1895. PROCEEDINGS OF THE NATIONAL MUSEUM. 93 



SPHENODESMUS CAFFRARIUS (Porat). 

 Eurydcsmuscaffrarius, Porat, Olursigtaf K. VetcDsk. Akad. Forli., No. 5, p. 13, 1872. 



Body strougly convex, glabrous above, setose below between the 

 cox;e, scarcely attenuate posteriorly. 



Head with very few setigerous foveiie. Vertex medianly longitudi- 

 nally sulcate, subgiabrous. Clypeus subglabrous, margin setose. 



Autenntie shorter than the breadth of the body, G mm. long. 



First segment with anterior margin laterally thickened, oblique, 

 nearly straight or very slightly sinuate j posterior straight, sides curved 

 forward, processes rounded. 



Segments glabrous, nearly smooth, or irregularly coriaceous under a 

 lens; lateral carin^o thickened, somewhat ascending i)osteriorly, ante- 

 rior angle rounded, posterior slightly acute, slightly i^rominent, more 

 acute on segments lG-19; ventral surface between segments 6 and 7 

 with a prominent triangular lamina. 



Repugnatorial pores rather dorsal than lateral, placed a little behind 

 the middle of the carina. 



Last segment prolonged, apex truncate, transversely impressed near 

 the apex ; setic few. 



Anal valves margined, with two pairs of setoe. Preanal scale large, 

 simple, or indistinctly trilid, the median lacinia far the longest; setig- 

 erous tubercles two. 



Legs of pairs 1-6 with a pul villus on the last joint; a triangular 

 prominent lamina between segments G and 7. 



Legs sliorter than the breadth of the body, 5 mm. 



Copulatory legs nmch i)rotrudiug. spiral, setose, the external margin 

 bidentate, with a lacinia near the intlexed apex. 



Color of alcoholic specimens testaceous. 



Length, 34 mm. ; breadth, G.5 mm. 



Local it i/. — Caffraria. 



This species is much larger than the type of the genus, and does 

 not belong to the tropical fauna. From Porat's description, however, 

 there seems to be no important point of difference from the present 

 genus, except that the dorsum of Sphenodefimus rugulosus is some- 

 what roughened. 



MARPTODESMUS,' new genus. 



Diagnosis. — Body of moderate size. 

 Antennje with four olfactory cones. 

 Segments dorsally smooth. 



Lateral carime medium; margins thickened, entire, 

 llepugnatorial pores 11, dorsal on the thickened margins of segments 

 5, 7, 9, 10, 12, 13, 15-19. 

 Penultimate segment very short, surpassed by segment 18. 



'The generic name lias reference to the numerous secondary sexual characters. 



