46 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.61. 



beset with short, thick spines, which are truncated at tips and bear 

 each a strongly curved, elongate, flattened hair. These spines are 

 regularly arranged, sparsely and mostly on the margin of the thorax, 

 though there is a transverse row on the pronotum and three pairs 

 inward from the marginal row on the mesonotum. 



Appendages densely punctate and with suberect. rather stiff hairs. 



Color reddish brown. 



Femah.— {deai\ixted). Length 3.10 mm. 



Head similar to that of worker, but with longitudinal rugae on 

 front. Pronotum with short and stout humeral spines. Mesothorax 

 nearly as broad as long, its surface flat. Scutellum a little broader 

 than long, strongly excised posterior border, with nearly straight, 

 convergent sides that terminate in stout spines and project laterally. 

 Epinotal base and declevit}' not distinct from each other, with short. 

 very broad lateral spines. Petiole and postpetiole similar to those of 

 worker. 



Granulose, punctate and opaque, mesothorax and scutellum with 

 short, longitudinal rugae. Spines somewhat shorter than in the 

 worker; lacking on the thoracic dorsum. 



Curved hairs moderately abundant on head, thorax and append- 



Color as in worker. 



Type locality. — Honduras : Progresso. 

 Type.— C&.t. No. 24464, U.S.N.M. 



MYRMICOCRYPTA EDNAELLA. new species. 



Worker.— Length 2-2.25 mm. (fig. 20). 



Head one-fourth longer than broad, slightly narrowed in front, 

 sides little convex, occipital corners subangulate, border nearly 

 straight; vertex rather strongly impressed at middle between the 

 frontal c-arinae, occiput with three smaller impressions, the outer 

 two of which are bordered by fine carinae. Mandibles long and 

 pointed, 6-dentate. Clypeus broadly rounded at anterior border, 

 median portion elevated and margined at sides. Frontal lobes short 

 and rather thick, carinae parallel to nearly opposite anterior border 

 of eyes, then arcuate and bordering vertical impression and extend- 

 ing on occiput. Eyes small, convex, situated at middle of sides of 

 head. Postorbital carinae fine but distinct, extending to occipital 

 corners. Antennal scapes rather stout, slightly surpassing occipital 

 corners; first funicular joint a little shorter than joints 2-3 together, 

 second joint barel> broader than long, joints 3-8 a little longer than 

 broad, terminal joints shorter than the three joints preceding. Prono- 

 tum nearly flat in fi'ont, more concave behind, divided by a very ob- 

 tuse angle into two surfaces, the anterior of which has at sides thick 

 margins that terminate as broadly triangular spines, and the posterior 



