298 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. 



HYPOCAMPSIS rr.ister. 



Hyni. Stud., ii, p. 108, (1856.) 



(No iypt' described.) 



Head transverse, froiis convex, the occiput not margined; ocelli 3, in 

 a trianjjle, the lateral nearer to the front ocellus than to th«> niari^in of 

 the eye. 



Antennie lO-jointed in hoth sexes, in 9 snbclavate, or with a 4- or 

 r^-jointed club, all tlie joints cylindrical, the joints 2 to <> lonjj^er than 

 thick; in S with the first funiclar joint short, cup-shaped, the second 

 very strongly thickened, tlio last <> joints cylindric, with short hairs, 

 the last tlu^ longest. 



Thorax subovoid, the niesonotuni short, convex, with two impressed 

 lines; scutellum subelevatcd, r<)nn<led behind, fovcated at base; meta- 

 thorax very short, the pleura pubescent. 



Wings veiidess, pubescent. 



Abdomen ue.arly elliptical, the margins l)roadly detlexed, the first 

 segment longer than thick, the last 4 segments togetlicr not quite as 

 long as the second. 



Legs clavate. 



Distinguished by the broad, deflexed margins of the abdomen. Fiirs- 

 ter's type appears not to have been described, although Thomson has 

 recognize<l the genus in Sweden and describes three species tlierein. 



Hypocampsis pluto Aslim. 



(ri. XII, Fig. 10, 9.) 



Can. Ent. xix, p. 131, 9 ; Cress. Syii. Hyiii.. p. 250. 



9 . Length, 1.5""". Wholly black, i)olished, the tarsi al'one 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. 

 Anteuuie 10-jointed, the last funiclar joint thicker than the preceding; 

 club 4-jointed (5 jointed if we count the thickened last funiclar j(unt 

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

 longer than thick, cylindric, the last conical and longer than the ]ienulti- 

 mate. The thorax is roundedly narrowed anteriorly with 2 delicate 

 furrows; scutellum rounded, highly convex; the nu^tathorax short, 

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

 domen subovate, pointed at tii), narrowed to\A'ard base, very little 

 longer than the thorax, with broad lateral margins. 



Habitat. — Jacksonville, Fla. 



Type in Coll. Ashmead. 



ERITRISSOMERUS Ashui., fjeii. iiov. 

 (Type A'. cccidomi/'Kr.) 



Head broadly transverse, witli a sharp acute process between the 

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

 to it than to the front ocellus. 



