NORTH AMERICAN HYMENOPTERA. 255 



basal segment above clothed with a short, dense, appressed, reddish puliescence ; 

 remaining segments above and beneath fringed with a long, dense, pale, ochra- 

 ceous, or cinereous pubescence, which also covers the large ventral segment ; the 

 apical segments above and the venter entirely is often more or less fuscous ; the 

 node is very broad, being nearly as broad as the base of the second segment, 

 flattened, sometimes black, with black pubescence, mixed on the sides with 

 ochraceous. Length 8.5-13 mm. (Cresson.) 



Hab.— Colorado. 



The node of the abdomen in this species is differently shaped from 

 that of any of the })recedino; species, being as broad as the liase of 

 the large second segment, whereas in all others it is rather small and 



Sphserophthalina liixiiriosa Smith. 



Female. — Black ; the legs ferruginous, adm-ned with bright golden yellow pu- 

 bescent marking ; head large, wider than the thorax and subquadrate, above 

 covered with golden colored pubescence ; the antennae obscurely ferruginous ; 

 thorax slightly narrowed behind, above with golden pubescence; the truncation 

 of the nietathorax and a subtriangular space in front black, the coxae and tips 

 of the femora and tibiae black ; abdomen with the basal segment black ; the 

 .second with golden pubescence, a semicircular spot at its basal margin in the 

 middle, a somewhat angular one on each side and its apical margin with a broad 

 fascia that is widest in the middle, black ; the following segments with pale 

 golden yellow pubescence. Length 12..5 mm. (Smith.) 



Hab. — Mexico. 



Spliieroplitlialnia viilpina Smith. 



Female. — Black and densely pubescent ; the head with long, suberect, yellowish 

 ^vhite pubescence; the thorax covered with similar pubescence and having an 

 ovate tuft of black on the disc ; the abdomen with a large, .semicircular, black 

 pubescent space at the base, then a broad band of yellowish white followed by 

 one of black, the apex being whitish, except the apical segment, which is black. 

 Length 14 mm. (Smith.) 



Hab. — Mexico, Oajaca. 



Spliseroplitlialina derilicta Smith. 



Female. — Head, antennae, legs and abdomen black ; thorax ferruginous ; head 

 and thorax rugose, the former the same width as the latter, which is elongate, 

 with the lateral margins nearly parallel, being very slightly narrowed in the 

 middle and rounded anteriorly and posteriorly; the legs with a thin, pale pubes- 

 cence ; the spiues at the apex of the tibiae and also those at the apex of the joints 

 of the tarsi pale ferruginous ; the apical margin of the basal .segment of the ab- 

 domen, a large oblong patch on each side of the second segment at its base, a broad 

 fascia on its apical margin and the following segments covered laterally with 

 yellowish white pubescence. Length 1.3 mm. (Smith.) 



Hab. — Central America. 



Spliserophthalnia inelaiicholica Smith. 



Female. — Black, with the thorax more or less obscurely red above and with 

 black and white pubescence ; the thorax and abdomen rugose, the former biden- 



