190 Records of the Indian Museum. [Vol. VT, 



Porcellionides asiaticus (Uljanin). 



1875. P or cellio asiaticus, \JV\m\m, Crustacea of Turkestan, p. 15, 



pi. 3, figs. 11-22. 

 1879. Metoponorthus asiaticus, Budde-Lund, Prospectus Isopodum 



terrestrium, p. 4. 

 1885. ,, orientalis {partim ?), Budde-Luiid, Isopoda 



terrcstria, p. 162. 



Uljanin in 1875 describes and figures Porcellio asiaticus and 

 P. orientalis as two quite distinct species, the largest male of the 

 former measuring 14 X 6-5 mm., of the latter 13 X 8 mm. Budde- 

 Lund, without noticing the difference in breadth, unites the two 

 species as merely colour varieties. In his earlier work lie adopts 

 the specific name asiaticus, but in 1885 he makes this a synonym 

 of orientalis, although the other species has precedence both in 

 Uljanin' s text and plates. 



The specimens which I refer to P. asiaticus were obtained by 

 Dr. Annandale at Lucknow, under date 22-i-o8. 



Gen. ExALi^ONiscus, nov. 



Body finely tuberculate, not adapted for congloba.tion. Eyes 

 wanting. Second antennae short, flagellum three- jointed. Mandi- 

 bles with four or five stout teeth divided between the cutting edge 

 and its accessory plate ; adjacent to the latter is a border fringed 

 with spinules and setules, a feathered seta (at least on one of the 

 mandibles) projecting between this border and the brush of setae on 

 a short peduncle which represents the molar. First maxilla with 

 two short feathered setae occupying the apex of the inner plate, 

 the outer plate being surmounted by smooth spines only seven in 

 number, the distal part of its outer margin setulose. The second 

 maxillae with inner apical lobe much broader than the outer and 

 showing a group of adpressed setae, only the tips of which pro- 

 ject from its distal margin. Maxillipeds not very broad, the mas- 

 ticatory plate quadrate, its truncate distal border finely fringed, 

 the palp carrying on the inner margin of its penultimate joint an 

 apically feathered process similar to the somewhat larger terminal 

 joint. The limbs of the per aeon have many spines with multifid 

 apices. The first and second pleopods of the male are in near 

 agreement with those in Alloniscus, Dana (judging by A. pigmen- 

 tatus, Budde-Lund) ; the fifth pair have the gill-cover remarkably 

 acute at the apex. Telsonic segment broad with obtuse apex. 

 Outer ramus of uropods much projecting, longer than the stout 

 peduncle, on the inner border of which the narrow inner ramus is 

 attached, scarcely reaching half the length of the outer ramus. 



In 1908 Budde-Lund, in the account of Allottiscus brevis 

 (Voeltzkow's Reise in Ostafrika, vol. ii, p. 298), incidentally ex- 

 presses the opinion that A. coccus, Dollfus, probably does not belong 

 to the genus Alloniscus, at least in his limitation of it. That view is 



