1S77.] 87 



MiCKOSTIGMA TERMIKATUM, n. Sp. 



Thorax black above, the dorsal keel narrowly yellow ; a humeral line not 

 reaching the anterior portion, and a short ante-humeral line anteriorly, scarcely ex- 

 tending beyond the termination of the humeral, yellow : sides, and beneath, yellow, 

 with a complete narrow black median line on the sides, and a blackish central pectoral 

 line. Abdomen (nearly destroyed) black, with an indication of a yellowish mark on 

 each side of the anterior portion of the eighth segment. Wings hyaline, with black 

 neuration ; in the anterior wings there is a broad fuscous ante-apical fascia, concave 

 internally and cxtei'nally, leaving a large, opaque, ochreous (not very finely reticu- 

 lated), oval, yellow apical spot. No pterostigma in either pair of wings. In the 

 posterior wings, the apical portion is also dark fuscous (but less broadly so), convex 

 internally, and enclosing a small, rounded, milky-white spot at the extreme apex. 



Expanse of anterior wings, 114 mm. 



I have one very mucli mutilated ? example, believed to be from 

 East Peru (district of tbe Ucayali Kiver). It wauts bead, legs, and 

 basal segments of tbe abdomen, and tbe basal portion of the wings is 

 also destroyed (by Anthreni). The coloration of the anterior -wings 

 is somevrhat similar to that seen in M. rotundatum, race exustum, but 

 the wings are not so broad, the reticulation less dense, and the broad 

 ante-apical portion is darker (nearly black) : the posterior wings are 

 remarkable for the small rounded white spot in the dark apical portion. 

 Thoroughly distinct from any described species. 



AN0MI8MA, n. g. 

 Allied to Microstigma. Differs from all known Affrionina in the 

 quadrilateral area at the hase of the wings heing reticulated iy transverse 

 nervules, long ; wings petiolated up to just within the level of the 

 nodus ; reticulation of the post-costal area not greatly ramified, form- 

 ing 3 — 4 rows of irregular cellules in its broadest part ; no pterostigma 

 in cither pair of wings. 



Anomisma abnorme, n. sp. 

 Black. Head black above, yellow at the back ; a short yellow oblique line be- 

 fore and behind the basal joint of the antenna) ; labrum narrowly margined with 

 yellow ; under-side yellow. Prothorax yellow at the sides, the posterior margin 

 narrowly yellow, the anterior portion with a narrow raised yellow lino just within 

 the extreme margin, which remains black. Thorax with a narrow yellow dorsal 

 keel, a yellow humeral line (not reaching the anterior mai'gin), and a short yellow 

 ante-humeral line anteriorly : sides and beneath yellow ; a complete black lateral 

 line, and a black pectoral line, furcate posteriorly, connected with a transverse black 

 line behind the legs, and there are two or three small black spots. Legs yellow, with 

 black spines ; femora externally, tibiae and tarsi internally, witli a black line. Ab- 

 domen bronzj'-black, yellow beneath, but witli a black ventral line ; Ist and 2ud 

 segments broadly yellow on the sides, and with a narrow median dorsal yellow line, 

 interrupted by the suture ; genitalia of 2nd segment yellow. (Mutilated after the 

 6th segment). Wings rather narrow, the anterior pair rounded at the apex, the 

 posterior narrower and elliptical: hyaline, with black neuration. In the anterior 



