I9I9-] F- SiLVESTRi : Indian Chilopoda Geofhilimorpha. 95 



Appendices genitales biarticulatae. 



Fori anales nuUi. 



Pedum paria ad 91. 



Typus : Mesocanthus albus, Mein. 



Conspectus specierum. 



1. Sternum primuni poris destitutum, sterno segmenti 



ultimi pediferi medio sulcato ... ... M, albtis w. 7}i{nuta, 



Brolem. 



2. Sternum primum poris instructum, sterno segmenti 

 ultimi medio haud si'ilcato. 



3. Area porosa in medii corporis sternito quam 

 eorumdem srernilorum latitude parum minus 

 lata; corporis pedum paria Si ... ... M. perporosiis, 



sp, n. 

 4. Area porosa in medii corporis sternitis quam 

 eorumdem sternitorum latitude c. 2/5 minus 

 lata. 



5. Corporis pedum paria 69-73 i corpus 



parum angustum ... ... M. discretus, sp. n. 



6. Corporis pedum paria 57-59; corpus 



angustius ... ... ... M. brevis, sp. n. 



Mesocanthus albus, Mein. var. minuta, Brol. 

 (Fig. XXXI). 



Brolemann, Boll. Soc. ent. ital. XXXV, p. 116 (1903). 



The characters of the species are comprised in that of the 

 genus and demonstrated by the figures. 



The variety is certainly distinct from the typical form, as 

 represented by M. albus, Mein. from Tunis (North Africa), espe- 

 cially on account of the number of legs, which reach 85-73 i^ 

 specimens from Erythrea and 71-79 in specimens from India, in- 

 stead of 87-91 as in specimens from Tunis. 



The specimens preserved in the Indian Museum and referred 

 by me to the named form are the following : 2 9 near Bombay, 

 pp.75; I 2 Nowgong, Central Provinces, p.p. "]"] .^ long. corp. 57, 

 lat. 1-4; I 5 Kach, W. India, pp. 79; i cr» , Beyt, Dwarka, Ka- 

 thiawar, p.p. 73 ; i $ near stream, Dakar Hill near Junagadh, 

 Kathiawar, pp. 81; i $ Khas, Satara distr., c. 3,700 ft, p.p. 

 75; 2,0* Sasan, Kathiawar, p.p. 71 and 73. 



Mesocanthus brevis^ sp. n. 

 (Fig. XXXII). 



Corpus luride testaceum capite parum obscuriore. 



Lamina cephalica aliquantum ad basim latior quam longior. 

 Antennae basi contiguae gradatim attenuatae quam lamina cepha- 

 lica longitude fere duplo longiores. Pedes maxillares flexi margi- 

 nem frontalem spatio sat longo haud attingentes, articulis inermi- 

 bus, articulo ultimo unguiformi arcuato, acuto. 



