^gQ PSYCHE [Oct.-Dec- 



12. Nemotelus trinotatus, sp. nov. 



Female. Head long, flat from the tip to the strongly declivous occiput, conical, rather 

 acute, no distinction between front and facial protuberance; totally black, shining, pubes- 

 cence short appressed sericeous golden, moderately sparse; antennae black, inserted midway 

 between eves and tip of face; proboscis long, black, geniculate at the middle, the basal 

 half membranous behind, the outer half curved. Thorax black with a very faint greenish 

 tinge, its pubescence like that of the head but denser laterally, humeral mark small ateral 

 line very narrow. Abdomen black, not greenish, shining, bare, the first segmen yellovvish 

 in front, the spot broadest medially, second, third, and fourth segments each with a median 

 triangular white mark broadest posteriorly, that of the fourth segment continuous with the 

 vellow hind margin, the entire abdomen margined with a white line broadest caudally and 

 becoming attenuated toward the base of the abdomen; venter black shining sparsely pubes- 

 cent, immaculate but with a narrow whitish outline. The markings of the first two seg- 

 ments of abdomen sometimes obliterated. Femora black except the yellowish ip> POHteno. 

 tibiae blackish in the middle merging into yellow at the base and apeK,_tarsi light yellow. 

 Halteres white. Wings white, veins concolorous, third vein furcate at tip, fourth posterio, 

 vein arising at basal third of underside of the rather large discal cell. 



^/«/r difters from the female as follows : facial protuberance shorter and more slender, 

 front with two contiguous white spots, antennae inserted at the base of the P-tuberance ; 

 eyes contiguous and slightly impressed along the line of contiguity. Hairs of thorax less 

 sericeous, silvery. Abdomen wholly white. Hind tibiae with a black spot. 



Length $ 3.5 mm.; 9 4-S '^^i^^- . ^, , 



Described from numerous specimens of both sexes collected durmg May and 

 June at Austin, Texa^, by Mr. C. T. Brues and the writer. The species was abun- 

 dant during the first weeks of June on the flowers of Sapindus, the ' wild china- 



berry tree." 



Profile of head of male and female figured on plate. 



13. Nemotelus flavicornis Johnson. 



Nemotelus flavicornis Johnson, Proc. acad. nat. sci. Phila., 1S94, p. 272. (0 

 Male. Face and vertical triangle black, shining. Facial protuberance prominent, con- 

 ical • antennae yellow. Facets of the upper half of the eye double the size of those ot the 

 lower. Thorax and scutellum greenish black, shining; humeri, and a narrow me from 

 there to the base of the wings, yellow. Abdomen yellow, with a small black subtnanguar 

 spot in the center of the fourth and fifth segments ; venter yellow. Legs yellow poster o 

 femora and tibiae with a medial band of dark brown. Wings hyaline, whitish, d.scal cell 

 emits four veins. 



Length 2^ mm. 



Kingston, Jamaica. <') 



Mr. Johnson writes that the third vein is simple. 



