19, 6 Rohwer: Wasps of Subfamily Sphecine 667 
| Subgenus Ammobia Billberg 
Chlorion (Ammobia) umbrosa var. plumifera (Costa). 
Chlorion umbrosus var. plumiferus Costa, WILLIAMS, Bull. Hawaiian 
Sugar Planters’ Assoc. 14 (1919) 125. 
This variety is included in many of the Philippine lists: under 
the name (Sphex) Chlorion argentata Dahlbom. Argentata is 
a synonym of wmbrosa and as there seems to be only one variety 
in the Islands which might be assigned this name, it is rather 
certain that references to the species apply to this variety rather 
than to the typical form. 
LUZON, Manila (W. A. Stanton), female: Laguna Province, 
Los Bafios (Baker 369). Two females and one male, under 
Bureau of Agriculture accession numbers, as follows: LUZON, 
Manila (B. Arce), accession No. 129: Bataan Province, Lamao, 
and Nueva Ecija Province, Cabanatuan (C. R. Jones), accession 
Nos. 843 and 1254. 
Chlorion (Ammobia) umbrosa var. rufipennis (Fabricius). 
Sphex umbrosa var. rufipennis Fabricius, KoHL, Ann. Naturh. Hofmus. 
Wien 5 (1890) 408; AsHmEaD, Proc. U. S. Nat. Mus. 22 (1904) 150. 
Ashmead has recorded this variety as occurring in the Islands, 
but it is not represented in the collection before me. This variety 
can be recognized by the black pubescence and yellowish hyaline 
wings with smoky apices. 
Chlorion (Ammobia?) maura (Smith). 
Sphex maurus Smith, BincHam, Ann. & Mag. Nat. Hist. VI 16 (1895) 
443; BINGHAM, Fauna Brit. India, Hym. 1 (1897) 247. 
This species is recorded from Cape Engafio, Luzon, by Bing- 
ham but is not in the collection before me. From the descrip- 
tions the species is allied to Ammobia sulciscuta (Gribodo) but 
may be separated from it by the presence of a median furrow 
on the propodeum. The following characters from Bingham’s 
description should aid in the identification of the species : “Black 
with black pubescence; the wings dark fuscous, with a rich 
purple effulgence,” scutellum, metanotum, and propodeum fur- 
rowed down the middle; propodeum steeply rounded at apex, 
almost truncate, “the median furrow not reaching the edge of 
the truncation, but broadening out in spoon-shaped form just 
before the margin.” 
Length of male, 25 to 28 millimeters; of female, 28 to 34 
millimeters. Tarsal claws with two teeth. 
