428 Records of the Indian Museum. [Vol. XXII, 



other, and to a large conical tooth which follows them ; separated 

 from these by a considerable distance is a diminishing series of six 

 medium sized teeth. 



Tetragnatha hasseltii, Thorell. 



Teti'ag>iatha hasseltii, Thorell. i8go, pp. 217-221. 



do. var. birmanica, Thorell, 1895, pp. 142-143 ; iSgS. p. 326. 

 '.' Tetragnatha hasselti, var. birmanica,' Sheriffs, 1919, p. 231. 



Typical form from Celebes ; varietv fromTharrawady, Bhamo. 

 Lateral eyes nearer together than medians. Abdomen relatively 

 short and stout. 



Female. Chelicerae as long as carapace. Dorsal row of ten 

 teeth extending almost throughout their length. First dorsal 

 tooth small and situated a little behind apex, widely separated 

 from large second tooth; second, third and fourth about equal, 

 somewhat widely separated ; remainder diminishing Ventral row 

 somewhat shorter than dorsal, with nine teeth ; first long and 

 somewhat sinuous, situated close to base of fang ; second a little 

 smaller, situated opposite and somewhat larger than second dorsal, 

 remainder diminishing. Varietal form with teeth on either side of 

 fang- groove smaller than in typical form and less space between 

 the first and second teeth, especially in the ventral row, the 

 secoiid ventral tooth thus being in front of, instead of opposite the 

 second dorsal. Fang unarmed in both forms. 



Male known in varietal form only. Chelicerae slenderer than 

 in female. Subapical spine slender and curved. First of dorsal 

 seven teeth stouter than the rest and somewhat curved, nearer 

 to second than are other dorsal teeth to each other. First ol 

 about ten ventral teeth small and nearer to second than second 

 is to third. First tooth of both rows situated at base of fang, the 

 dorsal slightly behind the ventral. 



Tetragnatha irridescens, Stoliczka. 



Tetragnatha irridescens, Stoliczka, i36y, np. 24(1-247, pi. xviii, figs- 



From the neighbourhood of Calcutta. Relatively short spi- 

 ders having the general build of T. hasseltii and T. inackenzici. 

 The two rows of eyes more or less parallel ; laterals widely se- 

 parated. The types of this species, both male and female, are 

 immature as is clearly shown in Stoliczka's figure of the male 

 palpal organ, though his description of it seems to imply matur- 

 ity. Until mature sj)ecimens are obtained from the same locahty 

 it will be impossible to define the species. 



In the collection before me there are two mature males and 

 one possibly mature female, as well as several immature specimens, 



' I suspect that the specimens recorded by Sheriffs from the Madras beach are 

 really T. mackenziei, a species of similar form described below (p. 43S) of which 

 I have specimens from X'illivauUam on the outskirts of Madras. 



