132 WILLIAM J. FOX. 



specier*, which at the present writing I do not possess. Inability of 

 determining the snbgenera, groups, etc., was not, however, my reason 

 for tlie discarding the names in this paper, but because their use 

 Avould have necessarily led to the application of many inore, a practice 

 too much in vogue in late years, and which should be discouraged. 



The author desires to express his thanks for favors received from 

 the follow^ing persons, all of whom have either contributed specimens, 

 or have otherwise assisted : E. T. Cresson, Wm. H. Ashmead, C. V. 

 Riley, W. H. Harrington, J. A. Guignai-d, W. A. Nason, T. D. A. 

 Cockerell, G. C. Davis, A. S. Packard, O. B. Johnson, C. W. John- 

 son, Mrs. A. T. Slosson and others. 



EKTO]»IOCJ]\ATHUS Dlilb. 

 Crabro (in pt.) V. d. Linden, Obs. ii, 70, % ^. 

 Crahro (in pt.) Sluickard, Foss. Hvm. p. 175, sp. 33. 

 Linilenius (in pt.) St. F. and Brulle, Ann. Soc. Eut. Fr. iii, 800, 1834. 

 Entomognathnfi Dahlhohm. Hyra. Eur. i, 295. 

 Crabro (in pt.) Smith, Morawitz, etc. 

 EutomoynathHs Thomson, Hyui. Skand. iii, 259 : Cresson, Synopsis Hym. pt. 1, p. 122. 



Eyes covered with short hair ; mandibles emarginate externally, 

 unarmed at apex. Antennae 9 and S 12-jointed ; episternum meso- 

 pleuralis not ridged anteriorly, the epimerum without a central ridge 

 or a crest before medial coxae ; second discoidal cell about as long as 

 the firs't, broadest medially, subtrnncate at apex ; sculpture subtle. 

 Abdomen strongly convex above and beneath, the last dorsal seg- 

 ment of both sexes with a well develo})ed pygidium. 



Entoiiiogiiatlms toxaiiiis Cress. 



EntomoitnuthHs texanas Cresson, Synopsis Ilym. pt. 2, p. 286, 9 % . 



9 . — Head very sparsely punctured ; frontal impression strong, as are also those 

 running from the hind ocelli to inner orbits; dorsulum and mesopleurse appar- 

 ently inipunctate ; scutellum longitudinally impressed ; middle segment above 

 with large fossnlets, formed by coarse rugse, posterior face strongly rugose, 

 bearing two strong carinse, which cliverge from the centre of the apex, forming a 

 V, sides nearly smooth ; abdomen, except pygidium and second ventral segment, 

 inipunctate, the parts mentioned bearing large punctures, those on the second 

 ventral much scattered ; pygidium long, triangular, covered with appressed pu- 

 bescence. Black; shining, mandibles basally, scape, two widely separated spots 

 on prouotum, tubercles, spot on teguhu, two spots on scutellum, tips of all the 

 femora, particularly the four anterior tibige, except a dark spot within; tarsi 

 (apical joints darker), and a large spot on dorsal abdominal segments 1-5, yellow ; 

 pubescence of clypeus and inner orbits, silvery. Wings fusco-hyaline with a 

 yellowish tinge, nervures and stigma black. Length 7 mm. 



-jj . — Has the yellow on prouotum and legs more prominent, and the cly])eus 

 entirely yellow; last .joint of autennte nearly as long as the two preceding ones 



