1893.] NATURAL SCIENCES OF PHILADELPHIA. 521 



the metathorax above with coarser sculpture and the three apical 

 segmeuts red. Larva du nor Prow, of which I possess a $ received 

 from J. A. Guignard, is, as far as the $ is concerned, identical with 



terminatus. 



19. — Tachysphex apicalis Fox. 



T. apicalis Fox, Journ. N". Y. Entom. Soc. I, p. 53. 9 S 



9 . — Anterior margin of the clypeus rounded out, very slightly 

 emarginate medially, not dentate laterally ; front with rather strong, 

 separated punctures ; vertex with the punctures deeper ; occiput 

 when viewed from behind slightly emarginate above; space between 

 the eyes at top about equal to the length of antennal joints 3 and 4 

 united; first joint of the flagellum but little shorter than the second; 

 dorsulum with strong, separated punctures, much sparser than those 

 on the front ; upper surface of metathorax coarsely reticulated or 

 rugoso- reticulate, the inetapleura? coarsely striated, the posterior 

 face roughened and with the transverse ridge at the top very prom- 

 inent and sinuous ; tibia? and tarsi tolerably well armed with spines; 

 pygidial area sparsely punctured, scarcely twice as long as it is 

 broad at the base. Black; mandibles in the middle reddish; apical 

 abdominal segment bright red; wings slightly fuscous, iridescent, the 

 basal third s'ubhyaline; marginal cell obtuse at apex ; second sub- 

 marginal cell at the top slightly wider than the third at the same 

 place ; head and thorax with sparse silvery pubescence that on the 

 vertex fuscous; abdomen with sparse silvery pile. Length about 

 9J mm. 



$. — Front coarsely and rather closely punctured; occiput dis- 

 tinctly emarginate when viewed from behind; space between the eyes 

 at top distinctly greater than the length of antennal joints 2-4 

 united ; anterior margin of the clypeus a little produced medially; 

 antenna? much shorter than in fusus and terminatus, the first joint of 

 flagellum not one-third shorter than the second; dorsulum with 

 strong, separated punctures; scutellum slightly impressed; upper 

 surface of metathorax as in the 9 > the sides not so coarsely striated; 

 abdomen rather distinctly punctured ventrally ; the silver pubescence 

 of head and thorax more dense than in the 9 • Length 8 mm. 



Southern Florida. {Mrs. A. T. Slosson.) 



20. — Tachysphex acuta Patton. 

 Larva acuta Patt., 1. c. p. 390. 



9 . — Anterior margin of the clypeus rounded out, armed laterally 

 with an indistinct tooth or else entire ; front very finely granulated ; 

 34 



