1865.] 11 



shining, finely punctured, with a rather large subquadrate yellow spot 

 on each side posteriorly, above which there are several elevated longi- 

 tudinal ridges, and on the extreme sides at base a well developed obtuse 

 tubercle; teguke dull honey -yellow. Wings: the anterior pair mostly 

 fusco-hyaline, especially the costal half, the apical posterior half and 

 the posterior pair entirely hyaline, the whole with a brassy, subiride- 

 scent gloss ; nervures fuscous, costa ferruginous ; second submarginal 

 cell elongate, twice as long as wide, and connected with the first discoi- 

 dal cell by a short petiole, third submarginal subquadrate, slightly longer 

 than wide and receiving the second recurrent nervure beyond the 

 middle. Legs, with their coxas, yellow ; the tarsi, especially the posterior 

 pair, dusky. Abdomen polished, punctured; at the tip of the first seg- 

 ment a transverse, subinterrupted, yellow line, and close to the apical 

 margins of the four following segments a broad, transverse, yellow band, 

 broadest on the second segment and slightly produced anteriorly on 

 each extreme side, that on the third, fourth and fifth segments slightly 

 produced and emarginate on the disk; venter polished black, the second 

 segment with a conical, transverse yellow spot on each side posteriorly, 

 tip of this segment somewhat acutely produced and deeply emarginate. 

 Length 5 lines ; expanse of wings 9 lines. 



Collection. — Dr. J. Gundlach. One specimen. 



The general structure of this very interesting species is the same as 

 given by Shuckard under the genus Lycogaster (Entomologist, p. 123 

 and figure), except that this species has the antennae 25-jointed, the 

 mesothorax with only two longitudinal furrows, and the neuration of 

 the anterior wings is somewhat different. The structure of the abdo- 

 men is the same (and well represented in the figure in profile) except 

 that the tip of the second ventral is differently constructed, being bifid, 

 and not spinose. The specimen before me is apparently a male, and 

 Westwood seems to think that the different structure of the ventral 

 segments in the Lycogaster pullatm Shuckard, is a mere sexual differ- 

 ence, it being nothing more than a "male of another species of Trlgo- 

 naly.s." (Trans. Ent. Soc. Loud, iii, p. 274, note.) 



It gives me much pleasure to dedicate this elegant species to Dr. J. 

 Gundlach, to whom I am greatly indebted for the valuable assistance 

 he has rendered me in the study of the Hymenoptera of Cuba, by the 

 loan of the uniques of his collection. 



