298 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. 



HYPOCAMPSIS l'.".iHt«r. 



Hyiii. Stud., 11, i>. 108, (la^iti.) 



(No tyjK' «leHciilM'«l.) 



Fleiul traiisvoTse, froiis coiivex, tlio ociripnt not marjriiKMl; ocelli .'5, in 

 a triangle, tlu' latcrnl iiean'r to tlie front ocellus tliiiii to tlie niarj^in of 

 tbii eye. 



Anteniiic lO-jointed in both sexes, in 9 subclavate, <>r with a 4- or 

 r>-joint('(l club, all the jiMuts cylindiical, the joints 2 to longer than 

 thick; in S with the Ihst fnnichir J<»iiit short, cup shajted, tln^ secoml 

 very strongly thickened, the last (> Joints cylindric, with short hairs, 

 the last the longest. 



Thorax subovoid, the niesonotuni short, convex, with two inipi-essed 

 lines; scutelluni snbelevated, rounded behind, foveated at base; meta- 

 thorax very short, the ]»h'ura i)iilM'Scent. 



Wings veinless, pubescent. 



Abdomen uearly elliptical, tiie margins broadly detlexed, the tirst 

 segment hmger than thick, the last 4 segments together not qnites as 

 long as the second. 



Legs clavate. 



Distinguished by the broad, d<'flexed margins of the abdomen. Fr»rs- 

 ter's type apju'ars not to havi^ been described, although Thomson has 

 recognized the genus in Sweden and describes three species therein. 



Hypocampsis pluto Aslmi. 



(PI. XII, Fig. 10, $.) 



Can. EDt. xix,p. 131, $ ; Cress. Sjn». Hym., p. 250. 



9 . Length, 1.5""'. Wholly black, jiolished, the tarsi ahme slightly 

 piceous. Head transverse, wider than thorax, the lateral ocelli more 

 than their width from the margin of the eye; the eyes large, long oval. 

 Antennsi; 10-joiuted, the last funiclar joint thicker than the jneceding; 

 chib 4-jointed (5 jointed if we count the thickened last funi«dar joint 

 which might really be considered as belonging to it), the joints all 

 longer than thick, cylindric, the last conical and longer than the i)enulti- 

 mate. The thorax is roundedly narrowed anteriorly with 2 delicate 

 furrows; scutellum rounded, highly convex; the metathorax short, 

 strongly sericeous. Wings hyaline, pubescent, the teguhe black. Ab- 

 domen subovate, pointed at tip, narrowed toward base, very little 

 longer than the thorax, with broad lateral margins. ; 



Habitat. — Jacksonville, Fla. 



Type in Coll. Ashmead. 



ERITRISSOMISRUS Asbiii., gen. nov. 

 (Type E. crcidoviyhr.) 



Head broadly transverse, with a sharp acute process between the 

 antenna', the lateral ocelli away from the eye margin, but still nearer 

 to it than to the front ooellus. . 



