E. T. CRESSON, JR. 
339 
fourth sejiment nearly twice as long as third. Legs rather stool ; fore tihiae 
noticeably flattened; anterior extensor surface of middle and hind tibiae 
silvery; lemoral spines strong and numerous; the proximal one separated, 
very stout and more obliquely inclined than the others (fig. 7). Second 
costal section of wings twice as long as third. Length. — 2..’) mm. 
Type—d'; ('tichi, Costa Kica, IVIarcli 7, 1910, (P. P. Calv(M l ; 
beaches on Ijack channel of Pio Peventazon), lA. X. S. P., Xo 
6134]. 
Paraiype. — 1 ; topotypical. 
Ochtheroidea melanderi new species (Plate XX, figures 0, 
This species, althonsh sng-gesting ffimilis in many rc'sjH'cts, 
is evidently very distinct, and will be readily recognized by 
the characters given l)elow. 
Resembling siniilis, but less shining. Facial i)its shallow and not trans- 
verse (fig. h). Apical bristles of scutellum hardly long('r than the setulae 
or marginal hairs. Fore femora with only minute flexor spines (fig. (i) in the 
male, which are hardly discernil)le in the female. Second vein long, so that 
the second costal section is at least three times as long as third. 
Type. — d'; Stanford University, Califoi’iiia, July lo, (A. b. 
Alelandcr), [University of Washington C'ollcction]. 
Paratypes. — 4 (T, 3 9 ; topotypical. 
Ochtheroidea laevis ('resson 
1018. OcJitlicroiilcd laei'iN Presson, Trans. Am. Fnt. Soc., xni\, (if. 
This sitecies is readily distinguished bj- its highh' ])olished 
surfaces. The face is more strongh' convex than in glaphyropus, 
and the sjiarse mesonotal setulae are ari'anged in wvW s(‘parat('d 
rows. 
Dcscrijitioii. — Polished black; midille and hind I ibiat^ and their tarsi, except 
ai)ices, yellow; three* basal joints of fore tarsi and halfe'res, white*; wings hy.'iline* 
with elark va*ins. Miehlle tibiae se)me*time*s infuse-ate'el me'elianly. 
Similar te) ghiphyropitii, but larger. Frems seanewhat bre)aele*r than leuig, 
with bristles well elevcloieeel. Face narreeweel abeeve miehlle tee eerie halt as 
wide as vertex. Cheeks narrow, about e)n(*-fifth as bi'eiael as e“ye4ie“ight . 
Arista with six to seven hairs. 
Mesonotal setulae sparse and distinctly seriateel. Ajeie-al bristles of 
scutellum with minute tubercles at bases, ddiird anel femrth abilominal 
segments subequal. Legs as in m-tuilis; femeeral spines fe-w. about li\'e*, the 
proximal one much the largest, stout, and distally i'emoV(*d. beiigth. 
2. .5 to 3 mm. 
Type. — (d ?; Alajuchi, ('osta Pica, S(‘p(('mb(‘r 14, 1!»()9. P. 
P. Calvert; swet'ping), [A. X. S. P., X'o. filo')]. 
TRANS. .\JI. ENT. SOC., XLVII. 
