OF I'ATRA-EUltOPEAN TRICHOPTERA. 



131 



Macronema diguamma, nov. sp. M. nigrum, fronte ochracea. An- 

 tennae nigrae. Pedes flavi ; tibiis anticis fere muticis, cxtus fnsco 

 signatis. Abilomen nigrum ; appendicibus inferioribus gracilibus, 

 nigris ; pene pyriformi, flavo. Alae anticae angustae, ad apicem obtusac , 

 margine costali interioreque subparallelis, nigro-infumatae, pubes- 

 centes ; fasciis duabus transversalibus, marginem interiorem haud attin- 

 gentibus, albis: posticae pallidiores, cupreo- et orichalceo-micantes ( <S ). 



Long, antenn. 15 lin. ( = 32 mill.); long. corp. 3f lin. (=8 mill.); exp. 

 alar. 12 lin. ( = 25 mill.). 



Hab. Minas Geraes, Brasilia (in Mus. auct.). 



Black, almost hairless. Head : front swollen, ochraceous ; occiput with 

 two very large rounded swellings, whence spring short blackish hairs ; 

 antennae very long and slender, black ; palpi ochraceous ; eyes brown. 

 Thorax black. Legs yellow or testaceous, anterior tibiae with indi- 

 stinct fuscous markings externally ; the spurs on these tibiae very mi- 

 nute, almost obsolete ; spurs on the other tibiae long, yellow. Ah- 

 domen black, margins of the segments greyish ; last segment above 

 fringed with long black hairs ; app. sup. obsolete ; app. inf. very long 

 and slender, two-jointed, the apical joint curved strongly inwards, 

 fringed with black hairs ; penis yellow, pyriform, the apex very ob- 

 tuse ; penis-cover broad, semitransparent, obtuse. 

 Anterior wings long and narrow, the costal and inner margins nearly 

 parallel, the apex subelliptical, smoky fuscous, with rather dense, but 

 very short, darker pubescence ; two narrow, white, transverse parallel 

 fasciae, neither of which reaches the inner margin, but both starting 

 from the costa, one placed rather before the middle of the wing, the 

 other at about two-thirds of the length from the base, this latter being 

 broadest on the costal margin; veins scarcely darker. Posterior 

 wings somewhat paler, semitransparent, with beautiful coppery and 

 brassy reflections ; the costal margin deeply excised before the apex, 

 and in the excision is an appearance of a whitish mark ; fringes very 

 short and blackish; veins darker. (PI. III. fig. 15.) 

 I have one <$ from Minas Greraes, collected by Mr. Eogers. 

 The species is remarkable for its narrow wings, which are scarcely 

 dilated before the subelliptical apex. The anterior tibiae are 

 almost spineless ; but this obtains in other species of the genus as 

 it is now constituted. 



Hydropsyche, Pictet. 

 Hydropsyche colonica, nov. sp. H. fusco-nigra. Caput cano- 

 hirsutum : antennae fuscae, vix pallido annulatae. Pedes flavescentes. 

 Abdomen fusco-nigrum, linea utrinque albida; <$ segrnento ter- 

 minali supra in lobum elevation medianum incisum producto ; ap- 

 pendices testaceae ; inferiorum articulo ultimo brevi, subobtuso, ro- 



