HYMENOPTERA ii 



(4) Nesoinimesa nitida, sp. nov. 



Praecedenti simillima ; ? area propodei antica nitida, </ tarsis anterioribus 

 infuscatis distinguendus. cT?- Long. 7 — 12 mm. (Plate I. figs, i and \ a.) 



Extremely like the preceding species. The ? is distinguished readily by the form 

 of the spine on the cheeks, when this is well developed. In such examples, when the 

 head is viewed from in front the spines are widely, and more or less obliquely, truncate 

 at the apex, and the margin is there reflexed. When the spines become reduced 

 in size this distinction is lost, in which case the smoother anterior area of the 

 propodeum, which is but little less shining than the scutellum, will separate the two 

 species. The wings are entirely, but not very deeply, infuscate, and often have 

 a blue iridescence. The spines of the tarsi are for the most part pale. 



The /, which varies greatly in size, can only be distinguished, so far as I can 

 see, by the darker anterior tarsi. 



Var. a. Abdomen red. (?.) 



Hab. Molokai, Lanai, and Maui (2000 — 5000 ft.). It is possible that the 

 examples from Maui, of which I have seen only one or two, may be distinct. 



(5) Nesoinimesa hawaiiensis, sp. nov. 



Duabus spp. praecedentibus simillima ; ? spinis genalibus plerumque brevioribus, 

 acutis; area propodei antica opaca; tarsorum spinis piceis vel nigricantibus distinguenda. 

 Tarsi c/" anteriores obscurati ; area propodei antica haud nitida. i ?. Long. 6-5 — 13 mm. 



Female similar to those of the two preceding in general appearance. The spines 

 on the cheeks apparently do not ever attain to so great a length as in well developed 

 examples of those species. In front view they are acute at the apex, and divergent, 

 but sometimes are so short as to be invisible in this aspect. The thorax is altogether 

 duller than in the allied species, the anterior area of the propodeum being quite dull. 

 The spines of the tarsi are dark. 



The cf is extremely similar to that of N. nitida, but the duller surface of the 

 anterior area of the propodeum will usually distinguish them. 



Hab. Mountains of Hawaii (4000 ft.); widely distributed. 



Deinominusa, gen. nov. 



Genus Nesoinimesae cognatum. Genae % inermes ; clypeus fortiter elevatus, labro 

 patente ; antennae fortiter clavatae. Abdominis segmenti primi (c/* ?) pars petiolata 

 distinctissime carinata. 



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