228 bulletin: museum of comparative zoology, 



179. Amphelictogon pallidipes, sp. no v. 



Type. — M. C. Z. 4,496. Cuba: Guantanamo, Mt. Libano, Las 

 Termapilas, March 30, 1913, under stones in damp woods. C. T. 

 Ramsden. 



Differing in general appearance from the other species, in wholly 

 lacking the red coloring in the legs and antennae, these being uniform 

 yellow. The dorsum is from deep brown to nearly black, excepting 

 the keels and a narrow line or stripe along the caudal margin of each 

 somite, which are yellow; the caudal stripe widens and extends 

 angularly forward at the middle. The prozonites show no light area 

 above. The head has the usual color-pattern. 



The dorsal surface under the microscope appears strongly though 

 finely roughened, granulate. Caudal corners of keels less produced 

 than usual, more angular. Caudal margin of keels with the usual 

 dentiform processes; of these the outer one is much broader across 

 base than in any of the other species. Processes of nineteenth seg- 

 ment short, distally rounded. 



The gonopods of the male resemble most those of A. suhterremiiis 

 (Saussure) as figured by Carl, (Rev. Suisse zool., 1903, 11, pi. 16, fig. 

 14) but the terminal blade of the upper branch is longer and more 

 strongly coiled, with a number of stout teeth springing from its caudal 

 edge. The lower branch lacks the tooth on the mesal side just proxi- 

 mad of the origin of the style which is present in A. subterrcanus; the 

 style at base is coiled into a nearly complete circle instead of being 

 simply bent in U-form and it is also distally more coiled. There are 

 various other differences in details. 



Length (male type), 30 mm. ; width, 3.5 mm. 



ISO. Amphelictogon guantanamanus, sp. nov. 



Type. — M. C. Z. 4,497. Cuba: Guantanamo. Paratypes. — 

 M. C. Z. 4,498, 4,499. Cuba: Otiente Province, Belig, near Cape 

 Cruz. C. T. Ramsden. 



Readily distinguished by the structure of the male gonopods. The 

 terminal blade of the upper branch curves mesoventrad, then proxi- 

 mad (caudad) and then back dorsoectad and somewhat distad (cepha- 

 lad). The two blades touching at middle line but not crossing. The 

 style from its base curves mesoventrad, then ventrad and proximad. 



