198 BULLETIN 46, UNITED STATES NATIONAL ML T SEUM. 



16. Scolopendra heros (iinird. 



1860. Scolopendra cdcca Saussure. Myr. Mex., 124. 

 1860. Scolopendra otomita Saussure. Myr. Mex., 125. 

 1860. Scolopendra maya Saussure. Myr. Mex., 126. 

 Ace. 18478. Guanajuato, Mex.; Duges. 



A comparison of this specimen with Saussure's Mexican species has 

 led me to regard the above as synonyms of heros. 



17. Scolopendra pachypus Kolilrausch. 

 Ace. 19811, Truxillo, Honduras; C. H. Towusend. 



One specimen. It only differs from pacliypua in size; length, 85 mm . 

 All the known pachypus are not more than 65"' m long. 



18. Scolopendra nicaraguensis, sp. nov. 



Diagnosis. Related to Scolopendra heros Girard but the anal pair of 

 legs thicker and shorter; first 15 dorsal plates immargiuate; last anal 

 plate shorter and wider. 



Type.Kcc. 19099, U. S. Nat. Museum. 



Habitat. Nicaragua; Dr. Bransford. 



Description. Dorsal plates dirty yellowish green; legs and under 

 parts yellow; antenna? pale; prehensorial pair of legs dark orange. 

 Moderately robust, smooth, not punctate. Head suboval, punctate; 

 a longitudinal median depression; no sulci. Antemue rather short, 

 articles 21-24, the first four not hirsute. Prosterual teeth 4 4- 4, rather 

 large, inner coalesced; coxal tooth large, unarmed. The first 15 dorsal 

 plates immarginate; sulci deep; posterior borders not wrinkled. Sulci 

 of ventral plates well marked; last ventral plate short and wide, sides 

 converging, posterior margin truncate. Second tarsal joints of all the 

 legs except anal armed. Anal pair of legs short and thick ; spines large, 

 5-0 in two rows on the superior interior surface, 2 or 3 each on the inner 

 and inferior interior surfaces, beneath 6-10 in two rows; apical process 

 slender, bifid. Posterior margin of anal pleurae slightly convex, apex 

 with 3 or 4 spines, also 1 marginal. Length, 90""". 



The collection contains three specimens of this species, of which one 

 is in a good condition. It is distinguished from pachypux by having the 

 anal legs less crassate; from per nix by having the spines of anal legs 

 less numerous. 



19. Scolopendra hirsutipes, sp. nny. 



Diagnosis. Belated to Scolopendra . hcros, but the tarsi of anal and 

 penultimate pairs densely and shortly hirsute; spines on the upper in- 

 terior surface of femora 3 or 4 in two series. 



Type.U. S. Nat. Museum. 



Habitat. West Indian fauna. 



. Yellowish brown, posterior margin of dorsal plates 



