88 BULLETIN 46, UNITED STATES NATIONAL MUSEUM. 



6. Rhacophorus magnus, sp. nov. 



Diagnosis. — Related to E. marantus (Karscli), but with an indistinct 

 row of tubercles along anterior and posterior margins of segments, and 

 a few on lateral carina?. 



Description of species, — Brown, legs light chestnut; robust, wide and 

 depressed, slightly attenuated anteriorly. Segments with a transverse 

 sulcus as in marantus; tubercles indistinct, arranged in a more or less 

 irregular row along the margins, three or four large scales on lateral 

 carinad; lateral carinse large, strongly margined, anterior angles 

 rounded, posterior much produced. Eepugnatorial pore large, subapi- 

 cal, marginal. Length of last fourteen segments 22.5 111111 , width of 

 seventh segment 4.3 min . 



The type of this species is a mutilated female, of which the head and 

 first six segments are lost. On account of this I have been unable to 

 determine the subgenus unless it belongs to the same as marantus. 

 Karsch has described two other species of this genus from Cuba, but 

 both belong to the subgenus Cryptodesmus and lack the transverse 

 dorsal sulcus. This is the largest Rhacophorus known. 



7. Orphnaeus brasiliensis Meinert. 



The collection contains a fine female, which agrees very well with 

 Dr. Meinert's description of this species. This is the first record of 

 this species from the West Indies. 



8. Mecistocephalus punctifrons Newport. 



There are a few specimens in the collection which I refer to this spe- 

 cies, agreeing with Dr. Meinert in considering M. f/uildingii a doubtful 

 species and identical with M. punctifrons. 



9. Scolopendra alternans Leach. 



One female of this species sent by Professor Poey. 



10. Newportia longitarsis Newport. 



Scolopocryptops longitarsis Newport, Linn. Trans., 407, pi. 40, fig. 10, 1844 (St. 



Vincent). 

 Netvportia longitarsis Gervais, Aptferes, iv, 298, 1847; Newport, Cat. Myr. Brit. 



Mus., 57, 1856. 



Rufous, head and posterior border of segments darkest, antenna? and 

 legs pale. Moderately robust, smooth, sparsely punctate. Head sub- 

 oval, sparsely punctate and pilose, not margined, posterior half with 

 two longitudinal sulci. Antenna?, short, attenuate, 17 jointed, basal 

 joints crassate, all except the first two hirsute. Presternum not promi- 

 nent, callose, sinuate. Anal legs very long and slender, somewhat de- 

 pressed, femora armed with about 22 large and small hooked spines 

 which are arranged in four or five series, tibia with two long spines 

 beneath, femora and tibia with numerous hooked hairs on the inside. 

 Penultimate pair of legs with the tibia and first tarsal joint also fur- 

 nished with numerous hooked hairs. 



