122 H. C. FALL. 



are clothed with pale yellowish recumbent squarniform hairs; there is also a 

 small rounded spot of dense white appressed hairs on the fourth interspace before 

 the middle, a smaller one just behind the middle and nearer the suture, and a 

 little posterior to this a transverse spot on intervals 5-8. Metasternum and abdo- 

 men sparsely, finely punctate; abdomen sparsely pubescent, metasternum, espe- 

 cially the side pieces, more thickly so. Length 2.8 mm. 



Brownsville, Texas. 



I have seen only two males of this pretty species. It is a some- 

 what aberrant member of the interruptus type, distinguishable at 

 once by its strongly compresso-carinate prothorax. 



17. I*, prolixus n.sp. — Similar to quadrimaculatus in all respects, except the 

 following : The eyes are even slightly larger and more prominent, the prothorax 

 distinctly prominent at middle before the constriction, the dark area of the elytra 

 paler and much less sharply defined. Length 3.5 mm. 



Texas. Two males, one of them collected by Belfrage. 



18. P. quadrimaculatus Melsh .—Hale. Elongate, nearly parallel ; head, 

 thorax and lower surface rufopiceous, antennae and legs pale rufous, elytra rufous, 

 each with a large black patch occupying the middle half, attaining the side mar- 

 gin but not the suture, its posterior outline transverse, its anterior margin extend- 

 ing obliquely forward and outward to a point just behind the humerus. Eyes 

 very large and much more prominent than the sides of the prothorax, the front 

 between them very little wider than their vertical diameter. Antennas subequal 

 in length to the body, slender, the individual joints filiform, the outer ones fully 

 four times as long as wide. Prothorax granulate, confusedly hirsute, the hairs 

 varying in color from luteous to brown ; disk not prominent at middle before the 

 constriction. Elytra more than twice as wide as the prothorax and about four 

 times as long; interspaces wider than the striae, each with a row of setae varying 

 but slightly in length, the longer ones about equal to the distance from the suture 

 to the second stria, inclined about 45 degrees; seta? of strial punctures a little 

 shorter and more inclined. The rufous areas of the elytra are clothed with re- 

 cumbent, yellowish, squamiform hairs, these being condensed and paler in color 

 along the margins of the black area, elsewhere rather sparse. Metasternum as 

 long as the second and third ventral segments united. Legs long and slender; 

 first joint of hind tarsus nearly as long as the three following. Length 3-3i mm. 



Massachusetts, Pennsylvania, District of Columbia. 



I have examined at Cambridge what is, in all probability, Mel- 

 sheimer's type. It is a male and precisely similar to a male from 

 the District of Columbia now before me. The species seems to be 

 singularly rare in collections, and I find in the very large material 

 sent me for study only this single male (Nat. Mus. collection) and a 

 female which I place with it, taken by Mr. Blanchard at Tyngs 

 boro, Mass., more than thirty years ago, and for which he has not 

 since found a mate. This female differs from the male described 



