; width 1.3-1.4. 



Arizona (Williams) ; Texas (El Paso). Mr. Wickham. 



This species is quite distinct in antennal structure, somewhat 

 shorter elytra and abbreviated mes-epimera. It was obtained 

 apparently in some abundance. 



S. inconspicua n. sp. — Somewhat narrowly oval, highly polished, 

 black, the elytral apex not paler ; under surface rufo-piceous ; legs and 

 antennae still paler ; head and pronotum impunctate ; elytra finely, sparsely 

 punctate, the punctures becoming almost obsolete toward base. Head moder- 

 ate ; eyes separated by one-half more than their own width ; antennae with 

 the third joint small, triangular, scarcely longer than wide, about one-half as 

 long as the fourth, the latter tiiree times as long as wide, fiftli longer, fully 



