8 PEOCEEDIirGS OF THE NATIONAL MUSEUM vol. T2 



Described from two specimens, type collected July 19, 1923, by 

 R, A. Cushman, and paratype collected July 19, 1906, by D. H. 

 demons. 



Type.— Csit. No. 40189, U.S.N.M. Paratype in writer's collection. 



CHALCOGONATOPUS RAPTOR, new species 



Figs. 19 and 5 



Female. — This is a large, very striking species, being 6 mm. in 

 length. General color black, except legs and abdomen which are 

 ferruginous to fuscous. Head broader than long (19:10), with short 

 dark scattered pilosity; vertex broadly concave, surface densely 

 areolate ; ocelli in equilateral triangle, the lateral ones being situated 

 almost to occiput, carina from median ocellus to between bases of 

 antennae; mandibles except teeth, and clypeus, fuscous; antennae 

 long, fuscous; scape, second, third, and tenth joints lighter in color 

 than rest. (Fig. 19.) Pronotum without transverse impression, ap- 

 pearing rounded in profile, with sparse erect white hairs, densely 

 areolate; thoracic constriction stout, not much longer than wide, 

 gradually widening posteriorly to merge with propodeum, densely 

 areolate, pilose as on pronotum; legs fuscous to testaceous, anterior 

 coxae and trochanters long, latter thickening abruptly proximally 

 so that their basal part or stalk is much shorter than swollen part; 

 chela as in Figure 5. Propodeum indistinguishably merged with 

 thoracic constriction, densely areolate and with same type of pilosity 

 as rest of body. Abdomen fuscous with long distinct, more or less 

 erect sparse pubescence. 



Type locality. — Porto Bello, Panama. 



Described from one specimen, collected by A. Busck. 



Type.—Q2ii. No. 40190, U.S.N.M. 



EPIGONATOPUS TENUIS, new species 



Figs. 21 and 6 



Female. — This is a very slender species. Length, 3.3 mm. General 

 color testaceous to fuscous. Head broader than long (9:6); vertex 

 moderately concave, surface sculpture a feeble microscopic areolation 

 in some parts, mostly smooth and shining; carina extending from 

 median ocellus to between bases of antennae, lateral ocelli nearer 

 together than to median ; antennae moderately long, subclavate, scape 

 and second joint testaceous, rest of joints fuscous. (Fig. 21.) Pro- 

 thorax much narrower than head, with a short, sparse, indistinct 

 pilosity, divided by a deeply impressed arcuate suture into a broader 

 shorter anterior division and a longer narrower elevated posterior 

 part, testaceous but infuscated around pronotal suture, with same 

 surface sculpture as found on vertex of head; thoracic constriction 

 longer than wide, testaceous except infuscated area near union with 



